Articles | Volume 15, issue 12
https://doi.org/10.5194/tc-15-5447-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-15-5447-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Dec 2021
Research article |
| 07 Dec 2021
| 07 Dec 2021
Mid-Holocene thinning of David Glacier, Antarctica: chronology and controls
Antarctic Research Centre, Victoria University of Wellington, P.O. Box 600, Wellington, 6140, New Zealand
Andrew Mackintosh
Securing Antarctica's Environmental Future, School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC 3800, Australia
Kevin Norton
School of Geography, Earth and Environmental Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, 6140, New Zealand
Ross Whitmore
Antarctic Research Centre, Victoria University of Wellington, P.O. Box 600, Wellington, 6140, New Zealand
Securing Antarctica's Environmental Future, School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC 3800, Australia
Carlo Baroni
Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria, 53, 56126 Pisa, Italy
Stewart S. R. Jamieson
Department of Geography, Durham University, South Road, Durham, DH1 3LE, UK
Richard S. Jones
Securing Antarctica's Environmental Future, School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC 3800, Australia
Greg Balco
Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA
Maria Cristina Salvatore
Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria, 53, 56126 Pisa, Italy
Stefano Casale
Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria, 53, 56126 Pisa, Italy
Jae Il Lee
Korean Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Korea
Yeong Bae Seong
Department of Geography, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, Korea
Robert McKay
Antarctic Research Centre, Victoria University of Wellington, P.O. Box 600, Wellington, 6140, New Zealand
Lauren J. Vargo
Antarctic Research Centre, Victoria University of Wellington, P.O. Box 600, Wellington, 6140, New Zealand
Daniel Lowry
Antarctic Research Centre, Victoria University of Wellington, P.O. Box 600, Wellington, 6140, New Zealand
GNS Science, 1 Fairway Dr. Avalon, 5010, New Zealand
Perry Spector
Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA
Marcus Christl
Department of Physics, ETH Zürich, Otto-Stern-Weg 5, 8093 Zurich, Switzerland
Susan Ivy Ochs
Department of Physics, ETH Zürich, Otto-Stern-Weg 5, 8093 Zurich, Switzerland
Luigia Di Nicola
Scottish Universities Environmental Research Centre, Scottish Enterprise Technology Park/Rankine Av, Glasgow G75 0QF, United Kingdom
Maria Iarossi
Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria, 53, 56126 Pisa, Italy
Finlay Stuart
Scottish Universities Environmental Research Centre, Scottish Enterprise Technology Park/Rankine Av, Glasgow G75 0QF, United Kingdom
Tom Woodruff
PRIME Lab, Purdue University, 525 Northwestern Avenue, West Lafayette, IN 47907, USA
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This paper presents a new modelling framework that reconstructs the history of rocky shores using cosmogenic nuclide data. The model can be applied to both eroding and stable coasts, and allows users to test how factors like cliff retreat, down-wearing and sea-level change have shaped coastal landscapes. It provides a flexible tool for exploring long-term coastal evolution across diverse environments.
Marie Bergelin, Andrew L. Gorin, Greg Balco, and William S. Cassata
Geochronology, 7, 493–511, https://doi.org/10.5194/gchron-7-493-2025, https://doi.org/10.5194/gchron-7-493-2025, 2025
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Helium gas accumulates over time in minerals, but loss can occur depending on temperature. If partially retained, its loss can potentially be used for determining past surface temperatures. This study uses a model that accounts for complex gas loss to analyze helium retention in two minerals commonly found on the surface of Antarctica. We find one of the minerals retains helium, while the other loses nearly all of the gas within 100 years, making it unsuitable as a climate reconstruction.
Marjolaine Verret, Sebastian Naeher, Denis Lacelle, Catherine Ginnane, Warren Dickinson, Kevin Norton, Jocelyn Turnbull, and Richard Levy
Biogeosciences, 22, 5771–5786, https://doi.org/10.5194/bg-22-5771-2025, https://doi.org/10.5194/bg-22-5771-2025, 2025
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15 million years ago, the McMurdo Dry Valleys of Antarctica were dominated by a tundra environment. In contrast, the modern environment is amongst the coldest and driest on Earth. Using a permafrost core, this paper investigates the shift from a tundra- to a bacteria-dominated landscape. By differentiating between ancient and modern organic material, we further our understanding of preservation of ancient organic material and its response and contribution to future climate change.
Johanna Beckmann, Ronja Reese, Felicity S. McCormack, Sue Cook, Lawrence Bird, Dawid Gwyther, Daniel Richards, Matthias Scheiter, Yu Wang, Hélène Seroussi, Ayako Abe‐Ouchi, Torsten Albrecht, Jorge Alvarez‐Solas, Xylar S. Asay‐Davis, Jean‐Baptiste Barre, Constantijn J. Berends, Jorge Bernales, Javier Blasco, Justine Caillet, David M. Chandler, Violaine Coulon, Richard Cullather, Christophe Dumas, Benjamin K. Galton‐Fenzi, Julius Garbe, Fabien Gillet‐Chaulet, Rupert Gladstone, Heiko Goelzer, Nicholas R. Golledge, Ralf Greve, G. Hilmar Gudmundsson, Holly Kyeore Han, Trevor R. Hillebrand, Matthew J. Hoffman, Philippe Huybrechts, Nicolas C. Jourdain, Ann Kristin Klose, Petra M. Langebroek, Gunter R. Leguy, William H. Lipscomb, Daniel P. Lowry, Pierre Mathiot, Marisa Montoya, Mathieu Morlighem, Sophie Nowicki, Frank Pattyn, Antony J. Payne, Tyler Pelle, Aurélien Quiquet, Alexander Robinson, Leopekka Saraste, Erika G. Simon, Sainan Sun, Jake P. Twarog, Luke D. Trusel, Benoit Urruty, Jonas Van Breedam, Roderik S. W. van de Wal, Chen Zhao, and Thomas Zwinger
EGUsphere, https://doi.org/10.5194/egusphere-2025-4069, https://doi.org/10.5194/egusphere-2025-4069, 2025
This preprint is open for discussion and under review for The Cryosphere (TC).
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Antarctica holds enough ice to raise sea levels by many meters, but its future is uncertain. Warm ocean water melts ice shelves from below, letting inland ice flow faster into the sea. By 2300, Antarctica could add 0.6–4.4 m to sea levels. Our study identifies two key factors—how strongly shelves melt and how the ice responds. These explain much of the range, and refining them in models may improve future predictions.
Matilda Weatherley, Chris R. Stokes, Stewart S. R. Jamieson, Sindhu Ramanath, and Alessandro Silvano
EGUsphere, https://doi.org/10.5194/egusphere-2025-4100, https://doi.org/10.5194/egusphere-2025-4100, 2025
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Parts of the East Antarctic Ice Sheet rest on a bed below sea level, making them vulnerable to ice dynamic changes and instability, but few glaciers have been studied in detail. Here we report on glaciers draining into Porpoise Bay, Wilkes Land, overlying the Aurora Subglacial Basin. We find ice surface thinning, grounding line retreat and ice surface velocity increase over recent decades, consistent with warm ocean waters intrusion. This highlights this region's vulnerability to future warming.
Lukas Rettig, Sandro Rossato, Sarah Kamleitner, Paolo Mozzi, Susan Ivy-Ochs, Enrico Marcato, Marcus Christl, Silvana Martin, and Giovanni Monegato
E&G Quaternary Sci. J., 74, 151–168, https://doi.org/10.5194/egqsj-74-151-2025, https://doi.org/10.5194/egqsj-74-151-2025, 2025
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The work shows detailed reconstructions of the glaciers in the Valsugana area (south-eastern Alps) during the Last Glacial Maximum (LGM) and is supported by robust evidence and new exposure datings. These are the first ages for the internal sector of the south-eastern Alps. Local glaciers not connected with the major ice network were used for the calculation of their equilibrium line altitude. This let us estimate LGM palaeoprecipitation and compare it to Alpine palaeoclimatological models.
Vincent Charnay, Daniel P. Lowry, Elizabeth D. Keller, and Abha Sood
Clim. Past, 21, 1611–1631, https://doi.org/10.5194/cp-21-1611-2025, https://doi.org/10.5194/cp-21-1611-2025, 2025
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Our study evaluates models' ability to simulate Antarctic regional climate features by comparing available Paleoclimate Modelling Intercomparison Project models to sets of Last Millennium Antarctic proxy-based reconstructions most relevant to the surface mass balance. We later look at their implications for 21st-century sea level rise. The best-scoring model predicts a higher surface mass balance by 2100, which implies stronger mitigation of the ice sheet contribution to sea level rise.
Cari Rand, Richard S. Jones, Andrew N. Mackintosh, Brent Goehring, and Kat Lilly
The Cryosphere, 19, 3681–3691, https://doi.org/10.5194/tc-19-3681-2025, https://doi.org/10.5194/tc-19-3681-2025, 2025
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In this study, we determine how recently samples from a mountain in East Antarctica were last covered by the East Antarctic Ice Sheet. By examining concentrations of 14C in rock samples, we determined that all but the summit of the mountain was buried under glacial ice within the last 15 kyr. Other methods of estimating past ice thicknesses are not sensitive enough to capture ice cover this recent, so we were previously unaware that ice at this site was thicker at this time.
Neil Ross, Rebecca J. Sanderson, Bernd Kulessa, Martin Siegert, Guy J. G. Paxman, Keir A. Nichols, Matthew R. Siegfried, Stewart S. R. Jamieson, Michael J. Bentley, Tom A. Jordan, Christine L. Batchelor, David Small, Olaf Eisen, Kate Winter, Robert G. Bingham, S. Louise Callard, Rachel Carr, Christine F. Dow, Helen A. Fricker, Emily Hill, Benjamin H. Hills, Coen Hofstede, Hafeez Jeofry, Felipe Napoleoni, and Wilson Sauthoff
EGUsphere, https://doi.org/10.5194/egusphere-2025-3625, https://doi.org/10.5194/egusphere-2025-3625, 2025
This preprint is open for discussion and under review for The Cryosphere (TC).
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We review previous research into a group of fast-flowing Antarctic ice streams, the Foundation-Patuxent-Academy System. Previously, we knew relatively little how these ice streams flow, how they interact with the ocean, what their geological history was, and how they might evolve in a warming world. By reviewing existing information on these ice streams, we identify the future research needed to determine how they function, and their potential contribution to global sea level rise.
Lawrence A. Bird, Vitaliy Ogarko, Laurent Ailleres, Lachlan Grose, Jérémie Giraud, Felicity S. McCormack, David E. Gwyther, Jason L. Roberts, Richard S. Jones, and Andrew N. Mackintosh
The Cryosphere, 19, 3355–3380, https://doi.org/10.5194/tc-19-3355-2025, https://doi.org/10.5194/tc-19-3355-2025, 2025
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The terrain of the seafloor has important controls on the access of warm water below floating ice shelves around Antarctica. Here, we present an open-source method to infer what the seafloor looks like around the Antarctic continent and within these ice shelf cavities, using measurements of the Earth's gravitational field. We present an improved seafloor map for the Vincennes Bay region in East Antarctica and assess its impact on ice melt rates.
Levan G. Tielidze, Andrew N. Mackintosh, and Weilin Yang
The Cryosphere, 19, 2677–2694, https://doi.org/10.5194/tc-19-2677-2025, https://doi.org/10.5194/tc-19-2677-2025, 2025
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Heard Island is a UNESCO World Heritage site due to its outstanding physical and biological features which are being affected by significant ongoing climatic changes. As one of the only sub-Antarctic islands mostly free of introduced species, its largely undisturbed ecosystems are at risk from the impact of glacier retreat. This glacier inventory will help in designing effective conservation strategies and managing protected areas to ensure the preservation of the biodiversity they support.
Greg Balco
Geochronology, 7, 247–253, https://doi.org/10.5194/gchron-7-247-2025, https://doi.org/10.5194/gchron-7-247-2025, 2025
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Janina Güntzel, Juliane Müller, Ralf Tiedemann, Gesine Mollenhauer, Lester Lembke-Jene, Estella Weigelt, Lasse Schopen, Niklas Wesch, Laura Kattein, Andrew N. Mackintosh, and Johann P. Klages
EGUsphere, https://doi.org/10.5194/egusphere-2025-2515, https://doi.org/10.5194/egusphere-2025-2515, 2025
This preprint is open for discussion and under review for The Cryosphere (TC).
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Combined multi-proxy sediment core analyses reveal the deglaciation along the Mac. Robertson Shelf, a yet insufficiently studied sector of the East Antarctic margin. Grounding line extent towards the continental shelf break prior to ~12.5 cal. ka BP and subsequent episodic mid-shelf retreat towards the early Holocene prevented Antarctic Bottom Water formation in its current form, hence suggesting either its absence or an alternative pre-Holocene formation mechanism.
Marie Bergelin, Greg Balco, and Richard A. Ketcham
EGUsphere, https://doi.org/10.5194/egusphere-2025-3033, https://doi.org/10.5194/egusphere-2025-3033, 2025
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We developed a faster and simpler way to measure helium gas in rocks to determine how long they have been exposed at Earth's surface. Instead of separating minerals within the rocks by hand, our method uses heat to release gas from specific minerals. This reduces time, cost, and physical work, making it easier to collect large amounts of data when studying landscape change or when only small rock samples are available.
Jessica M. A. Macha, Andrew N. Mackintosh, Felicity S. McCormack, Benjamin J. Henley, Helen V. McGregor, Christiaan T. van Dalum, and Ariaan Purich
The Cryosphere, 19, 1915–1935, https://doi.org/10.5194/tc-19-1915-2025, https://doi.org/10.5194/tc-19-1915-2025, 2025
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Extreme El Niño–Southern Oscillation (ENSO) events have global impacts, but their Antarctic impacts are poorly understood. Examining Antarctic snow accumulation anomalies of past observed extreme ENSO events, we show that accumulation changes differ between events and are insignificant during most events. Significant changes occur during 2015/16 and in Enderby Land during all extreme El Niños. Historical data limit conclusions, but future greater extremes could cause Antarctic accumulation changes.
Anna Ruth W. Halberstadt and Greg Balco
EGUsphere, https://doi.org/10.5194/egusphere-2025-2008, https://doi.org/10.5194/egusphere-2025-2008, 2025
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We developed a new framework for testing how well computer models of the Antarctic ice sheet match geological measurements of past ice thinning. By using more data and higher-spatial-resolution modeling, we improve how well models capture complex regions. Our approach also makes it easier to include new data as they become available. We describe multiple metrics for comparing models and data. This can help scientists better understand how the ice sheet changed in the past.
Julia Martin, Ruzica Dadic, Brian Anderson, Roberta Pirazzini, Oliver Wigmore, and Lauren Vargo
EGUsphere, https://doi.org/10.5194/egusphere-2025-1601, https://doi.org/10.5194/egusphere-2025-1601, 2025
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This study examines how snow distribution affects Antarctic sea ice surface temperature, a key factor in its energy balance. Using drone and ground-based data, we mapped snow depth and surface temperature on 2.4 m thick sea ice in McMurdo Sound. We corrected thermal camera inconsistencies and found that surface temperature is more influenced by topography-driven solar radiation than snow depth. Our findings highlight the need to account for small-scale processes in sea ice energy balance models.
Riccardo Cerrato, Maria Cristina Salvatore, Michele Brunetti, Andrea Somma, and Carlo Baroni
Clim. Past, 21, 609–626, https://doi.org/10.5194/cp-21-609-2025, https://doi.org/10.5194/cp-21-609-2025, 2025
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Understanding past climates requires data extending beyond modern instrumental records. This study shows that blue intensity (BI) measurements from European larch trees in the Southern Rhaetian Alps provide a stronger proxy for reconstructing past summer temperatures than traditional tree-ring-width data. BI processing enables regional-scale reconstructions and helps extend these reconstructions to the Mediterranean Basin and northern Europe, with excellent correlations to existing data.
Lawrence A. Bird, Felicity S. McCormack, Johanna Beckmann, Richard S. Jones, and Andrew N. Mackintosh
The Cryosphere, 19, 955–973, https://doi.org/10.5194/tc-19-955-2025, https://doi.org/10.5194/tc-19-955-2025, 2025
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Vanderford Glacier is the fastest-retreating glacier in East Antarctica and may have important implications for future ice loss from the Aurora Subglacial Basin. Our ice sheet model simulations suggest that grounding line retreat is driven by sub-ice-shelf basal melting, in which warm ocean waters melt ice close to the grounding line. We show that current estimates of basal melt are likely too low, highlighting the need for improved estimates and direct measurements of basal melt in the region.
Sangmin Ha, Hee-Cheol Kang, Seongjun Lee, Yeong Bae Seong, Jeong-Heon Choi, Seok-Jin Kim, and Moon Son
Solid Earth, 16, 197–231, https://doi.org/10.5194/se-16-197-2025, https://doi.org/10.5194/se-16-197-2025, 2025
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Unlike episodic plate boundary earthquakes, their randomness makes predicting intraplate earthquakes challenging. This study aids in understanding intraplate earthquake behavior by analyzing paleo-earthquake records of the Yangsan Fault in Korea. Five trench sites revealed six Quaternary earthquakes, the latest 3000 years ago, with Mw 6.7–7.1. The right-lateral fault has a 0.13 mm yr-1 slip rate and a recurrence interval of over 13000 years; it has been continuously active since the Quaternary.
Joanne S. Johnson, John Woodward, Ian Nesbitt, Kate Winter, Seth Campbell, Keir A. Nichols, Ryan A. Venturelli, Scott Braddock, Brent M. Goehring, Brenda Hall, Dylan H. Rood, and Greg Balco
The Cryosphere, 19, 303–324, https://doi.org/10.5194/tc-19-303-2025, https://doi.org/10.5194/tc-19-303-2025, 2025
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Determining where and when the Antarctic ice sheet was smaller than present requires recovery and exposure dating of subglacial bedrock. Here we use ice sheet model outputs and field data (geological and glaciological observations, bedrock samples, and ground-penetrating radar) to assess the suitability for subglacial drilling of sites in the Hudson Mountains, West Antarctica. We find that no sites are perfect, but two are feasible, with the most suitable being Winkie Nunatak (74.86°S, 99.77°W).
Gordon R. M. Bromley, Greg Balco, Margaret S. Jackson, Allie Balter-Kennedy, and Holly Thomas
Clim. Past, 21, 145–160, https://doi.org/10.5194/cp-21-145-2025, https://doi.org/10.5194/cp-21-145-2025, 2025
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We constructed a geologic record of East Antarctic Ice Sheet thickness from deposits at Otway Massif to directly assess how Earth's largest ice sheet responds to warmer-than-present climate. Our record confirms the long-term dominance of a cold polar climate but lacks a clear ice sheet response to the mid-Pliocene Warm Period, a common analogue for the future. Instead, an absence of moraines from the late Miocene–early Pliocene suggests the ice sheet was less extensive than present at that time.
Francesca Baldacchino, Nicholas R. Golledge, Mathieu Morlighem, Huw Horgan, Alanna V. Alevropoulos-Borrill, Alena Malyarenko, Alexandra Gossart, Daniel P. Lowry, and Laurine van Haastrecht
The Cryosphere, 19, 107–127, https://doi.org/10.5194/tc-19-107-2025, https://doi.org/10.5194/tc-19-107-2025, 2025
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Understanding how the Ross Ice Shelf flow is changing in a warming world is important for predicting ice sheet change. Field measurements show clear intra-annual variations in ice flow; however, it is unclear what mechanisms drive this variability. We show that local perturbations in basal melt can have a significant impact on ice flow speed, but a combination of forcings is likely driving the observed variability in ice flow.
Bella J. Duncan, Robert McKay, Richard Levy, Joseph G. Prebble, Timothy Naish, Osamu Seki, Christoph Kraus, Heiko Moossen, G. Todd Ventura, Denise K. Kulhanek, and James Bendle
EGUsphere, https://doi.org/10.5194/egusphere-2024-4021, https://doi.org/10.5194/egusphere-2024-4021, 2025
This preprint is open for discussion and under review for Climate of the Past (CP).
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We use plant wax compound specific stable isotopes to investigate how ancient Antarctic vegetation adapted to glacial conditions 23 million years ago. We find plants became less water efficient to prioritise photosynthesis during short, harsh growing seasons. Ecosystem changes also included enhanced aridity, and a shift to a stunted, low elevation vegetation. This shows the adaptability of ancient Antarctic vegetation under atmospheric CO2 conditions comparable to modern.
Holly Wytiahlowsky, Chris R. Stokes, Rebecca A. Hodge, Caroline C. Clason, and Stewart S. R. Jamieson
EGUsphere, https://doi.org/10.5194/egusphere-2024-3894, https://doi.org/10.5194/egusphere-2024-3894, 2025
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Channels on glaciers are important due to their role in transporting glacial meltwater from glaciers and into downstream river catchments. These channels have received little research in mountain environments. We manually mapped <2000 channels to determine their distribution and characteristics across 285 glaciers in Switzerland. We find that channels are mostly commonly found on large glaciers with lower relief and fewer crevasses. Most channels run off the glacier, but 20 % enter the glacier.
Joseph P. Tulenko, Greg Balco, Michael A. Clynne, and L. J. Patrick Muffler
Geochronology, 6, 639–652, https://doi.org/10.5194/gchron-6-639-2024, https://doi.org/10.5194/gchron-6-639-2024, 2024
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Cosmogenic nuclide exposure dating is an exceptional tool for reconstructing glacier histories, but reconstructions based on common target nuclides (e.g., 10Be) can be costly and time-consuming to generate. Here, we present a cost-effective proof-of-concept 21Ne exposure age chronology from Lassen Volcanic National Park, CA, USA, that broadly agrees with nearby 10Be chronologies but at lower precision.
Greg Balco, Andrew J. Conant, Dallas D. Reilly, Dallin Barton, Chelsea D. Willett, and Brett H. Isselhardt
Geochronology, 6, 571–584, https://doi.org/10.5194/gchron-6-571-2024, https://doi.org/10.5194/gchron-6-571-2024, 2024
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This paper describes how krypton isotopes produced by nuclear fission can be used to determine the age of microscopic particles of used nuclear fuel. This is potentially useful for international safeguard applications aimed at tracking and identifying nuclear materials, as well as geoscience applications involving dating post-1950s sediments or understanding environmental transport of nuclear materials.
Cho-Hee Lee, Yeong Bae Seong, John Weber, Sangmin Ha, Dong-Eun Kim, and Byung Yong Yu
Earth Surf. Dynam., 12, 1091–1120, https://doi.org/10.5194/esurf-12-1091-2024, https://doi.org/10.5194/esurf-12-1091-2024, 2024
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Topographic metrics were used to understand changes due to tectonic activity. We evaluated the relative tectonic activity along the Ulsan Fault Zone (UFZ), one of the most active fault zones in South Korea. We divided the UFZ into five segments, based on the spatial variation in activity. We modeled the landscape evolution of the study area and interpreted tectono-geomorphic history during which the northern part of the UFZ experienced asymmetric uplift, while the southern part did not.
Allie Balter-Kennedy, Joerg M. Schaefer, Greg Balco, Meredith A. Kelly, Michael R. Kaplan, Roseanne Schwartz, Bryan Oakley, Nicolás E. Young, Jean Hanley, and Arianna M. Varuolo-Clarke
Clim. Past, 20, 2167–2190, https://doi.org/10.5194/cp-20-2167-2024, https://doi.org/10.5194/cp-20-2167-2024, 2024
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We date sedimentary deposits showing that the southeastern Laurentide Ice Sheet was at or near its southernmost extent from ~ 26 000 to 21 000 years ago, when sea levels were at their lowest, with climate records indicating glacial conditions. Slow deglaciation began ~ 22 000 years ago, shown by a rise in modeled local summer temperatures, but significant deglaciation in the region did not begin until ~ 18 000 years ago, when atmospheric CO2 began to rise, marking the end of the last ice age.
Samantha E. Bombard, R. Mark Leckie, Imogen M. Browne, Amelia E. Shevenell, Robert M. McKay, David M. Harwood, and the IODP Expedition 374 Scientists
J. Micropalaeontol., 43, 383–421, https://doi.org/10.5194/jm-43-383-2024, https://doi.org/10.5194/jm-43-383-2024, 2024
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The Ross Sea record of the Miocene Climatic Optimum (~16.9–14.7 Ma) and the Middle Miocene Climate Transition (~14.7–13.8 Ma) can provide critical insights into the Antarctic ocean–cryosphere system during an ancient time of extreme warmth and subsequent cooling. Benthic foraminifera inform us about water masses, currents, and glacial conditions in the Ross Sea, and planktic foram invaders can inform us of when warm waters melted the Antarctic Ice Sheet in the past.
Marie Bergelin, Greg Balco, Lee B. Corbett, and Paul R. Bierman
Geochronology, 6, 491–502, https://doi.org/10.5194/gchron-6-491-2024, https://doi.org/10.5194/gchron-6-491-2024, 2024
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Cosmogenic nuclides, such as 10Be, are rare isotopes produced in rocks when exposed at Earth's surface and are valuable for understanding surface processes and landscape evolution. However, 10Be is usually measured in quartz minerals. Here we present advances in efficiently extracting and measuring 10Be in the pyroxene mineral. These measurements expand the use of 10Be as a dating tool for new rock types and provide opportunities to understand landscape processes in areas that lack quartz.
Chinmay Dash, Yeong Bae Seong, Ajay Kumar Singh, Min Kyung Lee, Jae Il Lee, Kyu-Cheul Yoo, Hyun Hee Rhee, and Byung Yong Yu
Clim. Past Discuss., https://doi.org/10.5194/cp-2024-38, https://doi.org/10.5194/cp-2024-38, 2024
Revised manuscript not accepted
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This study explores sediment core RS15-LC47 from the Ross Sea over the past 800,000 years, examining changes in sea-ice dynamics and deposition environments. It integrates various data to reveal shifts related to Circumpolar Deep Water influx and Antarctic currents, particularly during significant climate transitions. Results highlight potential West Antarctic Ice Sheet collapses in warmer periods, offering new insights into the area's paleoclimate and sedimentary processes.
Charlotte M. Carter, Michael J. Bentley, Stewart S. R. Jamieson, Guy J. G. Paxman, Tom A. Jordan, Julien A. Bodart, Neil Ross, and Felipe Napoleoni
The Cryosphere, 18, 2277–2296, https://doi.org/10.5194/tc-18-2277-2024, https://doi.org/10.5194/tc-18-2277-2024, 2024
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We use radio-echo sounding data to investigate the presence of flat surfaces beneath the Evans–Rutford region in West Antarctica. These surfaces may be what remains of laterally continuous surfaces, formed before the inception of the West Antarctic Ice Sheet, and we assess two hypotheses for their formation. Tectonic structures in the region may have also had a control on the growth of the ice sheet by focusing ice flow into troughs adjoining these surfaces.
Edmund J. Lea, Stewart S. R. Jamieson, and Michael J. Bentley
The Cryosphere, 18, 1733–1751, https://doi.org/10.5194/tc-18-1733-2024, https://doi.org/10.5194/tc-18-1733-2024, 2024
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We use the ice surface expression of the Gamburtsev Subglacial Mountains in East Antarctica to map the horizontal pattern of valleys and ridges in finer detail than possible from previous methods. In upland areas, valleys are spaced much less than 5 km apart, with consequences for the distribution of melting at the bed and hence the likelihood of ancient ice being preserved. Automated mapping techniques were tested alongside manual approaches, with a hybrid approach recommended for future work.
Guy J. G. Paxman, Stewart S. R. Jamieson, Aisling M. Dolan, and Michael J. Bentley
The Cryosphere, 18, 1467–1493, https://doi.org/10.5194/tc-18-1467-2024, https://doi.org/10.5194/tc-18-1467-2024, 2024
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This study uses airborne radar data and satellite imagery to map mountainous topography hidden beneath the Greenland Ice Sheet. We find that the landscape records the former extent and configuration of ice masses that were restricted to areas of high topography. Computer models of ice flow indicate that valley glaciers eroded this landscape millions of years ago when local air temperatures were at least 4 °C higher than today and Greenland’s ice volume was < 10 % of that of the modern ice sheet.
Greg Balco, Alan J. Hidy, William T. Struble, and Joshua J. Roering
Geochronology, 6, 71–76, https://doi.org/10.5194/gchron-6-71-2024, https://doi.org/10.5194/gchron-6-71-2024, 2024
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We describe a new method of reconstructing the long-term, pre-observational frequency and/or intensity of wildfires in forested landscapes using trace concentrations of the noble gases helium and neon that are formed in soil mineral grains by cosmic-ray bombardment of the Earth's surface.
Hélène Seroussi, Vincent Verjans, Sophie Nowicki, Antony J. Payne, Heiko Goelzer, William H. Lipscomb, Ayako Abe-Ouchi, Cécile Agosta, Torsten Albrecht, Xylar Asay-Davis, Alice Barthel, Reinhard Calov, Richard Cullather, Christophe Dumas, Benjamin K. Galton-Fenzi, Rupert Gladstone, Nicholas R. Golledge, Jonathan M. Gregory, Ralf Greve, Tore Hattermann, Matthew J. Hoffman, Angelika Humbert, Philippe Huybrechts, Nicolas C. Jourdain, Thomas Kleiner, Eric Larour, Gunter R. Leguy, Daniel P. Lowry, Chistopher M. Little, Mathieu Morlighem, Frank Pattyn, Tyler Pelle, Stephen F. Price, Aurélien Quiquet, Ronja Reese, Nicole-Jeanne Schlegel, Andrew Shepherd, Erika Simon, Robin S. Smith, Fiammetta Straneo, Sainan Sun, Luke D. Trusel, Jonas Van Breedam, Peter Van Katwyk, Roderik S. W. van de Wal, Ricarda Winkelmann, Chen Zhao, Tong Zhang, and Thomas Zwinger
The Cryosphere, 17, 5197–5217, https://doi.org/10.5194/tc-17-5197-2023, https://doi.org/10.5194/tc-17-5197-2023, 2023
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Mass loss from Antarctica is a key contributor to sea level rise over the 21st century, and the associated uncertainty dominates sea level projections. We highlight here the Antarctic glaciers showing the largest changes and quantify the main sources of uncertainty in their future evolution using an ensemble of ice flow models. We show that on top of Pine Island and Thwaites glaciers, Totten and Moscow University glaciers show rapid changes and a strong sensitivity to warmer ocean conditions.
Felicity S. McCormack, Jason L. Roberts, Bernd Kulessa, Alan Aitken, Christine F. Dow, Lawrence Bird, Benjamin K. Galton-Fenzi, Katharina Hochmuth, Richard S. Jones, Andrew N. Mackintosh, and Koi McArthur
The Cryosphere, 17, 4549–4569, https://doi.org/10.5194/tc-17-4549-2023, https://doi.org/10.5194/tc-17-4549-2023, 2023
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Changes in Antarctic surface elevation can cause changes in ice and basal water flow, impacting how much ice enters the ocean. We find that ice and basal water flow could divert from the Totten to the Vanderford Glacier, East Antarctica, under only small changes in the surface elevation, with implications for estimates of ice loss from this region. Further studies are needed to determine when this could occur and if similar diversions could occur elsewhere in Antarctica due to climate change.
Catharina Dieleman, Philip Deline, Susan Ivy Ochs, Patricia Hug, Jordan Aaron, Marcus Christl, and Naki Akçar
EGUsphere, https://doi.org/10.5194/egusphere-2023-1873, https://doi.org/10.5194/egusphere-2023-1873, 2023
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Valleys in the Alps are shaped by glaciers, rivers, mass movements, and slope processes. An understanding of such processes is of great importance in hazard mitigation. We focused on the evolution of the Frébouge cone, which is composed of glacial, debris flow, rock avalanche, and snow avalanche deposits. Debris flows started to form the cone prior to ca. 2 ka ago. In addition, the cone was overrun by a 10 Mm3 large rock avalanche at 1.3 ± 0.1 ka and by the Frébouge glacier at 300 ± 40 a.
Hannah J. Picton, Chris R. Stokes, Stewart S. R. Jamieson, Dana Floricioiu, and Lukas Krieger
The Cryosphere, 17, 3593–3616, https://doi.org/10.5194/tc-17-3593-2023, https://doi.org/10.5194/tc-17-3593-2023, 2023
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This study provides an overview of recent ice dynamics within Vincennes Bay, Wilkes Land, East Antarctica. This region was recently discovered to be vulnerable to intrusions of warm water capable of driving basal melt. Our results show extensive grounding-line retreat at Vanderford Glacier, estimated at 18.6 km between 1996 and 2020. This supports the notion that the warm water is able to access deep cavities below the Vanderford Ice Shelf, potentially making Vanderford Glacier unstable.
Benoit S. Lecavalier, Lev Tarasov, Greg Balco, Perry Spector, Claus-Dieter Hillenbrand, Christo Buizert, Catherine Ritz, Marion Leduc-Leballeur, Robert Mulvaney, Pippa L. Whitehouse, Michael J. Bentley, and Jonathan Bamber
Earth Syst. Sci. Data, 15, 3573–3596, https://doi.org/10.5194/essd-15-3573-2023, https://doi.org/10.5194/essd-15-3573-2023, 2023
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The Antarctic Ice Sheet Evolution constraint database version 2 (AntICE2) consists of a large variety of observations that constrain the evolution of the Antarctic Ice Sheet over the last glacial cycle. This includes observations of past ice sheet extent, past ice thickness, past relative sea level, borehole temperature profiles, and present-day bedrock displacement rates. The database is intended to improve our understanding of past Antarctic changes and for ice sheet model calibrations.
Allie Balter-Kennedy, Joerg M. Schaefer, Roseanne Schwartz, Jennifer L. Lamp, Laura Penrose, Jennifer Middleton, Jean Hanley, Bouchaïb Tibari, Pierre-Henri Blard, Gisela Winckler, Alan J. Hidy, and Greg Balco
Geochronology, 5, 301–321, https://doi.org/10.5194/gchron-5-301-2023, https://doi.org/10.5194/gchron-5-301-2023, 2023
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Cosmogenic nuclides like 10Be are rare isotopes created in rocks exposed at the Earth’s surface and can be used to understand glacier histories and landscape evolution. 10Be is usually measured in the mineral quartz. Here, we show that 10Be can be reliably measured in the mineral pyroxene. We use the measurements to determine exposure ages and understand landscape processes in rocks from Antarctica that do not have quartz, expanding the use of this method to new rock types.
Purevmaa Khandsuren, Yeong Bae Seong, Hyun Hee Rhee, Cho-Hee Lee, Mehmet Akif Sarikaya, Jeong-Sik Oh, Khadbaatar Sandag, and Byung Yong Yu
The Cryosphere, 17, 2409–2435, https://doi.org/10.5194/tc-17-2409-2023, https://doi.org/10.5194/tc-17-2409-2023, 2023
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Moraine is an awe-inspiring landscape in alpine areas and stores information on past climate. We measured the timing of moraine formation on the Ih Bogd Massif, southern Mongolia. Here, glaciers move synchronously as a response to changing climate; however, our glacier on the northern slope reached its maximum extent 3 millennia after the southern one. We ran a 2D ice surface model and found that the diachronous behavior of glaciers was real. Aspect also controls the mass of alpine glaciers.
Giulia Sinnl, Florian Adolphi, Marcus Christl, Kees C. Welten, Thomas Woodruff, Marc Caffee, Anders Svensson, Raimund Muscheler, and Sune Olander Rasmussen
Clim. Past, 19, 1153–1175, https://doi.org/10.5194/cp-19-1153-2023, https://doi.org/10.5194/cp-19-1153-2023, 2023
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The record of past climate is preserved by several archives from different regions, such as ice cores from Greenland or Antarctica or speleothems from caves such as the Hulu Cave in China. In this study, these archives are aligned by taking advantage of the globally synchronous production of cosmogenic radionuclides. This produces a new perspective on the global climate in the period between 20 000 and 25 000 years ago.
Michael J. Bentley, James A. Smith, Stewart S. R. Jamieson, Margaret R. Lindeman, Brice R. Rea, Angelika Humbert, Timothy P. Lane, Christopher M. Darvill, Jeremy M. Lloyd, Fiamma Straneo, Veit Helm, and David H. Roberts
The Cryosphere, 17, 1821–1837, https://doi.org/10.5194/tc-17-1821-2023, https://doi.org/10.5194/tc-17-1821-2023, 2023
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The Northeast Greenland Ice Stream is a major outlet of the Greenland Ice Sheet. Some of its outlet glaciers and ice shelves have been breaking up and retreating, with inflows of warm ocean water identified as the likely reason. Here we report direct measurements of warm ocean water in an unusual lake that is connected to the ocean beneath the ice shelf in front of the 79° N Glacier. This glacier has not yet shown much retreat, but the presence of warm water makes future retreat more likely.
Greg Balco, Nathan Brown, Keir Nichols, Ryan A. Venturelli, Jonathan Adams, Scott Braddock, Seth Campbell, Brent Goehring, Joanne S. Johnson, Dylan H. Rood, Klaus Wilcken, Brenda Hall, and John Woodward
The Cryosphere, 17, 1787–1801, https://doi.org/10.5194/tc-17-1787-2023, https://doi.org/10.5194/tc-17-1787-2023, 2023
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Samples of bedrock recovered from below the West Antarctic Ice Sheet show that part of the ice sheet was thinner several thousand years ago than it is now and subsequently thickened. This is important because of concern that present ice thinning in this region may lead to rapid, irreversible sea level rise. The past episode of thinning at this site that took place in a similar, although not identical, climate was not irreversible; however, reversal required at least 3000 years to complete.
Anna Ruth W. Halberstadt, Greg Balco, Hannah Buchband, and Perry Spector
The Cryosphere, 17, 1623–1643, https://doi.org/10.5194/tc-17-1623-2023, https://doi.org/10.5194/tc-17-1623-2023, 2023
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This paper explores the use of multimillion-year exposure ages from Antarctic bedrock outcrops to benchmark ice sheet model predictions and thereby infer ice sheet sensitivity to warm climates. We describe a new approach for model–data comparison, highlight an example where observational data are used to distinguish end-member models, and provide guidance for targeted sampling around Antarctica that can improve understanding of ice sheet response to climate warming in the past and future.
James A. Smith, Louise Callard, Michael J. Bentley, Stewart S. R. Jamieson, Maria Luisa Sánchez-Montes, Timothy P. Lane, Jeremy M. Lloyd, Erin L. McClymont, Christopher M. Darvill, Brice R. Rea, Colm O'Cofaigh, Pauline Gulliver, Werner Ehrmann, Richard S. Jones, and David H. Roberts
The Cryosphere, 17, 1247–1270, https://doi.org/10.5194/tc-17-1247-2023, https://doi.org/10.5194/tc-17-1247-2023, 2023
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The Greenland Ice Sheet is melting at an accelerating rate. To understand the significance of these changes we reconstruct the history of one of its fringing ice shelves, known as 79° N ice shelf. We show that the ice shelf disappeared 8500 years ago, following a period of enhanced warming. An important implication of our study is that 79° N ice shelf is susceptible to collapse when atmospheric and ocean temperatures are ~2°C warmer than present, which could occur by the middle of this century.
Bertie W. J. Miles, Chris R. Stokes, Adrian Jenkins, Jim R. Jordan, Stewart S. R. Jamieson, and G. Hilmar Gudmundsson
The Cryosphere, 17, 445–456, https://doi.org/10.5194/tc-17-445-2023, https://doi.org/10.5194/tc-17-445-2023, 2023
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Satellite observations have shown that the Shirase Glacier catchment in East Antarctica has been gaining mass over the past 2 decades, a trend largely attributed to increased snowfall. Our multi-decadal observations of Shirase Glacier show that ocean forcing has also contributed to some of this recent mass gain. This has been caused by strengthening easterly winds reducing the inflow of warm water underneath the Shirase ice tongue, causing the glacier to slow down and thicken.
Jonathan R. Adams, Joanne S. Johnson, Stephen J. Roberts, Philippa J. Mason, Keir A. Nichols, Ryan A. Venturelli, Klaus Wilcken, Greg Balco, Brent Goehring, Brenda Hall, John Woodward, and Dylan H. Rood
The Cryosphere, 16, 4887–4905, https://doi.org/10.5194/tc-16-4887-2022, https://doi.org/10.5194/tc-16-4887-2022, 2022
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Glaciers in West Antarctica are experiencing significant ice loss. Geological data provide historical context for ongoing ice loss in West Antarctica, including constraints on likely future ice sheet behaviour in response to climatic warming. We present evidence from rare isotopes measured in rocks collected from an outcrop next to Pope Glacier. These data suggest that Pope Glacier thinned faster and sooner after the last ice age than previously thought.
Natacha Gribenski, Marissa M. Tremblay, Pierre G. Valla, Greg Balco, Benny Guralnik, and David L. Shuster
Geochronology, 4, 641–663, https://doi.org/10.5194/gchron-4-641-2022, https://doi.org/10.5194/gchron-4-641-2022, 2022
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We apply quartz 3He paleothermometry along two deglaciation profiles in the European Alps to reconstruct temperature evolution since the Last Glacial Maximum. We observe a 3He thermal signal clearly colder than today in all bedrock surface samples exposed prior the Holocene. Current uncertainties in 3He diffusion kinetics do not permit distinguishing if this signal results from Late Pleistocene ambient temperature changes or from recent ground temperature variation due to permafrost degradation.
Dominic Saunderson, Andrew Mackintosh, Felicity McCormack, Richard Selwyn Jones, and Ghislain Picard
The Cryosphere, 16, 4553–4569, https://doi.org/10.5194/tc-16-4553-2022, https://doi.org/10.5194/tc-16-4553-2022, 2022
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We investigate the variability in surface melt on the Shackleton Ice Shelf in East Antarctica over the last 2 decades (2003–2021). Using daily satellite observations and the machine learning approach of a self-organising map, we identify nine distinct spatial patterns of melt. These patterns allow comparisons of melt within and across melt seasons and highlight the importance of both air temperatures and local controls such as topography, katabatic winds, and albedo in driving surface melt.
Marie Bergelin, Jaakko Putkonen, Greg Balco, Daniel Morgan, Lee B. Corbett, and Paul R. Bierman
The Cryosphere, 16, 2793–2817, https://doi.org/10.5194/tc-16-2793-2022, https://doi.org/10.5194/tc-16-2793-2022, 2022
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Glacier ice contains information on past climate and can help us understand how the world changes through time. We have found and sampled a buried ice mass in Antarctica that is much older than most ice on Earth and difficult to date. Therefore, we developed a new dating application which showed the ice to be 3 million years old. Our new dating solution will potentially help to date other ancient ice masses since such old glacial ice could yield data on past environmental conditions on Earth.
Mae Kate Campbell, Paul R. Bierman, Amanda H. Schmidt, Rita Sibello Hernández, Alejandro García-Moya, Lee B. Corbett, Alan J. Hidy, Héctor Cartas Águila, Aniel Guillén Arruebarrena, Greg Balco, David Dethier, and Marc Caffee
Geochronology, 4, 435–453, https://doi.org/10.5194/gchron-4-435-2022, https://doi.org/10.5194/gchron-4-435-2022, 2022
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We used cosmogenic radionuclides in detrital river sediment to measure erosion rates of watersheds in central Cuba; erosion rates are lower than rock dissolution rates in lowland watersheds. Data from two different cosmogenic nuclides suggest that some basins may have a mixed layer deeper than is typically modeled and could have experienced significant burial after or during exposure. We conclude that significant mass loss may occur at depth through chemical weathering processes.
Zhiang Xie, Dietmar Dommenget, Felicity S. McCormack, and Andrew N. Mackintosh
Geosci. Model Dev., 15, 3691–3719, https://doi.org/10.5194/gmd-15-3691-2022, https://doi.org/10.5194/gmd-15-3691-2022, 2022
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Paleoclimate research requires better numerical model tools to explore interactions among the cryosphere, atmosphere, ocean and land surface. To explore those interactions, this study offers a tool, the GREB-ISM, which can be run for 2 million model years within 1 month on a personal computer. A series of experiments show that the GREB-ISM is able to reproduce the modern ice sheet distribution as well as classic climate oscillation features under paleoclimate conditions.
Joanne S. Johnson, Ryan A. Venturelli, Greg Balco, Claire S. Allen, Scott Braddock, Seth Campbell, Brent M. Goehring, Brenda L. Hall, Peter D. Neff, Keir A. Nichols, Dylan H. Rood, Elizabeth R. Thomas, and John Woodward
The Cryosphere, 16, 1543–1562, https://doi.org/10.5194/tc-16-1543-2022, https://doi.org/10.5194/tc-16-1543-2022, 2022
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Recent studies have suggested that some portions of the Antarctic Ice Sheet were less extensive than present in the last few thousand years. We discuss how past ice loss and regrowth during this time would leave its mark on geological and glaciological records and suggest ways in which future studies could detect such changes. Determining timing of ice loss and gain around Antarctica and conditions under which they occurred is critical for preparing for future climate-warming-induced changes.
Erin L. McClymont, Michael J. Bentley, Dominic A. Hodgson, Charlotte L. Spencer-Jones, Thomas Wardley, Martin D. West, Ian W. Croudace, Sonja Berg, Darren R. Gröcke, Gerhard Kuhn, Stewart S. R. Jamieson, Louise Sime, and Richard A. Phillips
Clim. Past, 18, 381–403, https://doi.org/10.5194/cp-18-381-2022, https://doi.org/10.5194/cp-18-381-2022, 2022
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Sea ice is important for our climate system and for the unique ecosystems it supports. We present a novel way to understand past Antarctic sea-ice ecosystems: using the regurgitated stomach contents of snow petrels, which nest above the ice sheet but feed in the sea ice. During a time when sea ice was more extensive than today (24 000–30 000 years ago), we show that snow petrel diet had varying contributions of fish and krill, which we interpret to show changing sea-ice distribution.
Molly O. Patterson, Richard H. Levy, Denise K. Kulhanek, Tina van de Flierdt, Huw Horgan, Gavin B. Dunbar, Timothy R. Naish, Jeanine Ash, Alex Pyne, Darcy Mandeno, Paul Winberry, David M. Harwood, Fabio Florindo, Francisco J. Jimenez-Espejo, Andreas Läufer, Kyu-Cheul Yoo, Osamu Seki, Paolo Stocchi, Johann P. Klages, Jae Il Lee, Florence Colleoni, Yusuke Suganuma, Edward Gasson, Christian Ohneiser, José-Abel Flores, David Try, Rachel Kirkman, Daleen Koch, and the SWAIS 2C Science Team
Sci. Dril., 30, 101–112, https://doi.org/10.5194/sd-30-101-2022, https://doi.org/10.5194/sd-30-101-2022, 2022
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How much of the West Antarctic Ice Sheet will melt and how quickly it will happen when average global temperatures exceed 2 °C is currently unknown. Given the far-reaching and international consequences of Antarctica’s future contribution to global sea level rise, the SWAIS 2C Project was developed in order to better forecast the size and timing of future changes.
Rachel K. Smedley, David Small, Richard S. Jones, Stephen Brough, Jennifer Bradley, and Geraint T. H. Jenkins
Geochronology, 3, 525–543, https://doi.org/10.5194/gchron-3-525-2021, https://doi.org/10.5194/gchron-3-525-2021, 2021
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We apply new rock luminescence techniques to a well-constrained scenario of the Beinn Alligin rock avalanche, NW Scotland. We measure accurate erosion rates consistent with independently derived rates and reveal a transient state of erosion over the last ~4000 years in the wet, temperate climate of NW Scotland. This study shows that the new luminescence erosion-meter has huge potential for inferring erosion rates on sub-millennial scales, which is currently impossible with existing techniques.
Martim Mas e Braga, Richard Selwyn Jones, Jennifer C. H. Newall, Irina Rogozhina, Jane L. Andersen, Nathaniel A. Lifton, and Arjen P. Stroeven
The Cryosphere, 15, 4929–4947, https://doi.org/10.5194/tc-15-4929-2021, https://doi.org/10.5194/tc-15-4929-2021, 2021
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Mountains higher than the ice surface are sampled to know when the ice reached the sampled elevation, which can be used to guide numerical models. This is important to understand how much ice will be lost by ice sheets in the future. We use a simple model to understand how ice flow around mountains affects the ice surface topography and show how much this influences results from field samples. We also show that models need a finer resolution over mountainous areas to better match field samples.
Frida S. Hoem, Luis Valero, Dimitris Evangelinos, Carlota Escutia, Bella Duncan, Robert M. McKay, Henk Brinkhuis, Francesca Sangiorgi, and Peter K. Bijl
Clim. Past, 17, 1423–1442, https://doi.org/10.5194/cp-17-1423-2021, https://doi.org/10.5194/cp-17-1423-2021, 2021
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We present new offshore palaeoceanographic reconstructions for the Oligocene (33.7–24.4 Ma) in the Ross Sea, Antarctica. Our study of dinoflagellate cysts and lipid biomarkers indicates warm-temperate sea surface conditions. We posit that warm surface-ocean conditions near the continental shelf during the Oligocene promoted increased precipitation and heat delivery towards Antarctica that led to dynamic terrestrial ice sheet volumes in the warmer climate state of the Oligocene.
Dominik Amschwand, Susan Ivy-Ochs, Marcel Frehner, Olivia Steinemann, Marcus Christl, and Christof Vockenhuber
The Cryosphere, 15, 2057–2081, https://doi.org/10.5194/tc-15-2057-2021, https://doi.org/10.5194/tc-15-2057-2021, 2021
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We reconstruct the Holocene history of the Bleis Marscha rock glacier (eastern Swiss Alps) by determining the surface residence time of boulders via their exposure to cosmic rays. We find that this stack of lobes formed in three phases over the last ~9000 years, controlled by the regional climate. This work adds to our understanding of how these permafrost landforms reacted in the past to climate oscillations and helps to put the current behavior of rock glaciers in a long-term perspective.
Bertie W. J. Miles, Jim R. Jordan, Chris R. Stokes, Stewart S. R. Jamieson, G. Hilmar Gudmundsson, and Adrian Jenkins
The Cryosphere, 15, 663–676, https://doi.org/10.5194/tc-15-663-2021, https://doi.org/10.5194/tc-15-663-2021, 2021
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We provide a historical overview of changes in Denman Glacier's flow speed, structure and calving events since the 1960s. Based on these observations, we perform a series of numerical modelling experiments to determine the likely cause of Denman's acceleration since the 1970s. We show that grounding line retreat, ice shelf thinning and the detachment of Denman's ice tongue from a pinning point are the most likely causes of the observed acceleration.
Greg Balco, Benjamin D. DeJong, John C. Ridge, Paul R. Bierman, and Dylan H. Rood
Geochronology, 3, 1–33, https://doi.org/10.5194/gchron-3-1-2021, https://doi.org/10.5194/gchron-3-1-2021, 2021
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The North American Varve Chronology (NAVC) is a sequence of 5659 annual sedimentary layers that were deposited in proglacial lakes adjacent to the retreating Laurentide Ice Sheet ca. 12 500–18 200 years ago. We attempt to synchronize this record with Greenland ice core and other climate records that cover the same time period by detecting variations in global fallout of atmospherically produced beryllium-10 in NAVC sediments.
Kate E. Ashley, Robert McKay, Johan Etourneau, Francisco J. Jimenez-Espejo, Alan Condron, Anna Albot, Xavier Crosta, Christina Riesselman, Osamu Seki, Guillaume Massé, Nicholas R. Golledge, Edward Gasson, Daniel P. Lowry, Nicholas E. Barrand, Katelyn Johnson, Nancy Bertler, Carlota Escutia, Robert Dunbar, and James A. Bendle
Clim. Past, 17, 1–19, https://doi.org/10.5194/cp-17-1-2021, https://doi.org/10.5194/cp-17-1-2021, 2021
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We present a multi-proxy record of Holocene glacial meltwater input, sediment transport, and sea-ice variability off East Antarctica. Our record shows that a rapid Antarctic sea-ice increase during the mid-Holocene (~ 4.5 ka) occurred against a backdrop of increasing glacial meltwater input and gradual climate warming. We suggest that mid-Holocene ice shelf cavity expansion led to cooling of surface waters and sea-ice growth, which slowed basal ice shelf melting.
Travis Clow, Jane K. Willenbring, Mirjam Schaller, Joel D. Blum, Marcus Christl, Peter W. Kubik, and Friedhelm von Blanckenburg
Geochronology, 2, 411–423, https://doi.org/10.5194/gchron-2-411-2020, https://doi.org/10.5194/gchron-2-411-2020, 2020
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Meteoric beryllium-10 concentrations in soil profiles have great capacity to quantify Earth surface processes, such as erosion rates and landform ages. However, determining these requires an accurate estimate of the delivery rate of this isotope to local sites. Here, we present a new method to constrain the long-term delivery rate to an eroding western US site, compare it against existing delivery rate estimates (revealing considerable disagreement between methods), and suggest best practices.
Felipe Napoleoni, Stewart S. R. Jamieson, Neil Ross, Michael J. Bentley, Andrés Rivera, Andrew M. Smith, Martin J. Siegert, Guy J. G. Paxman, Guisella Gacitúa, José A. Uribe, Rodrigo Zamora, Alex M. Brisbourne, and David G. Vaughan
The Cryosphere, 14, 4507–4524, https://doi.org/10.5194/tc-14-4507-2020, https://doi.org/10.5194/tc-14-4507-2020, 2020
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Subglacial water is important for ice sheet dynamics and stability. Despite this, there is a lack of detailed subglacial-water characterisation in West Antarctica (WA). We report 33 new subglacial lakes. Additionally, a new digital elevation model of basal topography was built and used to simulate the subglacial hydrological network in WA. The simulated subglacial hydrological catchments of Pine Island and Thwaites glaciers do not match precisely with their ice surface catchments.
Jennifer F. Arthur, Chris R. Stokes, Stewart S. R. Jamieson, J. Rachel Carr, and Amber A. Leeson
The Cryosphere, 14, 4103–4120, https://doi.org/10.5194/tc-14-4103-2020, https://doi.org/10.5194/tc-14-4103-2020, 2020
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Surface meltwater lakes can flex and fracture ice shelves, potentially leading to ice shelf break-up. A long-term record of lake evolution on Shackleton Ice Shelf is produced using optical satellite imagery and compared to surface air temperature and modelled surface melt. The results reveal that lake clustering on the ice shelf is linked to melt-enhancing feedbacks. Peaks in total lake area and volume closely correspond with intense snowmelt events rather than with warmer seasonal temperatures.
Cited articles
Anderson, B. M., Hindmarsh, R. C., and Lawson, W. J.: A modelling study of the
response of Hatherton Glacier to Ross Ice Sheet grounding line retreat,
Global Planet. Change, 42, 143–153,
https://doi.org/10.1016/j.gloplacha.2003.11.006, 2004. a
Anderson, J. B., Conway, H., Bart, P. J., Witus, A. E., Greenwood, S. L.,
McKay, R. M., Hall, B. L., Ackert, R. P., Licht, K., Jakobsson, M., and
Stone, J. O.: Ross Sea paleo-ice sheet drainage and deglacial history during
and since the LGM, Quaternary Sci. Rev., 100, 31–54,
https://doi.org/10.1016/j.quascirev.2013.08.020, 2014. a, b, c, d, e, f
Andrews, J. T., Domack, E. W., Cunningham, W. L., Leventer, A., Licht, K. J.,
Jull, A. J. T., DeMaster, D. J., and Jennings, A. E.: Problems and Possible
Solutions Concerning Radiocarbon Dating of Surface Marine Sediments, Ross
Sea, Antarctica, Quaternary Res., 52, 206–216,
https://doi.org/10.1006/qres.1999.2047, 1999. a
Argus, D. F., Peltier, W. R., Drummond, R., and Moore, A. W.: The Antarctica
component of postglacial rebound model ICE-6G_C (VM5a) based on GPS
positioning, exposure age dating of ice thicknesses, and relative sea level
histories, Geophys. J. Int., 198, 537–563,
https://doi.org/10.1093/gji/ggu140, 2014. a, b, c
Arndt, J. E., Schenke, H. W., Jakobsson, M., Nitsche, F. O., Buys, G., Goleby,
B., Rebesco, M., Bohoyo, F., Hong, J., Black, J., Greku, R., Udintsev, G.,
Barrios, F., Reynoso-Peralta, W., Taisei, M., and Wigley, R.: The
International Bathymetric Chart of the Southern Ocean (IBCSO) Version 1.0-A
new bathymetric compilation covering circum-Antarctic waters, Geophys.
Res. Lett., 40, 3111–3117, https://doi.org/10.1002/grl.50413, 2013. a, b, c, d
Arthern, R. J., Winebrenner, D. P., and Vaughan, D. G.: Antarctic snow
accumulation mapped using polarization of 4.3-cm wavelength microwave
emission, J. Geophys. Res.-Atmos., 111, D06107,
https://doi.org/10.1029/2004JD005667, 2006. a
Atkins, C. B.: Geomorphological evidence of cold-based glacier activity in
South Victoria Land, Antarctica, Geological Society, London, Special
Publications, 381, 299–318, https://doi.org/10.1144/SP381.18, 2013. a, b
Balco, G.: Contributions and unrealized potential contributions of
cosmogenic-nuclide exposure dating to glacier chronology, 1990–2010,
Quaternary Sci. Rev., 30, 3–27, https://doi.org/10.1016/j.quascirev.2010.11.003,
2011. a, b
Balco, G.: Technical note: A prototype transparent-middle-layer data
management and analysis infrastructure for cosmogenic-nuclide exposure
dating, Geochronology, 2, 169–175, https://doi.org/10.5194/gchron-2-169-2020, 2020. a
Balco, G., Stone, J. O., Lifton, N. A., and Dunai, T. J.: A complete and
easily accessible means of calculating surface exposure ages or erosion rates
from 10Be and 26Al measurements, Quat. Geochronol., 3, 174–195,
https://doi.org/10.1016/J.QUAGEO.2007.12.001, 2008. a, b
Balter-Kennedy, A., Bromley, G., Balco, G., Thomas, H., and Jackson, M. S.: A 14.5-million-year record of East Antarctic Ice Sheet fluctuations from the central Transantarctic Mountains, constrained with cosmogenic 3He, 10Be, 21Ne, and 26Al, The Cryosphere, 14, 2647–2672, https://doi.org/10.5194/tc-14-2647-2020, 2020. a
Barletta, V. R., Bevis, M., Smith, B. E., Wilson, T., Brown, A., Bordoni, A.,
Willis, M., Khan, S. A., Rovira-Navarro, M., Dalziel, I., Smalley, R.,
Kendrick, E., Konfal, S., Caccamise, D. J., Aster, R. C., Nyblade, A., and
Wiens, D. A.: Observed rapid bedrock uplift in Amundsen Sea Embayment
promotes ice-sheet stability., Science, 360, 1335–1339,
https://doi.org/10.1126/science.aao1447, 2018. a
Baroni, C. and Hall, B. L.: A new Holocene relative sea-level curve for Terra
Nova Bay, Victoria Land, Antarctica, J. Quaternary Sci., 19,
377–396, https://doi.org/10.1002/jqs.825, 2004. a, b, c
Baroni, C., Frezzotti, M., Salvatore, M. C., Meneghel, M., Tabacco, I. E.,
Vittuari, L., Bondesan, A., Biasini, A., Cimbelli, A., and Orombelli, G.:
Antarctic geomorphological and glaciological 1 : 250 000 map series: Mount
Murchison quadrangle, northern Victoria Land. Explanatory notes, Ann.
Glaciol., 39, 256–264, https://doi.org/10.3189/172756404781814131, 2004. a, b, c
Bentley, M., Hein, A., Sugden, D., Whitehouse, P., Shanks, R., Xu, S., and
Freeman, S.: Deglacial history of the Pensacola Mountains, Antarctica from
glacial geomorphology and cosmogenic nuclide surface exposure dating,
Quaternary Sci. Rev., 158, 58–76,
https://doi.org/10.1016/j.quascirev.2016.09.028, 2017. a
Bentley, M. J., O Cofaigh, C., Anderson, J. B., Conway, H., Davies, B., Graham,
A. G., Hillenbrand, C.-D., Hodgson, D. A., Jamieson, S. S., Larter, R. D.,
Mackintosh, A., Smith, J. A., Verleyen, E., Ackert, R. P., Bart, P. J., Berg,
S., Brunstein, D., Canals, M., Colhoun, E. A., Crosta, X., Dickens, W. A.,
Domack, E., Dowdeswell, J. A., Dunbar, R., Ehrmann, W., Evans, J., Favier,
V., Fink, D., Fogwill, C. J., Glasser, N. F., Gohl, K., Golledge, N. R.,
Goodwin, I., Gore, D. B., Greenwood, S. L., Hall, B. L., Hall, K., Hedding,
D. W., Hein, A. S., Hocking, E. P., Jakobsson, M., Johnson, J. S., Jomelli,
V., Jones, R. S., Klages, J. P., Kristoffersen, Y., Kuhn, G., Leventer, A.,
Licht, K., Lilly, K., Lindow, J., Livingstone, S. J., Massé, G.,
McGlone, M. S., McKay, R. M., Melles, M., Miura, H., Mulvaney, R., Nel, W.,
Nitsche, F. O., O'Brien, P. E., Post, A. L., Roberts, S. J., Saunders, K. M.,
Selkirk, P. M., Simms, A. R., Spiegel, C., Stolldorf, T. D., Sugden, D. E.,
van der Putten, N., van Ommen, T., Verfaillie, D., Vyverman, W., Wagner, B.,
White, D. A., Witus, A. E., and Zwartz, D.: A community-based geological
reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial
Maximum, Quaternary Sci. Rev., 100, 1–9,
https://doi.org/10.1016/j.quascirev.2014.06.025, 2014. a, b
Bindschadler, R., Vornberger, P., Fleming, A., Fox, A., Mullins, J., Binnie,
D., Paulsen, S., Granneman, B., and Gorodetsky, D.: The Landsat Image Mosaic
of Antarctica, Remote Sens. Environ., 112, 4214–4226,
https://doi.org/10.1016/j.rse.2008.07.006, 2008. a, b, c, d
Bingham, R. G., Ferraccioli, F., King, E. C., Larter, R. D., Pritchard, H. D.,
Smith, A. M., and Vaughan, D. G.: Inland thinning of West Antarctic Ice
Sheet steered along subglacial rifts, Nature, 487, 468–471,
https://doi.org/10.1038/nature11292, 2012. a
Blard, P.-H., Balco, G., Burnard, P., Farley, K., Fenton, C., Friedrich, R.,
Jull, A., Niedermann, S., Pik, R., Schaefer, J., Scott, E., Shuster, D.,
Stuart, F., Stute, M., Tibari, B., Winckler, G., and Zimmermann, L.: An
inter-laboratory comparison of cosmogenic 3He and radiogenic 4He in the
CRONUS-P pyroxene standard, Quat. Geochronol., 26, 11–19,
https://doi.org/10.1016/j.quageo.2014.08.004, 2015. a
Bockheim, J. G., Wilson, S. C., Denton, G. H., Andersen, B. G. B. G., and
Stuiver, M.: Late Quaternary ice-surface fluctuations of Hatherton Glacier,
Transantarctic Mountains, Quaternary Res., 31, 229–254,
https://doi.org/10.1016/0033-5894(89)90007-0, 1989. a, b
Bromley, G. R., Winckler, G., Schaefer, J. M., Kaplan, M. R., Licht, K. J., and
Hall, B. L.: Pyroxene separation by HF leaching and its impact on helium
surface-exposure dating, Quat. Geochronol., 23, 1–8,
https://doi.org/10.1016/J.QUAGEO.2014.04.003, 2014. a
Buiron, D., Chappellaz, J., Stenni, B., Frezzotti, M., Baumgartner, M., Capron, E., Landais, A., Lemieux-Dudon, B., Masson-Delmotte, V., Montagnat, M., Parrenin, F., and Schilt, A.: TALDICE-1 age scale of the Talos Dome deep ice core, East Antarctica, Clim. Past, 7, 1–16, https://doi.org/10.5194/cp-7-1-2011, 2011. a
Cavitte, M. G. P., Parrenin, F., Ritz, C., Young, D. A., Van Liefferinge, B., Blankenship, D. D., Frezzotti, M., and Roberts, J. L.: Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr, The Cryosphere, 12, 1401–1414, https://doi.org/10.5194/tc-12-1401-2018, 2018. a
Clark, P. U., Dyke, A. S., Shakun, J. D., Carlson, A. E., Clark, J., Wohlfarth,
B., Mitrovica, J. X., Hostetler, S. W., and McCabe, A. M.: The Last Glacial
Maximum, Science, 325, 710–714,
https://doi.org/10.1126/science.1172873, 2009. a
Clason, C. C., Greenwood, S. L., Selmes, N., Lea, J. M., Jamieson, S. S. R.,
Nick, F. M., and Holmlund, P.: Controls on the early Holocene collapse of
the Bothnian Sea Ice Stream, J. Geophys. Res.-Earth,
121, 2494–2513, https://doi.org/10.1002/2016JF004050, 2016. a
Denton, G. H., Bockheim, J. G., Wilson, S. C., Leide, J. E., and Andersen,
B. G.: Late Quaternary Ice-Surface Fluctuations of Beardmore Glacier,
Transantarctic Mountains, Quaternary Res., 31, 183–209,
https://doi.org/10.1016/0033-5894(89)90005-7, 1989. a
Denton, G. H., Anderson, R. F., Toggweiler, J. R., Edwards, R. L., Schaefer,
J. M., and Putnam, A. E.: The last glacial termination., Science, 328, 1652–1656, https://doi.org/10.1126/science.1184119, 2010. a
Di Nicola, L., Strasky, S., Schlüchter, C., Salvatore, M. C.,
Akçar, N., Kubik, P. W., Christl, M., Kasper, H. U., Wieler, R., and
Baroni, C.: Multiple cosmogenic nuclides document complex Pleistocene
exposure history of glacial drifts in Terra Nova Bay (northern Victoria Land,
Antarctica), Quaternary Res., 71, 83–92,
https://doi.org/10.1016/j.yqres.2008.07.004, 2009. a, b
Di Nicola, L., Baroni, C., Strasky, S., Salvatore, M. C., Schlüchter, C.,
Akçar, N., Kubik, P. W., and Wieler, R.: Multiple cosmogenic nuclides
document the stability of the East Antarctic Ice Sheet in northern Victoria
Land since the Late Miocene (5–7 Ma), Quaternary Sci. Rev., 57,
85–94, https://doi.org/10.1016/j.quascirev.2012.09.026, 2012. a
Domack, E., Leventer, A., Dunbar, R., Brachfeld, S., Manley, P., and McClennen,
C.: Calving Bay Reentrants During the Late Pleistocene to Holocene Retreat
of the Antarctic Ice Sheet: Sedimentologic and Geomorphologic Evidence,
AGUFM, 2003, PP32D–07, available at:
https://ui.adsabs.harvard.edu/abs/2003AGUFMPP32D..07D/abstract (last access: 10 April 2021),
2003. a, b
Domack, E., Amblàs, D., Gilbert, R., Brachfeld, S., Camerlenghi, A.,
Rebesco, M., Canals, M., and Urgeles, R.: Subglacial morphology and glacial
evolution of the Palmer deep outlet system, Antarctic Peninsula,
Geomorphology, 75, 125–142, https://doi.org/10.1016/J.GEOMORPH.2004.06.013, 2006. a
Domack, E. W., Jacobson, E. A., Shipp, S., and Anderson, J. B.: Late
Pleistocene–Holocene retreat of the West Antarctic Ice-Sheet system in the
Ross Sea: Part 2 – Sedimentologic and stratigraphic signature, Geol.
Soc. Am. Bull., 111, 1517,
https://doi.org/10.1130/0016-7606(1999)111<1517:LPHROT>2.3.CO;2, 1999a. a, b, c, d, e, f, g
Domack, E. W., Taviani, M., and Rodriguez, A.: Recent sediment remolding on a
deep shelf, Ross Sea: Implications for radiocarbon dating of Antarctic marine
sediments, Quaternary Sci. Rev., 18, 1445–1451,
https://doi.org/10.1016/S0277-3791(99)00042-6, 1999b. a
Dowdeswell, J. A., Cofaigh, C. O., and Pudsey, C. J.: Thickness and extent of
the subglacial till layer beneath an Antarctic paleo–ice stream, Geology,
32, 13–16, https://doi.org/10.1130/G19864.1, 2004. a
Dowdeswell, J. A., Canals, M., Jakobsson, M., Todd, B. J., Dowdeswell, E. K.,
and Hogan, K. A.: Introduction: an Atlas of Submarine Glacial Landforms,
Geological Society, London, Memoirs, 46, 3–14, https://doi.org/10.1144/M46.171, 2016. a
Dubbini, M., Cianfarra, P., Casula, G., Capra, A., and Salvini, F.: Active
tectonics in northern Victoria Land (Antarctica) inferred from the
integration of GPS data and geologic setting, J. Geophys. Res., 115, B12421, https://doi.org/10.1029/2009JB007123, 2010. a
Enderlin, E. M., Howat, I. M., and Vieli, A.: High sensitivity of tidewater outlet glacier dynamics to shape, The Cryosphere, 7, 1007–1015, https://doi.org/10.5194/tc-7-1007-2013, 2013. a
Fogwill, C. J., Hein, A. S., Bentley, M. J., and Sugden, D. E.: Do blue-ice
moraines in the Heritage Range show the West Antarctic ice sheet survived the
last interglacial?, Palaeogeogr. Palaeocl.,
335–336, 61–70, https://doi.org/10.1016/J.PALAEO.2011.01.027, 2012. a
Fretwell, P., Pritchard, H. D., Vaughan, D. G., Bamber, J. L., Barrand, N. E., Bell, R., Bianchi, C., Bingham, R. G., Blankenship, D. D., Casassa, G., Catania, G., Callens, D., Conway, H., Cook, A. J., Corr, H. F. J., Damaske, D., Damm, V., Ferraccioli, F., Forsberg, R., Fujita, S., Gim, Y., Gogineni, P., Griggs, J. A., Hindmarsh, R. C. A., Holmlund, P., Holt, J. W., Jacobel, R. W., Jenkins, A., Jokat, W., Jordan, T., King, E. C., Kohler, J., Krabill, W., Riger-Kusk, M., Langley, K. A., Leitchenkov, G., Leuschen, C., Luyendyk, B. P., Matsuoka, K., Mouginot, J., Nitsche, F. O., Nogi, Y., Nost, O. A., Popov, S. V., Rignot, E., Rippin, D. M., Rivera, A., Roberts, J., Ross, N., Siegert, M. J., Smith, A. M., Steinhage, D., Studinger, M., Sun, B., Tinto, B. K., Welch, B. C., Wilson, D., Young, D. A., Xiangbin, C., and Zirizzotti, A.: Bedmap2: improved ice bed, surface and thickness datasets for Antarctica, The Cryosphere, 7, 375–393, https://doi.org/10.5194/tc-7-375-2013, 2013. a, b, c, d, e
Frezzotti, M., Pourchet, M., Flora, O., Gandolfi, S., Gay, M., Urbini, S.,
Vincent, C., Becagli, S., Gragnani, R., Proposito, M., Severi, M., Traversi,
R., Udisti, R., and Fily, M.: Spatial and temporal variability of snow
accumulation in East Antarctica from traverse data, J. Glaciol.,
51, 113–124, 2005. a
Frignani, M., Giglio, F., Langone, L., Ravaioli, M., and Mangini, A.: Late
Pleistocene-Holocene sedimentary fluxes of organic carbon and biogenic silica
in the northwestern Ross Sea, Antarctica, Ann. Glaciol., 27,
697–703, https://doi.org/10.3189/1998AoG27-1-697-703, 1998. a
Frisia, S., Weyrich, L. S., Hellstrom, J., Borsato, A., Golledge, N. R.,
Anesio, A. M., Bajo, P., Drysdale, R. N., Augustinus, P. C., Rivard, C., and
Cooper, A.: The influence of Antarctic subglacial volcanism on the global
iron cycle during the Last Glacial Maximum, Nat. Commun., 8,
15425, https://doi.org/10.1038/ncomms15425, 2017. a
Giorgetti, G. and Baroni, C.: High-resolution analysis of silica and
sulphate-rich rock varnishes from Victoria Land (Antarctica), European
J. Mineralogy, 19, 381–389, https://doi.org/10.1127/0935-1221/2007/0019-1725,
2007. a
Goehring, B. M., Balco, G., Todd, C., Moening-Swanson, I., and Nichols, K.:
Late-glacial grounding line retreat in the northern Ross Sea, Antarctica,
Geology, 47, 113–124, https://doi.org/10.1130/G45413.1, 2019. a
Greenwood, S. L., Simkins, L. M., Halberstadt, A. R. W., Prothro, L. O., and
Anderson, J. B.: Holocene reconfiguration and readvance of the East
Antarctic Ice Sheet, Nat. Commun., 9, 3176,
https://doi.org/10.1038/s41467-018-05625-3, 2018. a
Hall, B. L.: Holocene glacial history of Antarctica and the sub-Antarctic
islands, Quaternary Sci. Rev., 28, 2213–2230,
https://doi.org/10.1016/j.quascirev.2009.06.011, 2009. a
Howat, I. M., Porter, C., Smith, B. E., Noh, M.-J., and Morin, P.: The Reference Elevation Model of Antarctica, The Cryosphere, 13, 665–674, https://doi.org/10.5194/tc-13-665-2019, 2019. a, b, c, d
IMBIE, T.: Mass balance of the Antarctic Ice Sheet from 1992 to 2017, Nature,
558, 219–222, https://doi.org/10.1038/s41586-018-0179-y, 2018. a
IPCC: Climate Change 2013: The Physical Science Basis. Contribution of
Working Group I to the Fifth Assessment Report of the Intergovernmental Panel
on Climate Change, Tech. rep., IPCC, 2013. a
Jamieson, S. S. R., Vieli, A., Cofaigh, C. O., Stokes, C. R., Livingstone,
S. J., and Hillenbrand, C.-D.: Understanding controls on rapid ice-stream
retreat during the last deglaciation of Marguerite Bay, Antarctica, using a
numerical model, J. Geophys. Res.-Earth, 119,
247–263, https://doi.org/10.1002/2013JF002934, 2014. a, b, c
Johnson, J. S., Hillenbrand, C.-D., Smellie, J. L., and Rocchi, S.: The last
deglaciation of Cape Adare, northern Victoria Land, Antarctica, Antarct.
Sci., 20, 581, https://doi.org/10.1017/S0954102008001417, 2008. a, b
Johnson, J. S., Bentley, M. J., Smith, J. A., Finkel, R. C., Rood, D. H., Gohl,
K., Balco, G., Larter, R. D., and Schaefer, J. M.: Rapid Thinning of Pine
Island Glacier in the Early Holocene, Science, 343, 999–1001, 2014. a
Johnson, J. S., Smith, J. A., Schaefer, J. M., Young, N. E., Goehring, B. M.,
Hillenbrand, C.-D., Lamp, J. L., Finkel, R. C., and Gohl, K.: The last
glaciation of Bear Peninsula, central Amundsen Sea Embayment of Antarctica:
Constraints on timing and duration revealed by in situ cosmogenic 14C and
10Be dating, Quaternary Sci. Rev., 178, 77–88,
https://doi.org/10.1016/J.QUASCIREV.2017.11.003, 2017. a
Johnson, J. S., Nichols, K. A., Goehring, B. M., Balco, G., and Schaefer,
J. M.: Abrupt mid-Holocene ice loss in the western Weddell Sea Embayment of
Antarctica, Earth Planet. Sc. Lett., 518, 127–135,
https://doi.org/10.1016/J.EPSL.2019.05.002, 2019. a
Johnson, J. S., Roberts, S. J., Rood, D. H., Pollard, D., Schaefer, J. M.,
Whitehouse, P. L., Ireland, L. C., Lamp, J. L., Goehring, B. M., Rand, C.,
and Smith, J. A.: Deglaciation of Pope Glacier implies widespread early
Holocene ice sheet thinning in the Amundsen Sea sector of Antarctica, Earth
Planet. Sc. Lett., 548, 116501,
https://doi.org/10.1016/J.EPSL.2020.116501, 2020. a
Jones, R., Small, D., Cahill, N., Bentley, M., and Whitehouse, P.: iceTEA:
Tools for plotting and analysing cosmogenic-nuclide surface-exposure data
from former ice margins, Quat. Geochronol., 51, 72–86,
https://doi.org/10.1016/J.QUAGEO.2019.01.001, 2019. a, b, c, d
Jones, R., Whitmore, R., Mackintosh, A., Norton, K., Eaves, S., Stutz, J., and
Christl, M.: Regional-scale abrupt Mid-Holocene ice sheet thinning in the
western Ross Sea, Antarctica, Geology, 49, 278–282, https://doi.org/10.1130/g48347.1, 2020. a, b, c
Jones, R. S., Mackintosh, A. N., Norton, K. P., Golledge, N. R., Fogwill,
C. J., Kubik, P. W., Christl, M., and Greenwood, S. L.: Rapid Holocene
thinning of an East Antarctic outlet glacier driven by marine ice sheet
instability, Nat. Commun., 6, 8910, https://doi.org/10.1038/ncomms9910, 2015. a, b, c, d, e, f, g
Joughin, I., Bamber, J. L., Scambos, T., Tulaczyk, S., Fahnestock, M., and
MacAyeal, D. R.: Integrating satellite observations with modelling: basal
shear stress of the Filcher-Ronne ice streams, Antarctica, Philos.
T. Roy. Soc. A, 364, 1795–1814, https://doi.org/10.1098/rsta.2006.1799, 2006. a
Joy, K., Fink, D., Storey, B., and Atkins, C.: A 2 million year glacial
chronology of the Hatherton Glacier, Antarctica and implications for the size
of the East Antarctic Ice Sheet at the Last Glacial Maximum, Quaternary Sci. Rev., 83, 46–57, https://doi.org/10.1016/j.quascirev.2013.10.028, 2014. a
Kingslake, J., Scherer, R. P., Albrecht, T., Coenen, J., Powell, R. D., Reese,
R., Stansell, N. D., Tulaczyk, S., Wearing, M. G., and Whitehouse, P. L.:
Extensive retreat and re-advance of the West Antarctic Ice Sheet during the
Holocene, Nature, 558, 430–434, https://doi.org/10.1038/s41586-018-0208-x, 2018. a, b
Lambeck, K., Rouby, H., Purcell, A., Sun, Y., and Sambridge, M.: Sea level and
global ice volumes from the Last Glacial Maximum to the Holocene.,
P. Natl. Acad. Sci. USA, 111, 15296–15303, https://doi.org/10.1073/pnas.1411762111, 2014. a, b, c
Lenaerts, J. T. M., van den Broeke, M. R., van de Berg, W. J., van Meijgaard,
E., and Kuipers Munneke, P.: A new, high-resolution surface mass balance map
of Antarctica (1979–2010) based on regional atmospheric climate modeling,
Geophys. Res. Lett., 39, L04501, https://doi.org/10.1029/2011GL050713, 2012. a
Leventer, A., Domack, E., Dunbar, R., Pike, J., Stickley, C., Maddison, E.,
Brachfeld, S., Manley, P., and McClennen, C.: Marine sediment record from
the East Antarctic margin reveals dynamics of ice sheet recession, GSA
Today, 16, 4–10, https://doi.org/10.1130/GSAT01612A.1, 2006. a, b
Licht, K. J. and Andrews, J. T.: The 14 C Record of Late Pleistocene Ice
Advance and Retreat in the Central Ross Sea, Antarctica, Arct. Antarct.
Alp. Res., 34, 324, https://doi.org/10.2307/1552491, 2002. a, b
Lifton, N., Sato, T., and Dunai, T. J.: Scaling in situ cosmogenic nuclide
production rates using analytical approximations to atmospheric cosmic-ray
fluxes, Earth Planet. Sc. Lett., 386, 149–160,
https://doi.org/10.1016/J.EPSL.2013.10.052, 2014. a
Liu, Z., Otto-Bliesner, B. L., He, F., Brady, E. C., Tomas, R., Clark, P. U.,
Carlson, A. E., Lynch-Stieglitz, J., Curry, W., Brook, E., Erickson, D.,
Jacob, R., Kutzbach, J., and Cheng, J.: Transient simulation of last
deglaciation with a new mechanism for bolling-allerod warming, Science, 325,
310–314, https://doi.org/10.1126/science.1171041, 2009. a
Livingstone, S. J., O Cofaigh, C., Stokes, C. R., Hillenbrand, C.-D., Vieli,
A., and Jamieson, S. S.: Antarctic palaeo-ice streams, Earth-Sci.
Rev., 111, 90–128, https://doi.org/10.1016/j.earscirev.2011.10.003, 2012. a, b
Livingstone, S. J., Stokes, C. R., Cofaigh, C., Hillenbrand, C. D., Vieli, A.,
Jamieson, S. S. R., Spagnolo, M., and Dowdeswell, J. A.: Subglacial
processes on an Antarctic ice stream bed. 1: Sediment transport and bedform
genesis inferred from marine geophysical data, J. Glaciol., 62,
270–284, https://doi.org/10.1017/jog.2016.18, 2016. a
Lowry, D. P., Golledge, N. R., Bertler, N. A. N., Jones, R. S., and McKay, R.:
Deglacial grounding-line retreat in the Ross Embayment, Antarctica,
controlled by ocean and atmosphere forcing, Science Advances, 5, eaav8754,
https://doi.org/10.1126/sciadv.aav8754, 2019. a, b, c
Lowry, D. P., Golledge, N. R., Bertler, N. A., Jones, R. S., McKay, R., and
Stutz, J.: Geologic controls on ice sheet sensitivity to deglacial climate
forcing in the Ross Embayment, Antarctica, Quaternary Science Advances, 1,
100002, https://doi.org/10.1016/J.QSA.2020.100002, 2020. a
MacGregor, J. A., Boisvert, L. N., Medley, B., Petty, A. A., Harbeck, J. P.,
Bell, R. E., Blair, J. B., Blanchard-Wrigglesworth, E., Buckley, E. M.,
Christoffersen, M. S., Cochran, J. R., Csathó, B. M., Marco, E. L. D.,
Dominguez, R. T., Fahnestock, M. A., Farrell, S. L., Gogineni, S. P.,
Greenbaum, J. S., Hansen, C. M., Hofton, M. A., Holt, J. W., Jezek, K. C.,
Koenig, L. S., Kurtz, N. T., Kwok, R., Larsen, C. F., Leuschen, C. J., Locke,
C. D., Manizade, S. S., Martin, S., Neumann, T. A., Nowicki, S. M., Paden,
J. D., Richter-Menge, J. A., Rignot, E. J., Rodríguez-Morales, F.,
Siegfried, M. R., Smith, B. E., Sonntag, J. G., Studinger, M., Tinto, K. J.,
Truffer, M., Wagner, T. P., Woods, J. E., Young, D. A., and Yungel, J. K.:
The Scientific Legacy of NASA’s Operation IceBridge, Rev.
Geophys., 59, e2020RG000712, https://doi.org/10.1029/2020RG000712, 2021. a
Mackintosh, A., White, D., Fink, D., Gore, D. B., Pickard, J., and Fanning,
P. C.: Exposure ages from mountain dipsticks in Mac. Robertson Land, East
Antarctica, indicate little change in ice-sheet thickness since the Last
Glacial Maximum, Geology, 35, 551, https://doi.org/10.1130/G23503A.1, 2007. a, b
Mackintosh, A. N., Verleyen, E., O'Brien, P. E., White, D. A., Jones, R. S.,
McKay, R., Dunbar, R., Gore, D. B., Fink, D., Post, A. L., Miura, H.,
Leventer, A., Goodwin, I., Hodgson, D. A., Lilly, K., Crosta, X., Golledge,
N. R., Wagner, B., Berg, S., van Ommen, T., Zwartz, D., Roberts, S. J.,
Vyverman, W., and Masse, G.: Retreat history of the East Antarctic Ice Sheet
since the Last Glacial Maximum, Quaternary Sci. Rev., 100, 10–30,
https://doi.org/10.1016/J.QUASCIREV.2013.07.024, 2014. a, b, c
Marrero, S. M., Phillips, F. M., Borchers, B., Lifton, N., Aumer, R., and
Balco, G.: Cosmogenic nuclide systematics and the CRONUScalc program,
Quat. Geochronol., 31, 160–187, https://doi.org/10.1016/J.QUAGEO.2015.09.005,
2016. a
McKay, R., Golledge, N. R., Maas, S., Naish, T., Levy, R., Dunbar, G., and
Kuhn, G.: Antarctic marine ice-sheet retreat in the Ross Sea during the
early Holocene, Geology, 44, 7–10, https://doi.org/10.1130/G37315.1, 2016. a
McKay, R. M., Dunbar, G. B., Naish, T. R., Barrett, P. J., Carter, L., and
Harper, M.: Retreat history of the Ross Ice Sheet (Shelf) since the Last
Glacial Maximum from deep-basin sediment cores around Ross Island,
Palaeogeogr. Palaeocl., 260, 245–261,
https://doi.org/10.1016/j.palaeo.2007.08.015, 2008. a, b, c, d, e
Menviel, L., Timmermann, A., Timm, O. E., and Mouchet, A.: Deconstructing the
Last Glacial termination: The role of millennial and orbital-scale forcings,
Quaternary Sci. Rev., 30, 1155–1172,
https://doi.org/10.1016/j.quascirev.2011.02.005, 2011. a
Mercer, J. H.: West Antarctic ice sheet and CO2 greenhouse effect: a threat of
disaster, Nature, 271, 321–325, https://doi.org/10.1038/271321a0, 1978. a
Meredith, M., Sommerkorn, M., Cassotta, S., Derksen, C., Ekaykin, A., Hollowed,
A., Kofinas, G., Mackintosh, A., Melbourne-Thomas, J., Muelbert, M.,
Ottersen, G., Pritchard, H., and Schuur, E.: Polar Regions. In: IPCC Special
Report on the Ocean and Cryosphere in a Changing Climate, edited by: Pörtner, H.-O.,
Roberts, D. C., Masson-Delmotte, V., Zhai, P., Tignor, M., Poloczanska, E.,
Mintenbeck, K., Alegría, A., Nicolai, M., Okem, A., Petzold, J., Rama, B.,
and Weye, N. M., Tech. rep., IPCC,
available at: https://www.ipcc.ch/srocc/chapter/chapter-3-2/ (last access: 10 April 2021), 2019. a
Miles, B. W. J., Stokes, C. R., Vieli, A., and Cox, N. J.: Rapid,
climate-driven changes in outlet glaciers on the Pacific coast of East
Antarctica, Nature, 500, 563–566, https://doi.org/10.1038/nature12382, 2013. a
Morlighem, M., Rignot, E., Binder, T., Blankenship, D., Drews, R., Eagles, G.,
Eisen, O., Ferraccioli, F., Forsberg, R., Fretwell, P., and others: Deep
glacial troughs and stabilizing ridges unveiled beneath the margins of the
Antarctic ice sheet, Nat. Geosci., 13, 1–6, 2019. a
Nichols, K. A., Goehring, B. M., Balco, G., Johnson, J. S., Hein, A. S., and Todd, C.: New Last Glacial Maximum ice thickness constraints for the Weddell Sea Embayment, Antarctica, The Cryosphere, 13, 2935–2951, https://doi.org/10.5194/tc-13-2935-2019, 2019. a
Nick, F. M., Vieli, A., Howat, I. M., and Joughin, I.: Large-scale changes in
Greenland outlet glacier dynamics triggered at the terminus, Nat.
Geosci., 2, 110–114, https://doi.org/10.1038/NGEO394, 2009. a
Nick, F. M., Van Der Veen, C. J., Vieli, A., and Benn, D. I.: A physically
based calving model applied to marine outlet glaciers and implications for
the glacier dynamics, J. Glaciol., 56, 781–794,
https://doi.org/10.3189/002214310794457344, 2010. a
Norton, K. P., von Blanckenburg, F., Schlunegger, F., Schwab, M., and Kubik,
P. W.: Cosmogenic nuclide-based investigation of spatial erosion and
hillslope channel coupling in the transient foreland of the Swiss Alps,
Geomorphology, 95, 474–486, https://doi.org/10.1016/J.GEOMORPH.2007.07.013, 2008. a
O Cofaigh, C., Dowdeswell, J. A., Allen, C. S., Hiemstra, J. F., Pudsey, C. J.,
Evans, J., and J.A. Evans, D.: Flow dynamics and till genesis associated
with a marine-based Antarctic palaeo-ice stream, Quaternary Sci. Rev.,
24, 709–740, https://doi.org/10.1016/J.QUASCIREV.2004.10.006, 2005. a
Oberholzer, P., Baroni, C., Schaefer, J., Orombelli, G., Ochs, S. I., W.,
K. P., Baur, H., and Wieler, R.: Limited Pliocene/Pleistocene glaciation in
Deep Freeze Range, northern Victoria Land, Antarctica, derived from in situ
cosmogenic nuclides, Antarct. Sci., 15, 493–502,
https://doi.org/10.1017/S0954102003001603, 2003. a
Oberholzer, P., Baroni, C., Salvatore, M., Baur, H., and Wieler, R.: Dating
late Cenozoic erosional surfaces in Victoria Land, Antarctica, with
cosmogenic neon in pyroxenes, Antarct. Sci., 20, 89–98,
https://doi.org/10.1017/S095410200700079X, 2008. a
Paxman, G. J., Jamieson, S. S., Hochmuth, K., Gohl, K., Bentley, M. J.,
Leitchenkov, G., and Ferraccioli, F.: Reconstructions of Antarctic
topography since the Eocene–Oligocene boundary, Palaeogeogr.
Palaeocl., 535, 109346,
https://doi.org/10.1016/J.PALAEO.2019.109346, 2019. a
Pedro, J. B., Bostock, H. C., Bitz, C. M., He, F., Vandergoes, M. J., Steig,
E. J., Chase, B. M., Krause, C. E., Rasmussen, S. O., Markle, B. R., and
Cortese, G.: The spatial extent and dynamics of the Antarctic Cold
Reversal, Nat. Geosci., 9, 51–55, https://doi.org/10.1038/ngeo2580, 2016. a
Pollard, D., Chang, W., Haran, M., Applegate, P., and DeConto, R.: Large ensemble modeling of the last deglacial retreat of the West Antarctic Ice Sheet: comparison of simple and advanced statistical techniques, Geosci. Model Dev., 9, 1697–1723, https://doi.org/10.5194/gmd-9-1697-2016, 2016. a
Pollard, D., Gomez, N., and Deconto, R. M.: Variations of the Antarctic Ice
Sheet in a Coupled Ice Sheet-Earth-Sea Level Model: Sensitivity to
Viscoelastic Earth Properties, J. Geophys. Res.-Earth, 122, 2124–2138, https://doi.org/10.1002/2017JF004371, 2017. a
Pollard, D., Gomez, N., DeConto, R. M., and Han, H. K.: Estimating Modern
Elevations of Pliocene Shorelines Using a Coupled Ice Sheet‐Earth‐Sea
Level Model, J. Geophys. Res.-Earth, 123,
2279–2291, https://doi.org/10.1029/2018JF004745, 2018. a
Pritchard, H. D., Arthern, R. J., Vaughan, D. G., and Edwards, L. A.:
Extensive dynamic thinning on the margins of the Greenland and Antarctic ice
sheets, Nature, 461, 971–975, https://doi.org/10.1038/nature08471, 2009. a, b
Pritchard, H. D., Ligtenberg, S. R. M., Fricker, H. A., Vaughan, D. G., van den
Broeke, M. R., and Padman, L.: Antarctic ice-sheet loss driven by basal
melting of ice shelves, Nature, 484, 502–505, https://doi.org/10.1038/nature10968,
2012. a
Prothro, L. O., Majewski, W., Yokoyama, Y., Simkins, L. M., Anderson, J. B.,
Yamane, M., Miyairi, Y., and Ohkouchi, N.: Timing and pathways of East
Antarctic Ice Sheet retreat, Quaternary Sci. Rev., 230, 106166,
https://doi.org/10.1016/J.QUASCIREV.2020.106166, 2020. a, b
Rhee, H. H., Lee, M. K., Seong, Y. B., Hong, S., Lee, J. I., Yoo, K.-C., and
Yu, B. Y.: Timing of the local last glacial maximum in Terra Nova Bay,
Antarctica defined by cosmogenic dating, Quaternary Sci. Rev., 221,
105897, https://doi.org/10.1016/J.QUASCIREV.2019.105897, 2019. a
Rignot, E., Mouginot, J., Scheuchl, B., Broeke, M. v. d., Wessem, M. J. v., and
Morlighem, M.: Four decades of Antarctic Ice Sheet mass balance from
1979–2017, P. Natl. Acad. Sci. USA, 116,
1095–1103, https://doi.org/10.1073/PNAS.1812883116, 2019. a
Rosenheim, B. E., Santoro, J. A., Gunter, M., and Domack, E. W.: Improving
Antarctic Sediment 14C Dating Using Ramped Pyrolysis: An Example from the
Hugo Island Trough, Radiocarbon, 55, 115–126,
https://doi.org/10.1017/s0033822200047846, 2013. a
Salvini, F. and Storti, F.: Cenozoic tectonic lineaments of the Terra Nova Bay
region, Ross Embayment, Antarctica, Global Planet. Change, 23,
129–144, https://doi.org/10.1016/S0921-8181(99)00054-5, 1999. a
Schoof, C.: Ice sheet grounding line dynamics: Steady states, stability, and
hysteresis, J. Geophys. Res.-Earth, 112, F03S28,
https://doi.org/10.1029/2006JF000664, 2007. a
Schroeder, D. M., Bingham, R. G., Blankenship, D. D., Christianson, K., Eisen,
O., Flowers, G. E., Karlsson, N. B., Koutnik, M. R., Paden, J. D., and
Siegert, M. J.: Five decades of radioglaciology, Ann. Glaciol., 61,
1–13, https://doi.org/10.1017/AOG.2020.11, 2020. a
Shipp, S., Anderson, J. B., Domack, E. W., Jacobson, E. A., Shipp, S., and
Anderson, J. B.: Late Pleistocene–Holocene retreat of the West Antarctic
Ice-Sheet system in the Ross Sea: Part 1 – Geophysical results, GSA
Bulletin, 111, 1517–1536,
https://doi.org/10.1130/0016-7606(1999)111<1486:LPHROT>2.3.CO;2, 1999. a, b, c, d, e, f
Siegert, M. J.: Glacial–interglacial variations in central East Antarctic
ice accumulation rates, Quaternary Sci. Rev., 22, 741–750,
https://doi.org/10.1016/S0277-3791(02)00191-9, 2003. a, b
Smellie, J. L., Rocchi, S., Johnson, J. S., Di Vincenzo, G., and Schaefer,
J. M.: A tuff cone erupted under frozen-bed ice (northern Victoria Land,
Antarctica): linking glaciovolcanic and cosmogenic nuclide data for ice sheet
reconstructions, B. Volcanol., 80, 12,
https://doi.org/10.1007/s00445-017-1185-x, 2018. a
Spector, P., Stone, J., Cowdery, S. G., Hall, B., Conway, H., and Bromley, G.:
Rapid Early-Holocene Deglaciation in the Ross Sea, Antarctica, Geophys.
Res. Lett., 44, 7817–7825, https://doi.org/10.1002/2017GL074216, 2017. a, b, c, d
Stern, T., Baxter, A., and Barrett, P.: Isostatic rebound due to glacial
erosion within the Transantarctic Mountains, Geology, 33, 221,
https://doi.org/10.1130/G21068.1, 2005. a
Stevens, C., Fusco, G., Yun, S., Grant, B., Robinson, N., and Hwang, C. Y.:
The influence of the Drygalski Ice Tongue on the local ocean, Ann. Glaciol., 58, 51–59,
https://doi.org/10.1017/aog.2017.4, 2017. a
Stokes, C. R., Tarasov, L., Blomdin, R., Cronin, T. M., Fisher, T. G.,
Gyllencreutz, R., Hättestrand, C., Heyman, J., Hindmarsh, R. C.,
Hughes, A. L., Jakobsson, M., Kirchner, N., Livingstone, S. J., Margold, M.,
Murton, J. B., Noormets, R., Peltier, W. R., Peteet, D. M., Piper, D. J.,
Preusser, F., Renssen, H., Roberts, D. H., Roche, D. M., Saint-Ange, F.,
Stroeven, A. P., and Teller, J. T.: On the reconstruction of palaeo-ice
sheets: Recent advances and future challenges, Quaternary Sci. Rev.,
125, 15–49, https://doi.org/10.1016/J.QUASCIREV.2015.07.016, 2015. a
Stone, J. O., Balco, G. A., Sugden, D. E., Caffee, M. W., Sass, L. C., Cowdery,
S. G., and Siddoway, C.: Holocene deglaciation of Marie Byrd Land, West
Antarctica., Science, 299, 99–102,
https://doi.org/10.1126/science.1077998, 2003. a, b, c
Stuiver, M., Denton, G., Hughes, T., and Fastook, J.: History of the Marine
Ice Sheet in West Antarctic during the Last Glaciation: A working
hypothesis, in: The Last Great Ice Sheets, edited by: Denton, G. H. and
Hughes, T., Wiley, New York, 319–369, 1981. a
Stutz, J., Mackintosh, A., and Whitmore, R.: Cosmogenic isotopic data for Hughes Bluff, David Glacier area, available at: http://antarctica.ice-d.org/site/HUGBLUFF (last access: 7 December 2021), 2017. a
Stutz, J., Mackintosh, A., and Whitmore, R.: Cosmogenic isotopic data for D’Urville Wall, David Glacier area, available at: http://antarctica.ice-d.org/site/DWALL (last access: 7 December 2021), 2017. a
Stutz, J., Mackintosh, A., and Whitmore, R.: Cosmogenic isotopic data for Mt. Kring, David Glacier area, available at: http://antarctica.ice-d.org/site/KRING (last access: 7 December 2021), 2017. a
Stutz, J., Mackintosh, A., and Whitmore, R.: Cosmogenic isotopic data for Cape Phillipi, David Glacier area, available at: http://antarctica.ice-d.org/site/PHIL (last access: 7 December 2021), 2017. a
Stutz, J., Mackintosh, A., and Whitmore, R.: Cosmogenic isotopic data for Mt. Neumayer, David Glacier area, available at: http://antarctica.ice-d.org/site/MTNEU (last access: 7 December 2021), 2017. a
Sugden, D. E., Balco, G., Cowdery, S. G., Stone, J. O., and Sass, L. C.:
Selective glacial erosion and weathering zones in the coastal mountains of
Marie Byrd Land, Antarctica, Geomorphology, 67, 317–334,
https://doi.org/10.1016/J.GEOMORPH.2004.10.007, 2005. a, b
Todd, C., Stone, J., Conway, H., Hall, B., and Bromley, G.: Late Quaternary
evolution of Reedy Glacier, Antarctica, Quaternary Sci. Rev., 29,
1328–1341, https://doi.org/10.1016/j.quascirev.2010.02.001, 2010. a, b
van Wessem, J. M., van de Berg, W. J., Noël, B. P. Y., van Meijgaard, E., Amory, C., Birnbaum, G., Jakobs, C. L., Krüger, K., Lenaerts, J. T. M., Lhermitte, S., Ligtenberg, S. R. M., Medley, B., Reijmer, C. H., van Tricht, K., Trusel, L. D., van Ulft, L. H., Wouters, B., Wuite, J., and van den Broeke, M. R.: Modelling the climate and surface mass balance of polar ice sheets using RACMO2 – Part 2: Antarctica (1979–2016), The Cryosphere, 12, 1479–1498, https://doi.org/10.5194/tc-12-1479-2018, 2018. a, b, c, d
Vargo, L. J., Anderson, B. M., Horgan, H. J., Mackintosh, A. N., Lorrey, A. M.,
and Thornton, M.: Using structure from motion photogrammetry to measure past
glacier changes from historic aerial photographs, J. Glaciol., 63,
1105–1118, https://doi.org/10.1017/jog.2017.79, 2017. a
Veres, D., Bazin, L., Landais, A., Toyé Mahamadou Kele, H., Lemieux-Dudon, B., Parrenin, F., Martinerie, P., Blayo, E., Blunier, T., Capron, E., Chappellaz, J., Rasmussen, S. O., Severi, M., Svensson, A., Vinther, B., and Wolff, E. W.: The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years, Clim. Past, 9, 1733–1748, https://doi.org/10.5194/cp-9-1733-2013, 2013. a, b
Verleyen, E., Hodgson, D. A., Sabbe, K., Cremer, H., Emslie, S. D., Gibson, J.,
Hall, B., Imura, S., Kudoh, S., Marshall, G. J., McMinn, A., Melles, M.,
Newman, L., Roberts, D., Roberts, S. J., Singh, S. M., Sterken, M.,
Tavernier, I., Verkulich, S., de Vyver, E. V., Van Nieuwenhuyze, W., Wagner,
B., and Vyverman, W.: Post-glacial regional climate variability along the
East Antarctic coastal margin – Evidence from shallow marine and coastal
terrestrial records, Earth-Sci. Rev., 104, 199–212,
https://doi.org/10.1016/J.EARSCIREV.2010.10.006, 2011. a
Vieli, A. and Payne, A. J.: Assessing the ability of numerical ice sheet
models to simulate grounding line migration, J. Geophys. Res.-Earth, 110, F01003, https://doi.org/10.1029/2004JF000202, 2005. a, b
Weber, M. E., Clark, P. U., Kuhn, G., Timmermann, A., Sprenk, D., Gladstone,
R., Zhang, X., Lohmann, G., Menviel, L., Chikamoto, M. O., Friedrich, T., and
Ohlwein, C.: Millennial-scale variability in Antarctic ice-sheet discharge
during the last deglaciation, Nature, 510, 134–138,
https://doi.org/10.1038/nature13397, 2014. a
Weertman, J., Bentley, C. R., and Walker, J. C. F.: Stability of the Junction
of an Ice Sheet and an Ice Shelf, J. Glaciol., 13, 3–11,
https://doi.org/10.1017/S0022143000023327, 1974. a
White, D. A., Fink, D., and Gore, D. B.: Cosmogenic nuclide evidence for
enhanced sensitivity of an East Antarctic ice stream to change during the
last deglaciation, Geology, 39, 23–26, https://doi.org/10.1130/G31591.1, 2011. a
Whitehouse, P. L., Bentley, M. J., and Le Brocq, A. M.: A deglacial model for
Antarctica: geological constraints and glaciological modelling as a basis for
a new model of Antarctic glacial isostatic adjustment, Quaternary Sci. Rev., 32, 1–24, https://doi.org/10.1016/j.quascirev.2011.11.016, 2012. a
Whitehouse, P. L., Gomez, N., King, M. A., and Wiens, D. A.: Solid Earth
change and the evolution of the Antarctic Ice Sheet, Nat. Commun.,
10, 503, https://doi.org/10.1038/s41467-018-08068-y, 2019. a, b
Wuite, J., Jezek, K. C., Wu, X., Farness, K., and Carande, R.: The velocity
field and flow regime of David Glacier and Drygalski Ice Tongue, Antarctica,
Polar Geography, 32, 111–127, https://doi.org/10.1080/10889370902815499, 2009.
a, b
Yokoyama, Y., Anderson, J. B., Yamane, M., Simkins, L. M., Miyairi, Y.,
Yamazaki, T., Koizumi, M., Suga, H., Kusahara, K., Prothro, L., Hasumi, H.,
Southon, J. R., and Ohkouchi, N.: Widespread collapse of the Ross Ice Shelf
during the late Holocene, P. Natl. Acad. Sci. USA, 113, 2354–2359,
https://doi.org/10.1073/pnas.1516908113, 2016. a, b, c
Zoet, L. K., Anandakrishnan, S., Alley, R. B., Nyblade, A. A., and Wiens,
D. A.: Motion of an Antarctic glacier by repeated tidally modulated
earthquakes, Nat. Geosci., 5, 623–626, https://doi.org/10.1038/NGEO1555, 2012. a
Short summary
Understanding the long-term behaviour of ice sheets is essential to projecting future changes due to climate change. In this study, we use rocks deposited along the margin of the David Glacier, one of the largest glacier systems in the world, to reveal a rapid thinning event initiated over 7000 years ago and endured for ~ 2000 years. Using physical models, we show that subglacial topography and ocean heat are important drivers for change along this sector of the Antarctic Ice Sheet.
Understanding the long-term behaviour of ice sheets is essential to projecting future changes...
