Articles | Volume 20, issue 10
https://doi.org/10.5194/tc-20-5785-2026
© Author(s) 2026. 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-20-5785-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Oct 2026
Research article |
| 12 Oct 2026
| 12 Oct 2026
Interannual and seasonal evolution of supraglacial drainage systems on Nivlisen Ice Shelf, East Antarctica
Jiao Chen
CORRESPONDING AUTHOR
Department of Geography, Durham University, Durham, DH1 3LE, UK
Rebecca A. Hodge
Department of Geography, Durham University, Durham, DH1 3LE, UK
Stewart S. R. Jamieson
Department of Geography, Durham University, Durham, DH1 3LE, UK
Chris R. Stokes
Department of Geography, Durham University, Durham, DH1 3LE, UK
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Matilda Weatherley, Chris R. Stokes, Stewart S. R. Jamieson, Sindhu Ramanath, and Alessandro Silvano
The Cryosphere, 20, 5509–5532, https://doi.org/10.5194/tc-20-5509-2026, https://doi.org/10.5194/tc-20-5509-2026, 2026
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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.
Guy J. G. Paxman, Fiona J. Clubb, Stewart S. R. Jamieson, and Alexander L. Densmore
Earth Surf. Dynam., 14, 575–599, https://doi.org/10.5194/esurf-14-575-2026, https://doi.org/10.5194/esurf-14-575-2026, 2026
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This study focusses on the Gamburtsev Subglacial Mountains, a 600 km-long mountain range that is completely hidden beneath the Antarctic Ice Sheet. We look at the valley networks within the Gamburtsevs and use these to understand how the mountains formed. Our main findings are that the valleys were first cut by rivers that existed before Antarctica was glaciated, the shape of the valleys is affected by the bedrock geology, and the mountains are probably younger than previously thought.
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
The Cryosphere, 20, 3705–3737, https://doi.org/10.5194/tc-20-3705-2026, https://doi.org/10.5194/tc-20-3705-2026, 2026
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We review research about a group of fast-flowing Antarctic ice streams, the Foundation-Patuxent-Academy System. Previously, we knew little about how these ice streams flow, how they interact with each other and the ocean, what their geological history was, and how they might evolve in a warming world. By reviewing existing research, we have identified the future research needed to determine how these ice streams function, and how they might contribute to future global sea level rise.
Felipe Napoleoni, Michael J. Bentley, Neil Ross, Stewart S. R. Jamieson, José A. Uribe, Jonathan Oberreuter, Rodrigo Zamora, Andrés Rivera, Andrew M. Smith, Robert G. Bingham, and Kenichi Matsuoka
The Cryosphere, 20, 2793–2824, https://doi.org/10.5194/tc-20-2793-2026, https://doi.org/10.5194/tc-20-2793-2026, 2026
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We mapped buried layers inside West Antarctic ice across 13,000 km² near the Amundsen–Weddell divide using radar. Some layers may be up to 17 kyr old. The layers remain well preserved in slow-moving ice but become distorted where ice flows faster. Snowfall has long been greater on one side of the divide, suggesting the ice divide has remained stable for thousands of years. Our study helps connect climate records across West Antarctica and improve models used to predict future ice-sheet change.
Holly Wytiahlowsky, Chris R. Stokes, Rebecca A. Hodge, Caroline C. Clason, and Stewart S. R. Jamieson
The Cryosphere, 19, 6461–6482, https://doi.org/10.5194/tc-19-6461-2025, https://doi.org/10.5194/tc-19-6461-2025, 2025
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Channels on glaciers are important due to their role in transporting glacial meltwater 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 low-elevation glaciers with gentle slopes and few crevasses. Most channels run off the glacier, but 20 % enter the glacier.
Charlotte M. Carter, Steven Franke, Daniela Jansen, Chris R. Stokes, Veit Helm, John Paden, and Olaf Eisen
The Cryosphere, 19, 5299–5315, https://doi.org/10.5194/tc-19-5299-2025, https://doi.org/10.5194/tc-19-5299-2025, 2025
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The subglacial landforms beneath actively fast-flowing ice in Greenland have not been explored in detail, as digital elevation models have not had a high enough resolution to see these features. We use swath radar imaging to visualise landforms at the onset of an ice stream, revealing mega-scale glacial lineations, that would usually be assumed to be indicative of faster ice flow than the current velocities. Interpretation of the landscape also gives an indication of the properties of the bed.
Benjamin J. Stoker, Helen E. Dulfer, Chris R. Stokes, Victoria H. Brown, Christopher D. Clark, Colm Ó Cofaigh, David J. A. Evans, Duane Froese, Sophie L. Norris, and Martin Margold
The Cryosphere, 19, 869–910, https://doi.org/10.5194/tc-19-869-2025, https://doi.org/10.5194/tc-19-869-2025, 2025
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The retreat of the northwestern Laurentide Ice Sheet allows us to investigate how the ice drainage network evolves over millennial timescales and understand the influence of climate forcing, glacial lakes and the underlying geology on the rate of deglaciation. We reconstruct the changes in ice flow at 500-year intervals and identify rapid reorganisations of the drainage network, including variations in ice streaming that we link to climatically driven changes in the ice sheet surface slope.
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.
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.
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.
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.
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.
Jamey Stutz, Andrew Mackintosh, Kevin Norton, Ross Whitmore, Carlo Baroni, Stewart S. R. Jamieson, Richard S. Jones, Greg Balco, Maria Cristina Salvatore, Stefano Casale, Jae Il Lee, Yeong Bae Seong, Robert McKay, Lauren J. Vargo, Daniel Lowry, Perry Spector, Marcus Christl, Susan Ivy Ochs, Luigia Di Nicola, Maria Iarossi, Finlay Stuart, and Tom Woodruff
The Cryosphere, 15, 5447–5471, https://doi.org/10.5194/tc-15-5447-2021, https://doi.org/10.5194/tc-15-5447-2021, 2021
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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.
Melanie Marochov, Chris R. Stokes, and Patrice E. Carbonneau
The Cryosphere, 15, 5041–5059, https://doi.org/10.5194/tc-15-5041-2021, https://doi.org/10.5194/tc-15-5041-2021, 2021
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Research into the use of deep learning for pixel-level classification of landscapes containing marine-terminating glaciers is lacking. We adapt a novel and transferable deep learning workflow to classify satellite imagery containing marine-terminating outlet glaciers in Greenland. Our workflow achieves high accuracy and mimics human visual performance, potentially providing a useful tool to monitor glacier change and further understand the impacts of climate change in complex glacial settings.
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Short summary
Supraglacial drainage systems mediate meltwater transport over ice shelves and may influence their stability. Our mapping of Nivlisen Ice Shelf from satellite imagery shows significant variation in interannual and seasonal drainage extent. During warm summers, channels become increasingly connected, redistributing meltwater from high to low elevations across the ice shelf. Channel location is controlled by ice shelf structure, and annual extent is correlated with regional air temperature.
Supraglacial drainage systems mediate meltwater transport over ice shelves and may influence...
