Articles | Volume 16, issue 12
https://doi.org/10.5194/tc-16-4797-2022
© Author(s) 2022. 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-16-4797-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
30 Nov 2022
Research article |
| 30 Nov 2022
| 30 Nov 2022
Drainage and refill of an Antarctic Peninsula subglacial lake reveal an active subglacial hydrological network
British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3
0ET, UK
Tom A. Jordan
British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3
0ET, UK
Neil Ross
School of Geography, Politics and Sociology, Newcastle University, Claremont Road, Newcastle Upon Tyne, NE1 7RU,
UK
Teal R. Riley
British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3
0ET, UK
Peter T. Fretwell
British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3
0ET, UK
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The Cryosphere, 13, 2789–2796, https://doi.org/10.5194/tc-13-2789-2019, https://doi.org/10.5194/tc-13-2789-2019, 2019
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Agathe Lisé-Pronovost, Michael-Shawn Fletcher, Tom Mallett, Michela Mariani, Richard Lewis, Patricia S. Gadd, Andy I. R. Herries, Maarten Blaauw, Hendrik Heijnis, Dominic A. Hodgson, and Joel B. Pedro
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Dominic A. Hodgson, Tom A. Jordan, Jan De Rydt, Peter T. Fretwell, Samuel A. Seddon, David Becker, Kelly A. Hogan, Andrew M. Smith, and David G. Vaughan
The Cryosphere, 13, 545–556, https://doi.org/10.5194/tc-13-545-2019, https://doi.org/10.5194/tc-13-545-2019, 2019
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Hafeez Jeofry, Neil Ross, Hugh F. J. Corr, Jilu Li, Mathieu Morlighem, Prasad Gogineni, and Martin J. Siegert
Earth Syst. Sci. Data, 10, 711–725, https://doi.org/10.5194/essd-10-711-2018, https://doi.org/10.5194/essd-10-711-2018, 2018
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Angus Atkinson, Simeon L. Hill, Evgeny A. Pakhomov, Volker Siegel, Ricardo Anadon, Sanae Chiba, Kendra L. Daly, Rod Downie, Sophie Fielding, Peter Fretwell, Laura Gerrish, Graham W. Hosie, Mark J. Jessopp, So Kawaguchi, Bjørn A. Krafft, Valerie Loeb, Jun Nishikawa, Helen J. Peat, Christian S. Reiss, Robin M. Ross, Langdon B. Quetin, Katrin Schmidt, Deborah K. Steinberg, Roshni C. Subramaniam, Geraint A. Tarling, and Peter Ward
Earth Syst. Sci. Data, 9, 193–210, https://doi.org/10.5194/essd-9-193-2017, https://doi.org/10.5194/essd-9-193-2017, 2017
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Louise C. Sime, Dominic Hodgson, Thomas J. Bracegirdle, Claire Allen, Bianca Perren, Stephen Roberts, and Agatha M. de Boer
Clim. Past, 12, 2241–2253, https://doi.org/10.5194/cp-12-2241-2016, https://doi.org/10.5194/cp-12-2241-2016, 2016
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K. C. Rose, N. Ross, T. A. Jordan, R. G. Bingham, H. F. J. Corr, F. Ferraccioli, A. M. Le Brocq, D. M. Rippin, and M. J. Siegert
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A. P. Wright, A. M. Le Brocq, S. L. Cornford, R. G. Bingham, H. F. J. Corr, F. Ferraccioli, T. A. Jordan, A. J. Payne, D. M. Rippin, N. Ross, and M. J. Siegert
The Cryosphere, 8, 2119–2134, https://doi.org/10.5194/tc-8-2119-2014, https://doi.org/10.5194/tc-8-2119-2014, 2014
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The Cryosphere, 8, 15–24, https://doi.org/10.5194/tc-8-15-2014, https://doi.org/10.5194/tc-8-15-2014, 2014
P. Fretwell, H. D. Pritchard, D. G. Vaughan, J. L. Bamber, N. E. Barrand, R. Bell, C. Bianchi, R. G. Bingham, D. D. Blankenship, G. Casassa, G. Catania, D. Callens, H. Conway, A. J. Cook, H. F. J. Corr, D. Damaske, V. Damm, F. Ferraccioli, R. Forsberg, S. Fujita, Y. Gim, P. Gogineni, J. A. Griggs, R. C. A. Hindmarsh, P. Holmlund, J. W. Holt, R. W. Jacobel, A. Jenkins, W. Jokat, T. Jordan, E. C. King, J. Kohler, W. Krabill, M. Riger-Kusk, K. A. Langley, G. Leitchenkov, C. Leuschen, B. P. Luyendyk, K. Matsuoka, J. Mouginot, F. O. Nitsche, Y. Nogi, O. A. Nost, S. V. Popov, E. Rignot, D. M. Rippin, A. Rivera, J. Roberts, N. Ross, M. J. Siegert, A. M. Smith, D. Steinhage, M. Studinger, B. Sun, B. K. Tinto, B. C. Welch, D. Wilson, D. A. Young, C. Xiangbin, and A. Zirizzotti
The Cryosphere, 7, 375–393, https://doi.org/10.5194/tc-7-375-2013, https://doi.org/10.5194/tc-7-375-2013, 2013
Related subject area
Discipline: Ice sheets | Subject: Subglacial Processes
Improved monitoring of subglacial lake activity in Greenland
Basal conditions of Denman Glacier from glacier hydrology and ice dynamics modeling
Mapping age and basal conditions of ice in the Dome Fuji region, Antarctica, by combining radar internal layer stratigraphy and flow modeling
Towards modelling of corrugation ridges at ice-sheet grounding lines
Compensating errors in inversions for subglacial bed roughness: same steady state, different dynamic response
Filling and drainage of a subglacial lake beneath the Flade Isblink ice cap, northeast Greenland
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Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica
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Under the right topographic and hydrological conditions, lakes may form beneath the large ice sheets. Some of these subglacial lakes are active, meaning that they periodically drain and refill. When a subglacial lake drains rapidly, it may cause the ice surface above to collapse, and here we investigate how to improve the monitoring of active subglacial lakes in Greenland by monitoring how their associated collapse basins change over time.
Koi McArthur, Felicity S. McCormack, and Christine F. Dow
The Cryosphere, 17, 4705–4727, https://doi.org/10.5194/tc-17-4705-2023, https://doi.org/10.5194/tc-17-4705-2023, 2023
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Using subglacial hydrology model outputs for Denman Glacier, East Antarctica, we investigated the effects of various friction laws and effective pressure inputs on ice dynamics modeling over the same glacier. The Schoof friction law outperformed the Budd friction law, and effective pressure outputs from the hydrology model outperformed a typically prescribed effective pressure. We propose an empirical prescription of effective pressure to be used in the absence of hydrology model outputs.
Zhuo Wang, Ailsa Chung, Daniel Steinhage, Frédéric Parrenin, Johannes Freitag, and Olaf Eisen
The Cryosphere, 17, 4297–4314, https://doi.org/10.5194/tc-17-4297-2023, https://doi.org/10.5194/tc-17-4297-2023, 2023
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We combine radar-based observed internal layer stratigraphy of the ice sheet with a 1-D ice flow model in the Dome Fuji region. This results in maps of age and age density of the basal ice, the basal thermal conditions, and reconstructed accumulation rates. Based on modeled age we then identify four potential candidates for ice which is potentially 1.5 Myr old. Our map of basal thermal conditions indicates that melting prevails over the presence of stagnant ice in the study area.
Kelly A. Hogan, Katarzyna L. P. Warburton, Alastair G. C. Graham, Jerome A. Neufeld, Duncan R. Hewitt, Julian A. Dowdeswell, and Robert D. Larter
The Cryosphere, 17, 2645–2664, https://doi.org/10.5194/tc-17-2645-2023, https://doi.org/10.5194/tc-17-2645-2023, 2023
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Delicate sea floor ridges – corrugation ridges – that form by tidal motion at Antarctic grounding lines record extremely fast retreat of ice streams in the past. Here we use a mathematical model, constrained by real-world observations from Thwaites Glacier, West Antarctica, to explore how corrugation ridges form. We identify
till extrusion, whereby deformable sediment is squeezed out from under the ice like toothpaste as it settles down at each low-tide position, as the most likely process.
Constantijn J. Berends, Roderik S. W. van de Wal, Tim van den Akker, and William H. Lipscomb
The Cryosphere, 17, 1585–1600, https://doi.org/10.5194/tc-17-1585-2023, https://doi.org/10.5194/tc-17-1585-2023, 2023
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The rate at which the Antarctic ice sheet will melt because of anthropogenic climate change is uncertain. Part of this uncertainty stems from processes occurring beneath the ice, such as the way the ice slides over the underlying bedrock.
Inversion methodsattempt to use observations of the ice-sheet surface to calculate how these sliding processes work. We show that such methods cannot fully solve this problem, so a substantial uncertainty still remains in projections of sea-level rise.
Qi Liang, Wanxin Xiao, Ian Howat, Xiao Cheng, Fengming Hui, Zhuoqi Chen, Mi Jiang, and Lei Zheng
The Cryosphere, 16, 2671–2681, https://doi.org/10.5194/tc-16-2671-2022, https://doi.org/10.5194/tc-16-2671-2022, 2022
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Using multi-temporal ArcticDEM and ICESat-2 altimetry data, we document changes in surface elevation of a subglacial lake basin from 2012 to 2021. The long-term measurements show that the subglacial lake was recharged by surface meltwater and that a rapid drainage event in late August 2019 induced an abrupt ice velocity change. Multiple factors regulate the episodic filling and drainage of the lake. Our study also reveals ~ 64 % of the surface meltwater successfully descended to the bed.
Anja Rutishauser, Donald D. Blankenship, Duncan A. Young, Natalie S. Wolfenbarger, Lucas H. Beem, Mark L. Skidmore, Ashley Dubnick, and Alison S. Criscitiello
The Cryosphere, 16, 379–395, https://doi.org/10.5194/tc-16-379-2022, https://doi.org/10.5194/tc-16-379-2022, 2022
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Recently, a hypersaline subglacial lake complex was hypothesized to lie beneath Devon Ice Cap, Canadian Arctic. Here, we present results from a follow-on targeted aerogeophysical survey. Our results support the evidence for a hypersaline subglacial lake and reveal an extensive brine network, suggesting more complex subglacial hydrological conditions than previously inferred. This hypersaline system may host microbial habitats, making it a compelling analog for bines on other icy worlds.
Huw J. Horgan, Laurine van Haastrecht, Richard B. Alley, Sridhar Anandakrishnan, Lucas H. Beem, Knut Christianson, Atsuhiro Muto, and Matthew R. Siegfried
The Cryosphere, 15, 1863–1880, https://doi.org/10.5194/tc-15-1863-2021, https://doi.org/10.5194/tc-15-1863-2021, 2021
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The grounding zone marks the transition from a grounded ice sheet to a floating ice shelf. Like Earth's coastlines, the grounding zone is home to interactions between the ocean, fresh water, and geology but also has added complexity and importance due to the overriding ice. Here we use seismic surveying – sending sound waves down through the ice – to image the grounding zone of Whillans Ice Stream in West Antarctica and learn more about the nature of this important transition zone.
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.
Slawek M. Tulaczyk and Neil T. Foley
The Cryosphere, 14, 4495–4506, https://doi.org/10.5194/tc-14-4495-2020, https://doi.org/10.5194/tc-14-4495-2020, 2020
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Much of what we know about materials hidden beneath glaciers and ice sheets on Earth has been interpreted using radar reflection from the ice base. A common assumption is that electrical conductivity of the sub-ice materials does not influence the reflection strength and that the latter is controlled only by permittivity, which depends on the fraction of water in these materials. Here we argue that sub-ice electrical conductivity should be generally considered when interpreting radar records.
Alex Burton-Johnson, Ricarda Dziadek, and Carlos Martin
The Cryosphere, 14, 3843–3873, https://doi.org/10.5194/tc-14-3843-2020, https://doi.org/10.5194/tc-14-3843-2020, 2020
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The Antarctic ice sheet is the largest source for sea level rise. However, one key control on ice sheet flow remains poorly constrained: the effect of heat from the rocks beneath the ice sheet (known as
geothermal heat flow). Although this may not seem like a lot of heat, beneath thick, slow ice this heat can control how well the ice flows and can lead to melting of the ice sheet. We discuss the methods used to estimate this heat, compile existing data, and recommend future research.
Silje Smith-Johnsen, Basile de Fleurian, Nicole Schlegel, Helene Seroussi, and Kerim Nisancioglu
The Cryosphere, 14, 841–854, https://doi.org/10.5194/tc-14-841-2020, https://doi.org/10.5194/tc-14-841-2020, 2020
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The Northeast Greenland Ice Stream (NEGIS) drains a large part of Greenland and displays fast flow far inland. However, the flow pattern is not well represented in ice sheet models. The fast flow has been explained by abnormally high geothermal heat flux. The heat melts the base of the ice sheet and the water produced may lubricate the bed and induce fast flow. By including high geothermal heat flux and a hydrology model, we successfully reproduce NEGIS flow pattern in an ice sheet model.
Michael A. Cooper, Thomas M. Jordan, Dustin M. Schroeder, Martin J. Siegert, Christopher N. Williams, and Jonathan L. Bamber
The Cryosphere, 13, 3093–3115, https://doi.org/10.5194/tc-13-3093-2019, https://doi.org/10.5194/tc-13-3093-2019, 2019
Robert D. Larter, Kelly A. Hogan, Claus-Dieter Hillenbrand, James A. Smith, Christine L. Batchelor, Matthieu Cartigny, Alex J. Tate, James D. Kirkham, Zoë A. Roseby, Gerhard Kuhn, Alastair G. C. Graham, and Julian A. Dowdeswell
The Cryosphere, 13, 1583–1596, https://doi.org/10.5194/tc-13-1583-2019, https://doi.org/10.5194/tc-13-1583-2019, 2019
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We present high-resolution bathymetry data that provide the most complete and detailed imagery of any Antarctic palaeo-ice stream bed. These data show how subglacial water was delivered to and influenced the dynamic behaviour of the ice stream. Our observations provide insights relevant to understanding the behaviour of modern ice streams and forecasting the contributions that they will make to future sea level rise.
Cited articles
Abram, N. J., Mulvaney, R., W.Wolff, E., Triest, J., Kipfstuhl, S., Trusel,
L. D., Vimeux, F., Fleet, L., and Arrowsmith, C.: Acceleration of snow melt
in an Antarctic Peninsula ice core during the twentieth century, Nat.
Geosci., 6, 404–411, 2013.
Aitkenhead, N.: An Ice Caldera in North-east Graham Land, Brit. Antarct. Surv. B., 1, 9–15, 1963.
Arnold, E., Leuschen, C., Rodriguez-Morales, F., Li, J., Paden, J., Hale,
R., and Keshmiri, S.: CReSIS airborne radars and platforms for ice and
snow sounding, Ann. Glaciol., 61, 58–67, https://doi.org/10.1017/aog.2019.37,
2020.
Ashmore, D. W. and Bingham, R. G.: Antarctic subglacial hydrology: current
knowledge and future challenges, Antarct. Sci., 26, 758–773,
10.1017/S0954102014000546, 2014.
Banwell, A. F., Datta, R. T., Dell, R. L., Moussavi, M., Brucker, L., Picard, G., Shuman, C. A., and Stevens, L. A.: The 32-year record-high surface melt in 2019/2020 on the northern George VI Ice Shelf, Antarctic Peninsula, The Cryosphere, 15, 909–925, https://doi.org/10.5194/tc-15-909-2021, 2021.
Bartholomew, I., Nienow, P., Sole, A., Mair, D., Cowton, T., and King, M.
A.: Short-term variability in Greenland Ice Sheet motion forced by
time-varying meltwater drainage: Implications for the relationship between
subglacial drainage system behavior and ice velocity, J. Geophys.
Res.-Earth Surf., 117, F03002, https://doi.org/10.1029/2011JF002220, 2012.
Benn, D. and Evans, D. J. A.: Glaciers and Glaciation, 2nd Routledge,
https://doi.org/10.4324/9780203785010, 2010.
Bindschadler, R., Scambos, T. A., Rott, H., Skvarca, P., and Vornberger, P.:
Ice dolines on Larsen Ice Shelf, Antarctica, Ann. Glaciol., 34,
283–290, https://doi.org/10.3189/172756402781817996, 2002.
Björnsson, H.: Subglacial lakes and jökulhlaups in Iceland, Global
Planet. Change, 35, 255–271, https://doi.org/10.1016/S0921-8181(02)00130-3, 2003.
Boronina, A., Popov, S., Pryakhina, G., Chetverova, A., Ryzhova, E., and
Grigoreva, S.: Formation of a large ice depression on Dålk Glacier
(Larsemann Hills, East Antarctica) caused by the rapid drainage of an
englacial cavity, J. Glaciol., 67, 1121–1136, https://doi.org/10.1017/jog.2021.58,
2021.
Bowling, J. S., Livingstone, S. J., Sole, A. J., and Chu, W.: Distribution
and dynamics of Greenland subglacial lakes, Nat. Commun., 10, 2810,
https://doi.org/10.1038/s41467-019-10821-w, 2019.
Boxall, K., Christie, F. D. W., Willis, I. C., Wuite, J., and Nagler, T.: Seasonal land-ice-flow variability in the Antarctic Peninsula, The Cryosphere, 16, 3907–3932, https://doi.org/10.5194/tc-16-3907-2022, 2022.
Capps, D. M., Rabus, B., Clague, J. J., and Shugar, D. H.: Identification
and characterization of alpine subglacial lakes using interferometric
synthetic aperture radar (InSAR): Brady Glacier, Alaska, USA, J.
Glaciol., 56, 861–870, https://doi.org/10.3189/002214310794457254, 2010.
Clarke, G. K. C.: Hydraulics of subglacial outburst floods: new insights
from the Spring–Hutter formulation, J. Glaciol., 49, 299–313,
https://doi.org/10.3189/172756503781830728, 2003.
Cooper, A. P. R.: Historical observations of Prince Gustav Ice Shelf, Polar
Record, 33, 285–294, https://doi.org/10.1017/S0032247400025389, 1997.
DeConto, R. M., Pollard, D., Alley, R. B., Velicogna, I., Gasson, E., Gomez,
N., Sadai, S., Condron, A., Gilford, D. M., Ashe, E. L., Kopp, R. E., Li,
D., and Dutton, A.: The Paris Climate Agreement and future sea-level rise
from Antarctica, Nature, 593, 83–89, https://doi.org/10.1038/s41586-021-03427-0, 2021.
Glen, J. W.: The Stability of Ice-Dammed Lakes and other Water-Filled Holes
in Glaciers, J. Glaciol., 2, 316–318, https://doi.org/10.3189/S0022143000025132,
1954.
Hewitt, I. J.: Seasonal changes in ice sheet motion due to melt water
lubrication, Earth Planet. Sc. Lett., 371–372, 16–25, https://doi.org/10.1016/j.epsl.2013.04.022, 2013.
Hodgson, D. A., Roberts, S. J., Bentley, M. J., Carmichael, E. L., Smith, J.
A., Verleyen, E., Vyverman, W., Geissler, P., Leng, M. J., and Sanderson, D.
C. W.: Exploring former subglacial Hodgson Lake. Paper II: Palaeolimnology,
Quaternary Sci. Rev., 28, 2310–2325,
https://doi.org/10.1016/j.quascirev.2009.04.014, 2009a.
Hodgson, D. A., Roberts, S. J., Bentley, M. J., Smith, J. A., Johnson, J.
S., Verleyen, E., Vyverman, W., Hodson, A. J., Leng, M. J., Cziferszky, A.,
Fox, A. J., and Sanderson, D. C. W.: Exploring former subglacial Hodgson
Lake. Paper I: Site description, geomorphology and limnology, Quaternary
Sci. Rev., 28, 2295–2309, https://doi.org/10.1016/j.quascirev.2009.04.011, 2009b.
Howat, I. M., Porter, C., Noh, M. J., Smith, B. E., and Jeong, S.: Brief Communication: Sudden drainage of a subglacial lake beneath the Greenland Ice Sheet, The Cryosphere, 9, 103–108, https://doi.org/10.5194/tc-9-103-2015, 2015.
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.
Jordan, T. and Robinson, C.: Rectified airborne Lidar data over Thwaites Glacier catchment between 1st January and 30th December 2019 (Version 1.0), NERC EDS UK Polar Data
Centre [data set],
https://doi.org/10.5285/6909792B-FADF-4DE6-AC2A-D32FA76A8339, 2022.
Joughin, I., Shean, D. E., Smith, B. E., and Dutrieux, P.: Grounding line
variability and subglacial lake drainage on Pine Island Glacier, Antarctica,
Geophys. Res. Lett., 43, 9093–9102, https://doi.org/10.1002/2016GL070259, 2016.
Kashani, A. G., Olsen, M. J., Parrish, C. E., and Wilson, N.: A Review of
LIDAR Radiometric Processing: From Ad Hoc Intensity Correction to Rigorous
Radiometric Calibration, Sensors (Basel), 15, 28099–28128,
https://doi.org/10.3390/s151128099, 2015.
Kingslake, J., Ely, J. C., Das, I., and Bell, R. E.: Widespread movement of
meltwater onto and across Antarctic ice shelves, Nature, 544, 349–352,
https://doi.org/10.1038/nature22049, 2017.
Koerner, R. M.: An ice caldera near Hope Bay, Trinity Peninsula, Graham
Land, Brit. Antarct. Surv. B., 3, 37–39, 1964.
Laffin, M. K., Zender, C. S., van Wessem, M., and Marinsek, S.: The role of föhn winds in eastern Antarctic Peninsula rapid ice shelf collapse, The Cryosphere, 16, 1369–1381, https://doi.org/10.5194/tc-16-1369-2022, 2022.
Lai, C.-Y., Kingslake, J., Wearing, M. G., Chen, P.-H. C., Gentine, P., Li,
H., Spergel, J. J., and van Wessem, J. M.: Vulnerability of Antarctica's ice
shelves to meltwater-driven fracture, Nature, 584, 574–578,
https://doi.org/10.1038/s41586-020-2627-8, 2020.
Lenaerts, J. T. M., Lhermitte, S., Drews, R., Ligtenberg, S. R. M., Berger,
S., Helm, V., Smeets, C. J. P. P., van d. Broeke, M. R., van de Berg, W. J.,
van Meijgaard, E., Eijkelboom, M., Eisen, O., and Pattyn, F.: Meltwater
produced by wind–albedo interaction stored in an East Antarctic ice shelf,
Nat. Clim. Change, 7, 58–62, https://doi.org/10.1038/nclimate3180, 2017.
Liang, Q., Xiao, W., Howat, I., Cheng, X., Hui, F., Chen, Z., Jiang, M., and Zheng, L.: Filling and drainage of a subglacial lake beneath the Flade Isblink ice cap, northeast Greenland, The Cryosphere, 16, 2671–2681, https://doi.org/10.5194/tc-16-2671-2022, 2022.
Livingstone, S. J., Sole, A. J., Storrar, R. D., Harrison, D., Ross, N., and Bowling, J.: Brief communication: Subglacial lake drainage beneath Isunguata Sermia, West Greenland: geomorphic and ice dynamic effects, The Cryosphere, 13, 2789–2796, https://doi.org/10.5194/tc-13-2789-2019, 2019.
Livingstone, S. J., Li, Y., Rutishauser, A., Sanderson, R. J., Winter, K.,
Mikucki, J. A., Björnsson, H., Bowling, J. S., Chu, W., Dow, C. F.,
Fricker, H. A., McMillan, M., Ng, F. S. L., Ross, N., Siegert, M. J.,
Siegfried, M., and Sole, A. J.: Subglacial lakes and their changing role in
a warming climate, Nat. Rev. Earth Environ., 3, 106–124,
https://doi.org/10.1038/s43017-021-00246-9, 2022.
Moore, J.: Ice blisters and ice dolines, J. Glaciol., 39, 714–716,
https://doi.org/10.3189/S002214300001666X, 1993.
Neckel, N., Franke, S., Helm, V., Drews, R., and Jansen, D.: Evidence of
Cascading Subglacial Water Flow at Jutulstraumen Glacier (Antarctica)
Derived From Sentinel-1 and ICESat-2 Measurements, Geophys. Res.
Lett., 48, e2021GL094472, https://doi.org/10.1029/2021GL094472, 2021.
Palmer, S., McMillan, M., and Morlighem, M.: Subglacial lake drainage
detected beneath the Greenland ice sheet, Nat. Commun., 6, 8408,
https://doi.org/10.1038/ncomms9408, 2015.
Pearce, D. A., Hodgson, D. A., Thorne, M. A. S., Burns, G., and Cockell, C.
S.: Preliminary Analysis of Life within a Former Subglacial Lake Sediment in
Antarctica, Diversity, 5, 680–702, https://doi.org/10.3390/d5030680, 2013.
Perren, B. B., Hodgson, D. A., Roberts, S. J., Sime, L., Van Nieuwenhuyze,
W., Verleyen, E., and Vyverman, W.: Southward migration of the Southern
Hemisphere westerly winds corresponds with warming climate over centennial
timescales, Commun. Earth Environ., 1, 58,
https://doi.org/10.1038/s43247-020-00059-6, 2020.
Reynolds, H. I., Gudmundsson, M. T., Högnadóttir, T., and Axelsson,
G.: Changes in Geothermal Activity at Bárdarbunga, Iceland, Following
the 2014–2015 Caldera Collapse, Investigated Using Geothermal System
Modeling, J. Geophys. Res.-Sol. Ea., 124, 8187–8204,
https://doi.org/10.1029/2018JB017290, 2019.
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.
Rivera, A., Uribe, J., Zamora, R., and Oberreuter, J.: Subglacial Lake CECs:
Discovery and in situ survey of a privileged research site in West
Antarctica, Geophys. Res. Lett., 42, 3944–3953, https://doi.org/10.1002/2015GL063390, 2015.
Scambos, T. A., Berthier, E., and Shuman, C. A.: The triggering of
subglacial lake drainage during rapid glacier drawdown: Crane Glacier,
Antarctic Peninsula, Ann. Glaciol., 52, 74–82,
https://doi.org/10.3189/172756411799096204, 2011.
Siegert, M. J., Carter, S., Tabacco, I., Popov, S., and Blakenship, D.: A
revised inventory of Antarctic subglacial lakes, Antarct. Sci., 17,
453–460, 2005.
Siegfried, M. R. and Fricker, H. A.: Thirteen years of subglacial lake
activity in Antarctica from multi-mission satellite altimetry, Ann.
Glaciol., 59, 42–55, https://doi.org/10.1017/aog.2017.36, 2018.
Smellie, J. L. and Hole, M. J.: Chapter 4.1a Antarctic Peninsula:
volcanology, Geological Society, London, Memoirs, 55, 305–325,
https://doi.org/10.1144/m55-2018-59, 2021.
Smellie, J. L., Pankhurst, R. J., Hole, M. J., and Thomson, J. W.: Age,
distribution and eruptive conditions of late Cenozoic alkaline volcanism in
the Antarctic Peninsula and eastern Ellsworth Land: a review, Brit. Antarct. Surv. B., 80, 21–49, 1988.
Smith, A. M., Woodward, J., Ross, N., Bentley, M. J., Hodgson, D. A.,
Siegert, M. J., and King, E. C.: Evidence for the long-term sedimentary
environment in an Antarctic subglacial lake, Earth Planet. Sc.
Lett., 504, 139–151, https://doi.org/10.1016/j.epsl.2018.10.011, 2018.
Stearns, L. A., Smith, B. E., and Hamilton, G. S.: Increased flow speed on a
large East Antarctic outlet glacier caused by subglacial floods, Nat.
Geosci., 1, 827–831, https://doi.org/10.1038/ngeo356, 2008.
Trusel, L. D., Frey, K. E., Das, S. B., Karnauskas, K. B., Kuipers Munneke,
P., van Meijgaard, E., and van den Broeke, M. R.: Divergent trajectories of
Antarctic surface melt under two twenty-first-century climate scenarios,
Nat. Geosci., 8, 927–932, https://doi.org/10.1038/ngeo2563, 2015.
Tuckett, P. A., Ely, J. C., Sole, A. J., Livingstone, S. J., Davison, B. J.,
Melchior van Wessem, J., and Howard, J.: Rapid accelerations of Antarctic
Peninsula outlet glaciers driven by surface melt, Nat. Commun., 10,
4311, https://doi.org/10.1038/s41467-019-12039-2, 2019.
Turner, J., Lu, H., White, I., King, J. C., Phillips, T., Hosking, J. S.,
Bracegirdle, T. J., Marshall, G. J., Mulvaney, R., and Deb, P.: Absence of
21st century warming on Antarctic Peninsula consistent with natural
variability, Nature, 535, 411–415, https://doi.org/10.1038/nature18645, 2016.
van den Broeke, M.: Strong surface melting preceded collapse of Antarctic
Peninsula ice shelf, Geophys. Res. Lett., 32, L12815, https://doi.org/10.1029/2005GL023247, 2005.
Warner, R. C., Fricker, H. A., Adusumilli, S., Arndt, P., Kingslake, J., and
Spergel, J. J.: Rapid Formation of an Ice Doline on Amery Ice Shelf, East
Antarctica, Geophys. Res. Lett., 48, e2020GL091095, https://doi.org/10.1029/2020GL091095, 2021.
Willis, M. J., Herried, B. G., Bevis, M. G., and Bell, R. E.: Recharge of a
subglacial lake by surface meltwater in northeast Greenland, Nature, 518,
223–227, https://doi.org/10.1038/nature14116, 2015.
Short summary
This paper describes the drainage (and refill) of a subglacial lake on the Antarctic Peninsula resulting in the collapse of the overlying ice into the newly formed subglacial cavity. It provides evidence of an active hydrological network under the region's glaciers and close coupling between surface climate processes and the base of the ice.
This paper describes the drainage (and refill) of a subglacial lake on the Antarctic Peninsula...
