Results 1 to 10 of about 1,622 (202)

Distribution and dynamics of Greenland subglacial lakes [PDF]

Nature Communications, 2019
Subglacial lakes can influence basal hydrology and ice flow in Antarctica, but are poorly constrained in Greenland. Here the authors provide the first ice sheet-wide inventory of subglacial lakes beneath GrIS, including 54 uncharted lakes.
J. S. Bowling, S. J. Livingstone, A. J. Sole, W. Chu   +3 more
doaj   +9 more sources

Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica [PDF]

The Cryosphere, 2020
Subglacial water plays an important role in ice sheet dynamics and stability. Subglacial lakes are often located at the onset of ice streams and have been hypothesised to enhance ice flow downstream by lubricating the ice–bed interface.
F. Napoleoni, S. S. R. Jamieson, N. Ross, M. J. Bentley, A. Rivera, A. Rivera, A. M. Smith, M. J. Siegert, G. J. G. Paxman, G. J. G. Paxman, G. Gacitúa, J. A. Uribe, R. Zamora, A. M. Brisbourne, D. G. Vaughan   +14 more
doaj   +9 more sources

Identification and Activity of Subglacial Lakes Beneath the Mercer and Whillans Ice Streams and Slessor Glacier

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The identification and activity monitoring of Antarctic subglacial lakes contribute to the analysis of the mass balance and sea level change. Remote sensing techniques, especially satellite altimetry, are ideal ways for identifying active subglacial ...
Weifeng Hao, Fei Li, Ma Chao
exaly   +3 more sources

Estimating effective pressures in active subglacial lakes with ICESat-2 satellite altimetry [PDF]

Journal of Glaciology
The difference between the ice and water pressures, or the effective pressure, influences water flow and sliding at the ice-bed interface. Effective pressure is typically quantified with subglacial hydrology models because direct measurements of the ...
Aaron Stubblefield, Aleah Nicholson Sommers, Colin Meyer, Lauren Cristy Andrews   +3 more
doaj   +2 more sources

Detection of 85 new active subglacial lakes in Antarctica from a decade of CryoSat-2 data [PDF]

Nature Communications
Subglacial lake activity influences ice sheet flow, grounding line discharge and ice shelf basal melting. Although 146 active subglacial lakes have been detected in Antarctica via ice surface elevation change associated with their activity, only 36 fill ...
Sally F. Wilson, Anna E. Hogg, Richard Rigby, Noel Gourmelen, Isabel Nias, Thomas Slater   +5 more
doaj   +2 more sources

Monitoring the Hydrological Activities of Antarctic Subglacial Lakes Using CryoSat-2 and ICESat-2 Altimetry Data

Remote Sensing, 2022
Monitoring the hydrological activities of subglacial lakes is critical to understanding the subglacial hydrological system and evaluating the internal mass changes of the Antarctic ice sheet.
Baojun Zhang, Weifeng Hao, Fan Yi
exaly   +3 more sources

On the factors and the degree of their effect on subglacial melt and changes in the state of Antarctic subglacial lakes

Arctic, Antarctic, and Alpine Research
This study presents the results of mathematical modeling of the degree of effects of various characteristics on basal conditions in Antarctica. The model is based on the numerical solution of the one-dimensional Stefan problem.
, Gang Qiao, Alina Boronina
exaly   +3 more sources

Dynamics of Active Subglacial Lakes in Recovery Ice Stream [PDF]

Journal of Geophysical Research F: Earth Surface, 2018
Mathieu Morlighem, Sophie Nowicki, Beata Csathó   +2 more
exaly   +2 more sources

Subglacial lake activity beneath the ablation zone of the Greenland Ice Sheet [PDF]

The Cryosphere, 2023
Hydrologically active subglacial lakes can drain large volumes of water and sediment along subglacial pathways, affecting the motion and mass balance of ice masses and impacting downstream sediment dynamics.
Y. Fan, Y. Fan, Y. Fan, C.-Q. Ke, C.-Q. Ke, C.-Q. Ke, X. Shen, X. Shen, X. Shen, Y. Xiao, Y. Xiao, Y. Xiao, S. J. Livingstone, A. J. Sole   +13 more
doaj   +1 more source

AN AUTOMATIC EXTRACTION METHOD FOR ANTARCTIC SUBGLACIAL LAKE BASED ON RADIO ECHO SOUNDING DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Detection of subglacial lakes and interpretation their hydrological connectivity is of great importance to understanding the mass balance of Antarctic ice sheet.
D. Wang, D. Wang, T. Feng, T. Feng, T. Hao, T. Hao, R. Li, R. Li   +7 more
doaj   +1 more source