Results 11 to 20 of about 257,875 (187)

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   +12 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   +8 more sources

Deep clustering in subglacial radar reflectance reveals subglacial lakes [PDF]

The Cryosphere
Ice-penetrating radar (IPR) imaging is a valuable tool for observing the internal structure and bottom of ice sheets. Subglacial water bodies, also known as subglacial lakes, generally appear as distinct, bright, flat, and continuous reflections in IPR ...
S. Dong, S. Dong, S. Dong, S. Dong, L. Fu, X. Tang, X. Tang, Z. Li, X. Chen   +8 more
doaj   +4 more sources

Constraints on Subglacial Melt Fluxes From Observations of Active Subglacial Lake Recharge

Journal of Glaciology, 2023
Active subglacial lakes provide a rare glimpse of the subglacial environment and hydrological processes at play. Several studies contributed to establishing active subglacial lake inventories and document lake drainage and connection, but few focused on ...
Martin G. Wearing, Mauro Werder, Noel Gourmelen   +2 more
exaly   +7 more sources

Assessing the Subglacial Lake Coverage of Antarctica [PDF]

Annals of Glaciology, 2016
Lakes beneath the Antarctic Ice Sheet are known to decrease traction at the ice base and therefore can have a great impact on ice dynamics. However, the total extent of Antarctic subglacial lakes is still unknown.
Klaus Grosfeld, Malte Thoma, Daniel Steinhage   +2 more
exaly   +5 more sources

Turbulent convection in subglacial lakes [PDF]

Journal of Fluid Mechanics, 2021
Abstract
Couston, Louis-Alexandre, Louis-Alexandre Couston   +1 more
openaire   +5 more sources

Potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets [PDF]

The Cryosphere, 2013
We use the Shreve hydraulic potential equation as a simplified approach to investigate potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets. We validate the method by demonstrating its ability
S. J. Livingstone, C. D. Clark, J. Woodward, J. Kingslake   +3 more
doaj   +3 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

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

Subglacial lakes.

, 2012
This chapter describes the geographic range, history and distribution of subglacial lakes. The extreme characteristics as well as the predicted diversity and community composition of life in subglacial lakes are discussed.
D. A. Pearce, Pearce, David, Pearce, David A.   +2 more
openaire   +3 more sources