Results 21 to 30 of about 713 (170)

Greenland subglacial lakes detected by radar [PDF]

open access: yesGeophysical Research Letters, 2013
AbstractSubglacial lakes are an established and important component of the basal hydrological system of the Antarctic ice sheets, but none have been reported from Greenland. Here we present airborne radio echo sounder (RES) measurements that provide the first clear evidence for the existence of subglacial lakes in Greenland.
Steven J Palmer   +2 more
exaly   +3 more sources

Subglacial lakes and jökulhlaups in Iceland

open access: yesGlobal and Planetary Change, 2003
Active volcanoes and hydrothermal systems underlie ice caps in Iceland. Glacier-volcano interactions produce meltwater that either drains toward the glacier margin or accumulates in subglacial lakes. Accumulated meltwater drains periodically in jokulhlaups from the subglacial lakes and occasionally during volcanic eruptions.
Helgi Björnsson
exaly   +2 more sources

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

open access: yesArctic, 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.
Alina Boronina, , Gang Qiao
exaly   +3 more sources

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

open access: yesJournal of Geophysical Research F: Earth Surface, 2018
Christine F Dow   +2 more
exaly   +2 more sources

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

open access: yesThe 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   +13 more
doaj   +1 more source

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

open access: yesThe 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   +7 more
doaj   +1 more source

Detecting and Searching for subglacial lakes through airborne radio-echo sounding in Princess Elizabeth Land (PEL), Antarctica [PDF]

open access: yesE3S Web of Conferences, 2020
Over 400 subglacial lakes were discovered in Antarctica through radio-echo sounding (RES) method and remote sensing. Subglacial lakes have significance in lubricating ice-bedrock interface and enhancing ice flow.
Cui Xiangbin   +3 more
doaj   +1 more source

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

open access: yesThe 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   +3 more
doaj   +1 more source

Drainage and refill of an Antarctic Peninsula subglacial lake reveal an active subglacial hydrological network [PDF]

open access: yesThe Cryosphere, 2022
The presence of subglacial lakes and subglacial hydrological networks under the East and West Antarctic ice sheets is now relatively well understood, whilst their influence on ice dynamics is the subject of ongoing research.
D. A. Hodgson   +4 more
doaj   +1 more source

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