Active subglacial lakes and channelized water flow beneath the Kamb Ice Stream [PDF]
We identify two previously unknown subglacial lakes beneath the stagnated trunk of the Kamb Ice Stream (KIS). Rapid fill-drain hydrologic events over several months are inferred from surface height changes measured by CryoSat-2 altimetry and indicate ...
B.-H. Kim +4 more
doaj +1 more source
DYNAMICS OF ICE SHEET SURFACE OVER SUBGLACIAL LAKES IN ANTARCTICA
Progress in understanding cascades of subglacial lakes inAntarcticaand surface dynamics was derived using satellite laser altimetry measurements ICESat. The morphological and dynamical pattern troughs and swells indicate subglacial lakes and positions of
V. M. Kotlyakov +4 more
doaj +1 more source
Geology and environments of subglacial Lake Vostok [PDF]
The reconstruction of the geological (tectonic) structure and environments of subglacial Lake Vostok is based on geophysical surveys and the study of mineral particles found in cores of accreted ice and frozen lake water (sampled after the lake was unsealed).
German L, Leitchenkov +3 more
openaire +2 more sources
Exploring subglacial Antarctic lake environments [PDF]
While subglacial lakes have been suspected, and speculated about, for more than 50 years, recent analyses of historical and new data have shown that liquid water environments are common beneath the vast Antarctic Ice Sheet. Airborne radar surveys have now documented more than 145 subglacial lakes, the largest being Lake Vostok located 4 km beneath the ...
Priscu, J. C. +9 more
openaire +4 more sources
Physiological Ecology of Microorganisms in Subglacial Lake Whillans [PDF]
Subglacial microbial habitats are widespread in glaciated regions of our planet. Some of these environments have been isolated from the atmosphere and from sunlight for many thousands of years. Consequently, ecosystem processes must rely on energy gained from the oxidation of inorganic substrates or detrital organic matter.
Trista J Vick-Majors +13 more
openaire +3 more sources
Active subglacial lakes in the Canadian Arctic identified by multi-annual ice elevation changes [PDF]
Subglacial lakes influence glacier hydrology, dynamics, and mass balance; however, they are poorly documented outside the polar ice sheets. Here we use high-resolution digital elevation models during 2011–2021 and regression analysis to characterize ...
W. Zheng +4 more
doaj +1 more source
Antarctic subglacial lakes drain through sediment-floored canals: theory and model testing on real and idealized domains [PDF]
Over the past decade, satellite observations of ice surface height have revealed that active subglacial lake systems are widespread under the Antarctic Ice Sheet, including the ice streams. For some of these systems, additional observations of ice-stream
S. P. Carter +2 more
doaj +1 more source
Hydrodynamics and hydrogeochemistry of Werenskiold Glacier forefield, SW Spitsbergen [PDF]
In the 2008 ablation season, subglacial springs discharge, flow rate and profiling of the proglacial river, physical-chemical parameters (pH, temperature, electrical conductivity) and chemical composition (HCO3−, SO42−, Cl−, NO3−, NO2−, PO43−, Ca2+, Mg2+,
Magdalena Modelska, Sebastian Buczyński
doaj +1 more source
Brief communication: Subglacial lake drainage beneath Isunguata Sermia, West Greenland: geomorphic and ice dynamic effects [PDF]
We report three active subglacial lakes within 2 km of the lateral margin of Isunguata Sermia, West Greenland, identified by differencing time-stamped ArcticDEM strips.
S. J. Livingstone +5 more
doaj +1 more source
Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica [PDF]
In the 2016–2017 austral summer, the University of Texas Institute for Geophysics (UTIG) and the Korea Polar Research Institute (KOPRI) collaborated to perform a helicopter-based radar and laser altimeter survey of lower David Glacier with the goals of ...
L. E. Lindzey +13 more
doaj +1 more source

