Results 31 to 40 of about 7,235 (213)

Tectonically controlled subglacial lakes on the flanks of the Gamburtsev Subglacial Mountains, East Antarctica [PDF]

open access: yes, 2006
The morphology of surface lakes strongly influences their ecology and limnology (Wetzel, 2001). This morphology is a result of both the geologic processes that produce topographic basins and the regional climatic and local hydrologic processes that ...
Bell, Robin E.   +3 more
core   +2 more sources

A Ten-Year Record of Supraglacial Lake Evolution and Rapid Drainage in West Greenland Using an Automated Processing Algorithm for Multispectral Imagery [PDF]

open access: yes, 2013
The rapid drainage of supraglacial lakes introduces large pulses of meltwater to the subglacial environment and creates moulins, surface-to-bed conduits for future melt.
Andrews, L. C.   +7 more
core   +2 more sources

Geology and environments of subglacial Lake Vostok [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
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

Active subglacial lakes in the Canadian Arctic identified by multi-annual ice elevation changes [PDF]

open access: yesThe Cryosphere
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]

open access: yesThe Cryosphere, 2017
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

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

open access: yesRemote 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.
Yi Fan   +6 more
doaj   +1 more source

Hydrodynamics and hydrogeochemistry of Werenskiold Glacier forefield, SW Spitsbergen [PDF]

open access: yesPolish Polar Research, 2023
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]

open access: yesThe Cryosphere, 2019
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]

open access: yesThe Cryosphere, 2020
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

Modeling Antarctic subglacial lake filling and drainage cycles [PDF]

open access: yesThe Cryosphere, 2016
The growth and drainage of active subglacial lakes in Antarctica has previously been inferred from analysis of ice surface altimetry data. We use a subglacial hydrology model applied to a synthetic Antarctic ice stream to examine internal controls on the
C. F. Dow   +3 more
doaj   +1 more source

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