Results 21 to 30 of about 692 (179)

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

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

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

Physiological Ecology of Microorganisms in Subglacial Lake Whillans [PDF]

open access: yesFrontiers in Microbiology, 2016
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

Evidence of active subglacial lakes under a slowly moving coastal region of the Antarctic Ice Sheet [PDF]

open access: yesThe Cryosphere
Active subglacial lakes beneath the Antarctic Ice Sheet provide insights into the dynamic subglacial environment, with implications for ice-sheet dynamics and mass balance.
J. F. Arthur   +4 more
doaj   +1 more source

Drainage networks, lakes and water fluxes beneath the Antarctic ice sheet

open access: yesAnnals of Glaciology, 2016
Antarctica Bedmap2 datasets are used to calculate subglacial hydraulic potential and the area, depth and volume of hydraulic potential sinks. There are over 32 000 contiguous sinks, which can be thought of as predicted lakes.
Ian C. Willis   +4 more
doaj   +1 more source

The influence of a model subglacial lake on ice dynamics and internal layering [PDF]

open access: yesThe Cryosphere, 2016
As ice flows over a subglacial lake, the drop in bed resistance leads to an increase in ice velocities and a draw down of isochrones and cold ice. The ice surface flattens as it adjusts to the lack of resisting forces at the base. The rapid transition in
E. Gudlaugsson   +4 more
doaj   +1 more source

Deep Clustering in Radar Subglacial Reflector Reveals New Subglacial Lakes

open access: yes, 2023
Abstract. 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 images.
Sheng Dong   +4 more
openaire   +2 more sources

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