Results 71 to 80 of about 3,604 (203)
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 +3 more
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Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract The Siple Coast region of West Antarctica is known for its fast flowing, topographically unconstrained ice streams that evolve due to subglacial conditions. In this work, we analyze the nature of the Siple Coast subglacial hydrologic system and its interactions with the ice sheet using two‐way coupled subglacial hydrology and ice flow modeling.
Koi McArthur +2 more
wiley +1 more source
Satellite Mapping of the Moulin Distribution Across the Entire Greenland Ice Sheet
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract Moulins drain meltwater from the surface of the Greenland Ice Sheet (GrIS), affecting subglacial hydrology. However, the moulin distribution across the entire GrIS remains unclear. Using 10‐m Sentinel‐2 imagery from the summer of 2019, we manually mapped GrIS‐wide major moulins, excluding undetectable minor moulins.
Yuhan Wang +5 more
wiley +1 more source
Tracing Particle Paths in the Antarctic Ice Sheet [PDF]
Journal of Glaciology, 1981 Abstract A layer of moraine within the Antarctic ice sheet has been detected in the course of airborne radar ice soundings. The moraine was injected at the margin of the ice and can serve as a tracer to pick out a particle path within the ice.
openaire +2 more sources
Competing climate feedbacks of ice sheet freshwater discharge in a warming world
Nature CommunicationsFreshwater discharge from ice sheets induces surface atmospheric cooling and subsurface ocean warming, which are associated with negative and positive feedbacks respectively. However, uncertainties persist regarding these feedbacks’ relative strength and
Dawei Li +3 more
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First Assessment of ICESat‐2 Summer Sea Ice Freeboard With Airborne Validation
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract ICESat‐2 has demonstrated solid performance in retrieving sea ice freeboard during winter, when sea ice surface types are well‐defined and leads provide reliable sea surface height references. Summer retrievals are challenging because melt ponds are not explicitly distinguished in the ATL07 surface classification and may be identified as ice ...
Ellen M. Buckley +6 more
wiley +1 more source
Geophysical Research LettersCoupled climate‐ice‐sheet modeling is still in its developing stage, and feedback processes between ice sheets and climate are still not yet fully understood.
Pierre Testorf +3 more
doaj +1 more source
Ecology and Evolution, Volume 16, Issue 8, August 2026.We evaluated adaptation to torpor and hibernation in the genus Dromiciops by comparing it with both torpid and non‐torpid marsupials, and investigated divergent selection signals between its two species. For the ancestral node, we identified positive selection in the genes PFKFB2, LAMP3, OTX1, and RAPSN, alongside an enrichment of pathways potentially ...
Elisa Gonzalez‐Ugalde +7 more
wiley +1 more source
State of Balance of the Ice Sheet in the Antarctic Peninsula [PDF]
Annals of Glaciology, 1982 Data from ice rises on the east coast of the Antarctic Peninsula can be interpreted as showing that the ice is thinning at rates of up 0.5 m a−1. However, a level line between two nunataks in Palmer Land showed no change in surface elevation over a period of 5 a.
openaire +2 more sources
Comparison of calibration methods of a PICO basal ice shelf melt module implemented in the GRISLI v2.0 ice sheet model [PDF]
Geoscientific Model DevelopmentUncertainties in future sea level rise are mainly due to uncertainties in Antarctic ice sheet projections. Indeed, modelling the future of the Antarctic ice sheet presents many challenges.
M. Menthon +5 more
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