Results 31 to 40 of about 217,627 (348)
Modelling dynamic ice-sheet boundaries and grounding line migration using the level set method
Journal of Glaciology, 2020 Computing predictions of future sea level that include well-defined uncertainty bounds requires models that are capable of robustly simulating the evolution of ice sheets and glaciers.
M. Alamgir Hossain +2 more
doaj +1 more source
Ice velocity changes in the Ross and Ronne sectors observed using satellite radar data from 1997 and 2009 [PDF]
The Cryosphere, 2012 We report changes in ice velocity of a 6.5 million km<sup>2</sup> region around South Pole encompassing the Filchner-Ronne and Ross Ice Shelves and a significant portion of the ice streams and glaciers that constitute their catchment areas ...
B. Scheuchl, J. Mouginot, E. Rignot
doaj +1 more source
Annals of Glaciology, 2023 Upernavik Isstrøm, the largest contributor to sea-level rise in northwest Greenland, has experienced complex and contrasting ice-flow-speed changes across its five outlets over the last two decades.
Kelsey M. Voss +3 more
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Interaction and Variability of Ice Streams under a Triple-Valued Sliding Law and Non-Newtonian Rheology [PDF]
, 2014 Ice streams are regions of fast flowing glacier ice that transport a significant portion of the total ice flux from present ice sheets. The flow pattern of ice streams can vary both temporally and spatially. In particular, ice streams can become stagnant
Sayag, Roiy, Tziperman, Eli
core +2 more sources
Stream hydrology controls on ice cliff evolution and survival on debris-covered glaciers [PDF]
Earth Surface DynamicsIce cliffs are melt hot spots that contribute disproportionately to melt on debris-covered glaciers. In this study, we investigate the impact of supraglacial stream hydrology on ice cliffs using in situ and remote sensing observations, streamflow ...
E. Petersen +3 more
doaj +1 more source
The role of ice stream dynamics in deglaciation [PDF]
, 2016 Since the mid-Pleistocene transition, deglaciation has occurred only after ice sheets have grown large while experiencing several precession and obliquity cycles, indicating that large ice sheets are more sensitive to Milankovitch forcing than small ice ...
Robel, Alexander A., Tziperman, Eli
core +1 more source
Sensitivity of Heinrich-type ice-sheet surge characteristics to boundary forcing perturbations [PDF]
Climate of the Past, 2023 Heinrich-type ice-sheet surges are one of the prominent signals of glacial climate variability. They are characterised as abrupt, quasi-periodic episodes of ice-sheet instabilities during which large numbers of icebergs are released from the Laurentide ...
C. Schannwell +3 more
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Centurial‐millenial ice‐rafted debris pulses from ablating marine ice sheets [PDF]
, 2001 We use an ice‐sheet model to show that (i) margins of marine ice‐sheets can be expected to be frozen to the bed, except where ice‐streams discharge; (ii) 20–50km retreats induced by ablation rates of 2 m/yr provide sufficient debris flux through the ...
Hindmarsh, Richard C.A., Jenkins, Adrian
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Thermal controls on ice stream shear margins
Journal of Glaciology, 2021 Ice stream discharge responds to a balance between gravity, basal friction and lateral drag. Appreciable viscous heating occurs in shear margins between ice streams and adjacent slow-moving ice ridges, altering the temperature-dependent viscosity ...
Pierce Hunter +4 more
doaj +1 more source
Tidal controls on the flow of ice streams [PDF]
, 2016 The flow of many Antarctic ice streams is known to be significantly influenced by tides. In the past, modeling studies have implemented the tidal forces acting on a coupled ice stream/ice shelf system in a number of different ways, but the consequences ...
Anandakrishnan +22 more
core +2 more sources