Results 21 to 30 of about 24,049 (264)
Bathymetric and oceanic controls on Abbot Ice Shelf thickness and stability [PDF]
The Cryosphere, 2014 Ice shelves play key roles in stabilizing Antarctica's ice sheets, maintaining its high albedo and returning freshwater to the Southern Ocean. Improved data sets of ice shelf draft and underlying bathymetry are important for assessing ocean–ice ...
J. R. Cochran +3 more
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Ice-Shelf Melting Around Antarctica [PDF]
Science, 2013 Major Meltdown The ice shelves and floating ice tongues that surround Antarctica cover more than 1.5 million square kilometers—approximately the size of the entire Greenland Ice Sheet. Conventional wisdom has held that ice shelves around Antarctica lose mass mostly by iceberg calving, but recently it has become increasingly clear
Rignot, E +3 more
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Past ice sheet–seabed interactions in the northeastern Weddell Sea embayment, Antarctica [PDF]
The Cryosphere, 2020 The Antarctic ice sheet extent in the Weddell Sea embayment (WSE) during the Last Glacial Maximum (LGM; ca. 19–25 calibrated kiloyears before present, ka cal BP) and its subsequent retreat from the shelf are poorly constrained, with two ...
J. E. Arndt +7 more
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Modelling the influence of marine ice on the dynamics of an idealised ice shelf
Journal of Glaciology, 2023 Understanding the dynamic behaviour of ice shelves, specifically the controls on their ability to buttress the flow of ice into the ocean, is critical for predicting future ice-sheet contributions to sea level rise.
Lisa Craw +4 more
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Ice Island Calvings and Ice Shelf Changes, Milne Ice Shelf and Ayles Ice Shelf, Ellesmere Island, N.W.T. [PDF]
ARCTIC, 1986 Analysis of vertical air photographs taken in 1959 and 1974 reveals that a total of 48 sq km, involving 3.3 cubic km, of ice calved from Milne and Ayles ice shelves between July 1959 and July 1974. In addition, Ayles Ice Shelf moved to about 5 km out of Ayles Fiord. It still occupied this exposed position in July 1984. The ice losses and movements have
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Modeling ice‐ocean interaction in ice‐shelf crevasses [PDF]
Journal of Geophysical Research: Oceans, 2014 AbstractOcean freezing within ice‐shelf basal crevasses could potentially act as a stabilizing influence on ice shelves; however, ice‐ocean interaction and ocean dynamics within these crevasses are as yet poorly understood. To this end, an idealized 2‐D model of an ice‐shelf basal crevasse has been developed using Fluidity, a finite‐element ocean model
Jordan, J.R. +4 more
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Response to Filchner–Ronne Ice Shelf cavity warming in a coupled ocean–ice sheet model – Part 1: The ocean perspective [PDF]
Ocean Science, 2017 The Regional Antarctic ice and Global Ocean (RAnGO) model has been developed to study the interaction between the world ocean and the Antarctic ice sheet. The coupled model is based on a global implementation of the Finite Element Sea-ice Ocean Model (
R. Timmermann, S. Goeller, S. Goeller
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Ice-Ocean Interaction On Ronne Ice Shelf, Antarctica [PDF]
Annals of Glaciology, 1990 A detailed glaciological study of Ronne Ice Shelf has been undertaken along a flowline extending from Rutford Ice Stream grounding line to the ice front. Measurements of velocity, surface elevation, ice thickness, surface temperature and accumulation rate have been made at a total of 28 sites; at 17 of these ice deformation rates are also known ...
Jenkins, Adrian, Doake, C. S. M.
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Formation of sea ice ponds from ice-shelf runoff, adjacent to the McMurdo Ice Shelf, Antarctica
Annals of Glaciology, 2020 Ponds that form on sea ice can cause it to thin or break-up, which can promote calving from an adjacent ice shelf. Studies of sea ice ponds have predominantly focused on Arctic ponds formed by in situ melting/ponding.
Grant J. Macdonald +2 more
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Ice-shelf Response to Ice-stream Discharge Fluctuations: II. Ideal Rectangular Ice Shelf [PDF]
Journal of Glaciology, 1988 AbstractAbstract. Ice-shelf thickness and velocity anomalies resulting from ice-stream discharge fluctuations are calculated for an ideal ice shelf fed by a single ice stream and confined within a rectangular coastal geometry. Ice-shelf response to periodic forcing is found to be linear (thickness and velocity anomalies oscillate at the forcing ...
Douglas R. Macayeal, Manfred A. Lange
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