منابع مشابه
Ice flow of the Antarctic ice sheet.
We present a reference, comprehensive, high-resolution, digital mosaic of ice motion in Antarctica assembled from multiple satellite interferometric synthetic-aperture radar data acquired during the International Polar Year 2007 to 2009. The data reveal widespread, patterned, enhanced flow with tributary glaciers reaching hundreds to thousands of kilometers inland over the entire continent. Thi...
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Ice-sheet modelers tend to be more familiar with the Newtonian, vectorial formulation of continuum mechanics, in which the motion of an ice sheet or glacier is determined by the balance of stresses acting on the ice at any instant in time. However, there is also an equivalent and alternative formulation of mechanics where the equations of motion are instead found by invoking a variational princ...
متن کاملIce-sheet surging and ice-strealll forlllation
A simplified model of ice-sheet behayiour is described. I t combines the assumptions of rapid ice flow, high viscous actiyation energy and realistic sediment-based sliding dynamics to form a non-linear diffusion-type equation which can display relaxation oscillations analogous to those of surging glaciers, and which may be relevant to large-scale surges of the Hudson Strait and Cabot Strait ice...
متن کاملModelling ice sheet dynamics
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متن کاملAssessment of the importance of ice-shelf buttressing to ice-sheet flow
[1] Reduction or loss of a restraining ice shelf will cause speed-up of flow from contiguous ice streams, contributing to sea-level rise, with greater changes from ice streams that are wider, have stickier beds, or have higher driving stress. Loss of buttressing offsetting half of the tendency for icestream/ice-shelf spreading for an ice stream similar to Pine Island Glacier, West Antarctica is...
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ژورنال
عنوان ژورنال: Journal of the Japanese Society of Snow and Ice
سال: 1995
ISSN: 0373-1006,1883-6267
DOI: 10.5331/seppyo.57.163