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Title: Treatment of ice-shelf evolution combining flow and flexure
Abstract We develop a two-dimensional, plan-view formulation of ice-shelf flow and viscoelastic ice-shelf flexure. This formulation combines, for the first time, the shallow-shelf approximation for horizontal ice-shelf flow (and shallow-stream approximation for flow on lubricated beds such as where ice rises and rumples form), with the treatment of a thin-plate flexure. We demonstrate the treatment by performing two finite-element simulations: one of the relict pedestalled lake features that exist on some debris-covered ice shelves due to strong heterogeneity in surface ablation, and the other of ice rumpling in the grounding zone of an ice rise. The proposed treatment opens new venues to investigate physical processes that require coupling between the longitudinal deformation and vertical flexure, for instance, the effects of surface melting and supraglacial lakes on ice shelves, interactions with the sea swell, and many others.  more » « less
Award ID(s):
1841467 1841607
NSF-PAR ID:
10322206
Author(s) / Creator(s):
; ; ; ; ;
Date Published:
Journal Name:
Journal of Glaciology
Volume:
67
Issue:
265
ISSN:
0022-1430
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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