Assessment of the importance of ice-shelf buttressing to ice-sheet flow

Details Assessment of the importance of ice-shelf buttressing to ice-sheet flow Assessment of the importance of ice-shelf buttressing to ice-sheet flow

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3204503d&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 4, CiteID L04503

Physics

25

Cryosphere: Ice Sheets, Cryosphere: Ice Streams, Cryosphere: Ice Shelves, Cryosphere: Glaciology (1621, 1827, 1863), Global Change: Sea Level Change (1222, 1225, 4556)

Scientific paper

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 ice-stream/ice-shelf spreading for an ice stream similar to Pine Island Glacier, West Antarctica is modeled to contribute at least 1 mm of sea-level rise over a few decades. These results come from a new, simple model that includes relevant stresses in a boundary-layer formulation, and allows rapid estimation of ice-shelf impacts for a wide range of configurations.

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