Thickening of the ice stream catchments feeding the Filchner-Ronne Ice Shelf, Antarctica

Details Thickening of the ice stream catchments feeding the Filchner-Ronne Ice Shelf, Antarctica Thickening of the ice stream catchments feeding the Filchner-Ronne Ice Shelf, Antarctica

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3217503j&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 17, CiteID L17503

Physics

9

Cryosphere: Ice Sheets, Cryosphere: Glaciology (1621, 1827, 1863)

Scientific paper

Earlier ice-sheet mass-balance estimates disagree with satellite-altimeter-measured thickening of the catchment area that feeds the Filchner-Ronne Ice Shelf, Antarctica. In an effort to reconcile these differences, we generated a new flux-gate mass-balance estimate, using improved elevation and velocity data. Our results show a 39 +/- 26 Gton/yr thickening, whereas earlier flux-gate results indicated minor thinning. Our results are consistent with altimeter-derived estimates of elevation change. This suggests that altimeter-observed thickening on the East Antarctic plateau may be the result of some combination of a 20th Century accumulation increase and a continuing response to the ~50% accumulation increase that began in the early Holocene.

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