Switch-off of a major enhanced ice flow unit in East Antarctica

Details Switch-off of a major enhanced ice flow unit in East Antarctica Switch-off of a major enhanced ice flow unit in East Antarctica

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3315501r&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 15, CiteID L15501

Computer Science

Sound

3

Cryosphere: Glaciers, Cryosphere: Ice Sheets, Cryosphere: Glaciology (1621, 1827, 1863), Global Change: Cryospheric Change (0776), Geographic Location: Antarctica (4207)

Scientific paper

The East Antarctic Ice Sheet (EAIS) is the largest reservoir of ice on the planet by an order of magnitude. Compared with the West Antarctic Ice Sheet (WAIS), it is traditionally considered to be relatively stable, with only minor adjustments to its configuration over glacial-interglacial cycles. Here, we present the results of a radio-echo sounding survey from Coats Land, East Antarctica, which suggests that parts of the EAIS outlet drainage system may have changed significantly since the Last Glacial Maximum. We have identified an enhanced flow unit from buckled internal layering and smooth bed morphology that is no longer active. We believe this feature to have shut down at some point since the Last Glacial Maximum, ~20 ka BP.

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