Channelized Ice Melting in the Ocean Boundary Layer Beneath Pine Island Glacier, Antarctica
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Author
Stanton, Timothy P.
Shaw, W.J.
Truffer, M.
Corr, H.F.J.
Peters, L.E.
Riverman, K.L.
Bindschadler, R.
Holland, D.M.
Anandakrishnan, S.
Date
2013-09-13Metadata
Show full item recordAbstract
Ice shelves play a key role in the mass balance of the Antarctic ice sheets by buttressing their seawardflowing
outlet glaciers; however, they are exposed to the underlying ocean and may weaken if ocean
thermal forcing increases. An expedition to the ice shelf of the remote Pine Island Glacier, a major outlet
of the West Antarctic Ice Sheet that has rapidly thinned and accelerated in recent decades, has been
completed. Observations from geophysical surveys and long-term oceanographic instruments deployed
down bore holes into the ocean cavity reveal a buoyancy-driven boundary layer within a basal channel
that melts the channel apex by 0.06 meter per day, with near-zero melt rates along the flanks of the
channel. A complex pattern of such channels is visible throughout the Pine Island Glacier shelf.
Description
The article of record as published may be found at http://dx.doi.org/10.1126/science.1239373
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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