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Getz Ice Shelf melt enhanced by freshwater discharge from beneath the West Antarctic Ice Sheet

Cited 10 time in wos
Cited 10 time in scopus
Title
Getz Ice Shelf melt enhanced by freshwater discharge from beneath the West Antarctic Ice Sheet
Other Titles
서남극 빙붕하부 담수 배출 증가로 인한 갯츠빙붕 융해의 강화
Authors
Wei, Wei
Blankenship, Donald D.
Greenbaum, Jamin S.
Gourmelen, Noel
Dow, Christine F.
Richter, Thomas G.
Greene, Chad A.
Young, Duncan A.
Lee, SangHoon
Kim, Tae-Wan
Lee, Won Sang
Assmann, Karen M.
Subject
Physical GeographyGeology
Keywords
AMUNDSEN SEA EMBAYMENTICEBRIDGE GRAVITYBATHYMETRYGLACIERSURFACEMODELTHICKNESSMELTWATERSEDIMENTDRAINAGE
Issue Date
2020-04-27
Citation
Wei Wei, et al. 2020. "Getz Ice Shelf melt enhanced by freshwater discharge from beneath the West Antarctic Ice Sheet". CRYOSPHERE, 14(4): 1399-1408.
Abstract
Antarctica’s Getz Ice Shelf has been rapidly thin- ning in recent years, producing more meltwater than any other ice shelf in the world. The influx of fresh water is known to substantially influence ocean circulation and bi- ological productivity, but relatively little is known about the factors controlling basal melt rate or how basal melt is spatially distributed beneath the ice shelf. Also unknown is the relative importance of subglacial discharge from the grounded ice sheet in contributing to the export of fresh water from the ice shelf cavity. Here we compare the ob- served spatial distribution of basal melt rate to a new sub-ice- shelf bathymetry map inferred from airborne gravity surveys and to locations of subglacial discharge from the grounded ice sheet. We find that melt rates are high where bathymet- ric troughs provide a pathway for warm Circumpolar Deep Water to enter the ice shelf cavity and that melting is en- hanced where subglacial discharge fresh water flows across the grounding line. This is the first study to address the rela- tive importance of meltwater production of the Getz Ice Shelf from both ocean and subglacial sources.
URI
https://repository.kopri.re.kr/handle/201206/13024
DOI
http://dx.doi.org/10.5194/tc-14-1399-2020
Type
Article
Station
Araon
Indexed
SCIE
Appears in Collections  
2019-2020, Land-Ice/Ocean Network Exploration with Semiautonomous Systems: Thwaites Glacier (LIONESS/TG) - Toward understanding the fate of the Thwaites Glacier by abrupt collapse and its impact on global sea level changes - (19-20) / Lee, Won Sang (PM19020)
2018-2018, Ocean-to-Ice Interactions in Amundsen Sea: Ice shelf melting and its impact on ocean processes (18-18) / Kim, Tae-Wan (PE18060)
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