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Variability in Basal Melting Beneath Pine Island Ice Shelf on Weekly to Monthly Timescales

Cited 22 time in wos
Cited 24 time in scopus
Title
Variability in Basal Melting Beneath Pine Island Ice Shelf on Weekly to Monthly Timescales
Other Titles
서남극 아문젠 파인아일랜드 빙붕 저층 융해의 변동성
Authors
Davis, Peter E. D.
Jenkins, Adrian
Nicholls, Keith W.
Brennan, Paul V.
Abrahamsen, E. Povl
Heywood, Karen J.
Dutrieux, Pierre
Cho, Kyoung-Ho
Kim, Tae-Wan
Keywords
AMUNDSEN SEA EMBAYMENTCIRCUMPOLAR DEEP-WATERGROUNDING LINE RETREATWEST ANTARCTICAOCEANOGRAPHIC CONTROLSKOHLER GLACIERSOCEANCIRCULATIONINFLOWRADAR
Issue Date
2018-11
Citation
Davis, Peter E. D., et al. 2018. "Variability in Basal Melting Beneath Pine Island Ice Shelf on Weekly to Monthly Timescales". JOURNAL OF GEOPHYSICAL RESEARCHOCEANS, 123(11): 8655-8669.
Abstract
Ocean-driven basal melting of Amundsen Sea ice shelves has triggered acceleration, thinning, and grounding line retreat on many West Antarctic outlet glaciers. Here we present the first year-long (2014) record of basal melt rate at sub-weekly resolution from a location on the outer Pine Island Ice Shelf. Adjustment of the upper thermocline to local wind forced variability in the vertical Ekman velocity is the dominant control on basal melting at weekly to monthly timescales. Atmosphere-ice-ocean surface heat fluxes or changes in advection of modified Circumpolar Deep Water play no discernible role at these timescales. We propose that during other years, a deepening of the thermocline in Pine Island Bay driven by longer timescale processes may have suppressed the impact of local wind forcing on high-frequency upper thermocline height variability and basal melting. This highlights the complex interplay between the different processes and their timescales that set the basal melt rate beneath Pine Island Ice Shelf.
URI
https://repository.kopri.re.kr/handle/201206/13706
DOI
http://dx.doi.org/10.1029/2018JC014464
Type
Article
Station
Araon
Indexed
SCI
Appears in Collections  
2017-2017, Ocean-to-Ice Interactions in Amundsen Sea: Ice shelf melting and its impact on ocean processes (17-17) / Lee, SangHoon (PE17060)
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