DOI: 10.1002/2016GL069524
论文题名: Radar detection of the brine extent at McMurdo Ice Shelf, Antarctica, and its control by snow accumulation
作者: Grima C. ; Greenbaum J.S. ; Lopez Garcia E.J. ; Soderlund K.M. ; Rosales A. ; Blankenship D.D. ; Young D.A.
刊名: Geophysical Research Letters
ISSN: 0094-8913
EISSN: 1944-8644
出版年: 2016
卷: 43, 期: 13 起始页码: 7011
结束页码: 7018
语种: 英语
英文关键词: brine
; ice shelf
; properties
; radar
; remote sensing
; snow
Scopus关键词: Brines
; Ice control
; Radar
; Remote sensing
; Slow light
; Snow
; Tracking radar
; Airborne observations
; Combined analysis
; Ice shelves
; Mcmurdo ice shelves
; Properties
; Radar detection
; Snow accumulation
; Surface density
; Ice
; ablation
; airborne survey
; brine
; detection method
; ice shelf
; ice-ocean interaction
; infiltration
; pressure gradient
; radar
; remote sensing
; scattering
; snow accumulation
; Antarctica
; East Antarctica
; McMurdo Ice Shelf
英文摘要: We derive the surface density and brine infiltration depth/extent at McMurdo Ice Shelf, Antarctica, from combined analysis of radar profiles and radar statistical reconnaissance of the surface from 2011 to 2012 austral summer airborne observations. Most of the brine boundaries appear controlled, directly or indirectly, by the snow accumulation pattern. The infiltration is bounded westward by an ablation area and resides just above the pore close-off depth over most of its extent. The eastern brine limit matches a light-snow corridor, suggesting a reversed pressure gradient at depth that might sharply slow down the infiltration. Brine into ice is confirmed at the deepest locations north and east of Williams Field. The ice-ocean interface is undetected west of the infiltrated zone, except in localized patches. We hypothesize this echo-free zone to be due to high scattering below the surface, possibly from a network of accreted ice and/or ice platelets at the ice-ocean interface. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978897999&doi=10.1002%2f2016GL069524&partnerID=40&md5=f2e215b0d92640f7950c72ece5280ef5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9876
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute for Geophysics, University of Texas at Austin, Austin, TX, United States
Recommended Citation:
Grima C.,Greenbaum J.S.,Lopez Garcia E.J.,et al. Radar detection of the brine extent at McMurdo Ice Shelf, Antarctica, and its control by snow accumulation[J]. Geophysical Research Letters,2016-01-01,43(13).