DOI: 10.1002/2015GL063769
论文题名: GRACE gravity observations constrain Weichselian ice thickness in the Barents Sea
作者: Root B.C. ; Tarasov L. ; Van Der Wal W.
刊名: Geophysical Research Letters
ISSN: 0094-9553
EISSN: 1944-9284
出版年: 2015
卷: 42, 期: 9 起始页码: 3313
结束页码: 3320
语种: 英语
英文关键词: Barents Sea
; glacial isostatic adjustment
; GRACE gravity rate
; ice loading
; rheology
Scopus关键词: Budget control
; Geodetic satellites
; Glacial geology
; Glaciers
; Loading
; Rheology
; Sea level
; Barents sea
; Glacial Isostatic Adjustments
; Global sea levels
; Gravity recovery and climate experiment satellites
; Ice loading
; Ice thickness
; Last Glacial Maximum
; Linear trends
; Ice
; GRACE
; gravity field
; ice sheet
; ice thickness
; linear programing
; melting
; regional pattern
; sea level
; Arctic Ocean
; Barents Sea
英文摘要: The Barents Sea is subject to ongoing postglacial uplift since the melting of the Weichselian ice sheet that covered it. The regional ice sheet thickness history is not well known because there is only data at the periphery due to the locations of Franz Joseph Land, Svalbard, and Novaya Zemlya surrounding this paleo ice sheet. We show that the linear trend in the gravity rate derived from a decade of observations from the Gravity Recovery and Climate Experiment (GRACE) satellite mission can constrain the volume of the ice sheet after correcting for current ice melt, hydrology, and far-field gravitational effects. Regional ice-loading models based on new geologically inferred ice margin chronologies show a significantly better fit to the GRACE data than that of ICE-5G. The regional ice models contain less ice in the Barents Sea than present in ICE-5G (5-6.3m equivalent sea level versus 8.5m), which increases the ongoing difficulty in closing the global sea level budget at the Last Glacial Maximum. Key Points GRACE gravity rate shows significant signal in the Barents Sea Presented regional ice-loading model represents GRACE gravity rate better A local weaker mantle is needed to fit ICE-5G to GRACE observations ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930480875&doi=10.1002%2f2015GL063769&partnerID=40&md5=ba277af7302845833e7ea32d599502b1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9168
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: Department of Astrodynamics and Space Missions, Delft University of Technology, Delft, Netherlands
Recommended Citation:
Root B.C.,Tarasov L.,Van Der Wal W.. GRACE gravity observations constrain Weichselian ice thickness in the Barents Sea[J]. Geophysical Research Letters,2015-01-01,42(9).