DOI: 10.1002/2014GL061940
论文题名: Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques
作者: Sutterley T.C. ; Velicogna I. ; Rignot E. ; Mouginot J. ; Flament T. ; Van Den Broeke M.R. ; Van Wessem J.M. ; Reijmer C.H.
刊名: Geophysical Research Letters
ISSN: 0094-9542
EISSN: 1944-9273
出版年: 2014
卷: 41, 期: 23 起始页码: 8421
结束页码: 8428
语种: 英语
英文关键词: altimetry
; ice fluxes
; mass balance
; time-variable gravity
; West Antarctica
Scopus关键词: Acceleration
; Geodetic satellites
; Glacial geology
; Ice
; Radar
; Radar imaging
; altimetry
; Laser altimetry
; Mass balance
; Mass balance estimates
; Radar altimetry
; Surface mass balance
; Time-variable gravity
; West antarctica
; Gravitation
; acceleration
; embankment
; estimation method
; ice retreat
; ice thickness
; mass balance
; Amundsen Sea
; Antarctica
; Southern Ocean
; West Antarctica
英文摘要: We compare four independent estimates of the mass balance of the Amundsen Sea Embayment of West Antarctica, an area experiencing rapid retreat and mass loss to the sea. We use ICESat and Operation IceBridge laser altimetry, Envisat radar altimetry, GRACE time-variable gravity, RACMO2.3 surface mass balance, ice velocity from imaging radars, and ice thickness from radar sounders. The four methods agree in terms of mass loss and acceleration in loss at the regional scale. Over 1992-2013, the mass loss is 83 ± 5 Gt/yr with an acceleration of 6.1 ± 0.7 Gt/yr2. During the common period 2003-2009, the mass loss is 84 ± 10 Gt/yr with an acceleration of 16.3 ± 5.6 Gt/yr2, nearly 3 times the acceleration over 1992-2013. Over 2003-2011, the mass loss is 102 ± 10 Gt/yr with an acceleration of 15.7 ± 4.0 Gt/yr2. The results reconcile independent mass balance estimates in a setting dominated by change in ice dynamics with significant variability in surface mass balance. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921459674&doi=10.1002%2f2014GL061940&partnerID=40&md5=3e770dd37e2349d9a652ca31847da740
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6806
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth System Science, University of CaliforniaCA, United States
Recommended Citation:
Sutterley T.C.,Velicogna I.,Rignot E.,et al. Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques[J]. Geophysical Research Letters,2014-01-01,41(23).