DOI: 10.1002/grl.50900
论文题名: Accelerated ice mass depletion revealed by low-degree gravity field from satellite laser ranging: Greenland, 1991-2011
作者: Matsuo K. ; Chao B.F. ; Otsubo T. ; Heki K.
刊名: Geophysical Research Letters
ISSN: 0094-8589
EISSN: 1944-8320
出版年: 2013
卷: 40, 期: 17 起始页码: 4662
结束页码: 4667
语种: 英语
英文关键词: Greenland
; satellite geodesy
; SLR
; time-variable gravity
Scopus关键词: Glacial Isostatic Adjustments
; Gravity recovery and climate experiments
; Greenland
; Satellite geodesy
; Satellite laser ranging
; Satellite laser ranging datum
; SLR
; Time-variable gravity
; Geodetic satellites
; Glacial geology
; Gravimeters
; Ice
; Tracking (position)
; Gravitation
; acceleration
; geodesy
; GRACE
; gravimetry
; gravity field
; ice
; satellite data
; satellite laser ranging
; time
; uplift
; Arctic
; Greenland
英文摘要: We detect the acceleration of ice mass depletion in Greenland for the period 1991-2011 from the low-degree gravity field up to degree and order 4 derived from the Satellite Laser Ranging (SLR) data. Between 2003 and 2011, during the era when the GRACE (Gravity Recovery and Climate Experiment) satellite data are available, our SLR results of gravity changes agree well with GRACE showing significant negative patterns in Greenland. Prior to that, the SLR linear trend maps show a near balance in Greenland ice mass during 1991-2002 (after the glacial isostatic adjustment is accounted for using model values). We further confirm the consistency of our SLR results with the vertical crustal uplift of the region observed by the Global Positining System (GPS) which manifests ice mass loading/unloading. Thus, the SLR data series constitute a continuous benchmark for the time history of the Greenland ice mass changes for over two decades. Key Points Low-degree gravity field in 1991-2011 is obtained from the SLR tracking data SLR gravimetry detects the acceleration of ice loss in Greenland in 1991-2011 SLR gravimetry allows us to observe the mass variability of Greenland ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883702724&doi=10.1002%2fgrl.50900&partnerID=40&md5=6630c0f2cbeb97dc6a062babe8995d0c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5853
Appears in Collections: 气候减缓与适应
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作者单位: Graduate School of Sciences, Kyoto University, Kyoto 606-8502, Japan
Recommended Citation:
Matsuo K.,Chao B.F.,Otsubo T.,et al. Accelerated ice mass depletion revealed by low-degree gravity field from satellite laser ranging: Greenland, 1991-2011[J]. Geophysical Research Letters,2013-01-01,40(17).