DOI: 10.1002/2013GL058616
论文题名: A decade of West Antarctic subglacial lake interactions from combined ICESat and CryoSat-2 altimetry
作者: Siegfried M.R. ; Fricker H.A. ; Roberts M. ; Scambos T.A. ; Tulaczyk S.
刊名: Geophysical Research Letters
ISSN: 0094-10377
EISSN: 1944-10108
出版年: 2014
卷: 41, 期: 3 起始页码: 891
结束页码: 898
语种: 英语
英文关键词: altimetry
; CryoSat-2
; glacier dynamics
; ice stream
; ICESat
; subglacial lakes
Scopus关键词: Catchments
; Ice
; Lakes
; Radar
; Satellites
; altimetry
; CryoSat-2
; Glacier dynamics
; Ice streams
; ICESat
; Subglacial lakes
; Global positioning system
; calibration
; CryoSat-2
; GPS
; ice sheet
; ICESat
; radar
; satellite altimetry
; satellite data
; satellite imagery
; subglacial environment
; Southern Ocean
英文摘要: We use CryoSat-2 interferometric satellite radar altimetry over the Mercer and Whillans ice streams, West Antarctica, to derive surface elevation changes due to subglacial lake activity at monthly resolution for the period 2010 to 2013. We validate CryoSat-2 elevation measurements, trends, and spatial patterns of change using satellite image differencing and in situ vertical movement from Global Positioning System (GPS) data. Two subglacial lake discharge events occur in the same subglacial-hydrological catchment within a 9 month period. Using GPS measurements that are spanning the gap between the Ice, Cloud, and land Elevation Satellite and Cryosat-2 missions, we cross-calibrate the two missions to establish the efficacy of CryoSat-2 altimetry to measure dynamic changes on the ice sheets. Key Points CryoSat-2 altimetry recovers subannual, dynamic ice surface elevation changes GPS data are critical for precise radar and laser altimetry cross-calibration Extended subglacial lake activity time series infers two new discharge events © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893710878&doi=10.1002%2f2013GL058616&partnerID=40&md5=a8d81a4c584435adb84e260d7722f295
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7641
Appears in Collections: 气候减缓与适应
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作者单位: Institute for Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, CA, United States
Recommended Citation:
Siegfried M.R.,Fricker H.A.,Roberts M.,et al. A decade of West Antarctic subglacial lake interactions from combined ICESat and CryoSat-2 altimetry[J]. Geophysical Research Letters,2014-01-01,41(3).