DOI: 10.1002/2013GL057973
论文题名: Measuring water accumulation rates using GRACE data in areas experiencing glacial isostatic adjustment: The Nelson River basin
作者: Lambert A. ; Huang J. ; Van Der Kamp G. ; Henton J. ; Mazzotti S. ; James T.S. ; Courtier N. ; Barr A.G.
刊名: Geophysical Research Letters
ISSN: 0094-8320
EISSN: 1944-8051
出版年: 2013
卷: 40, 期: 23 起始页码: 6118
结束页码: 6122
语种: 英语
英文关键词: absolute gravity
; glacial isostatic adjustment
; GPS vertical
; GRACE
; water storage
Scopus关键词: Absolute gravity
; Glacial Isostatic Adjustments
; GRACE
; Gravity recovery and climate experiments
; Hydrological data
; Vertical velocity
; Water accumulation rate
; Water storage
; Geodetic satellites
; Gravitation
; Digital storage
; data set
; drainage basin
; GPS
; GRACE
; isostasy
; measurement method
; river discharge
; velocity
; Canada
; Manitoba
; Nelson Estuary
英文摘要: Gravity Recovery and Climate Experiment (GRACE) satellite-derived total water storage can be obscured by glacial isostatic adjustment. In order to solve this problem for the Nelson River drainage basin in Canada, a gravity rate map from 110 months (June 2002 to October 2011) of GRACE gravity data was corrected for glacial isostatic adjustment using an independent gravity rate map derived from updated GPS vertical velocities. The GPS-based map was converted to equivalent gravity rate using a transfer function developed from GPS and absolute-g data at colocated sites. The corrected GRACE gravity rate map revealed a major positive anomaly within the drainage basin, which was independently shown by hydrological data to be due to changes in water storage. The anomaly represents a cumulative increase at its center of about 340 mm of water, reflecting a progression from extreme drought to extremely wet conditions. Key Points Total water storage change is distinguished from glacial isostatic adjustment The methodology combines GRACE, GPS, and absolute gravity data TWS change is quantitatively confirmed by hydrological measurements ©2013 Her Majesty the Queen in Right of Canada. Geophysical Research Letters ©2013 American Geophysical Union. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84889075509&doi=10.1002%2f2013GL057973&partnerID=40&md5=ce4d567274a64e17276fc5576a3bb3cc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5584
Appears in Collections: 气候减缓与适应
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作者单位: Geological Survey of Canada, Natural Resources Canada, 9860 W. Saanich Rd., Sidney, BC V8L 4B2, Canada
Recommended Citation:
Lambert A.,Huang J.,Van Der Kamp G.,et al. Measuring water accumulation rates using GRACE data in areas experiencing glacial isostatic adjustment: The Nelson River basin[J]. Geophysical Research Letters,2013-01-01,40(23).