DOI: 10.1002/2016GL068648
论文题名: Separating climate-induced mass transfers and instrumental effects from tectonic signal in repeated absolute gravity measurements
作者: Van Camp M. ; De Viron O. ; Avouac J.P.
刊名: Geophysical Research Letters
ISSN: 0094-9057
EISSN: 1944-8788
出版年: 2016
卷: 43, 期: 9 起始页码: 4313
结束页码: 4320
语种: 英语
英文关键词: absolute gravity measurements
; hydrological effects on gravity
; time-varying gravity
Scopus关键词: Geodetic satellites
; Mass transfer
; Surveys
; Tectonics
; Absolute gravity
; Gravimetric measurements
; Gravity changes
; Gravity Recovery and Climate Experiment missions
; Hydrological effects
; Hydrological variability
; Rate of change
; Time varying
; Gravitation
英文摘要: We estimate the signature of the climate-induced mass transfers in repeated absolute gravity measurements based on satellite gravimetric measurements from the Gravity Recovery and Climate Experiment (GRACE) mission. We show results at the globe scale and compare them with repeated absolute gravity (AG) time behavior in three zones where AG surveys have been published: Northwestern Europe, Canada, and Tibet. For 10 yearly campaigns, the uncertainties affecting the determination of a linear gravity rate of change range 3-4 nm/s2/a in most cases, in the absence of instrumental artifacts. The results are consistent with what is observed for long-term repeated campaigns. We also discuss the possible artifact that can result from using short AG survey to determine the tectonic effects in a zone of high hydrological variability. We call into question the tectonic interpretation of several gravity changes reported from stations in Tibet, in particular the variation observed prior to the 2015 Gorkha earthquake. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966333705&doi=10.1002%2f2016GL068648&partnerID=40&md5=4b409fbc6928a33732713f2ff58253d0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10020
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: Seismology-Gravimetry, Royal Observatory of Belgium, Uccle, Belgium
Recommended Citation:
Van Camp M.,De Viron O.,Avouac J.P.. Separating climate-induced mass transfers and instrumental effects from tectonic signal in repeated absolute gravity measurements[J]. Geophysical Research Letters,2016-01-01,43(9).