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题名: Rotation change in the orientation of the centre-of-figure frame caused by large earthquakes
作者: Zhou, Jiangcun1; Sun, Wenke2; Jin, Shuanggen3; Sun, Heping1; Xu, Jianqiao1
刊名: GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期: 2016-08-01
卷号: 206, 期号:2, 页码:999-1008
关键词: Numerical solutions ; Reference systems ; Space geodetic surveys ; Earthquake ground motions
DOI: 10.1093/gji/ggw182
文章类型: Article
英文摘要: A method to estimate the rotation change in the orientation of the centre-of-figure (CF) frame caused by earthquakes is proposed for the first time. This method involves using the point dislocation theory based on a spherical, non-rotating, perfectly elastic and isotropic (SNREI) Earth. The rotation change in the orientation is related solely to the toroidal displacements of degree one induced by the vertical dip slip dislocation, and the spheroidal displacements induced by an earthquake have no contribution. The effects of two recent large earthquakes, the 2004 Sumatra and the 2011 Tohoku-Oki, are studied. Results showed that the Sumatra and Tohoku-Oki earthquakes both caused the CF frame to rotate by at least tens of mu as (micro-arc-second). Although the visible co-seismic displacements are identified and removed from the coordinate time-series, the rotation change due to the unidentified ones and errors in removal is non-negligible. Therefore, the rotation change in the orientation of the CF frame due to seismic deformation should be taken into account in the future in reference frame and geodesy applications.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Geochemistry & Geophysics
研究领域[WOS]: Geochemistry & Geophysics
关键词[WOS]: TERRESTRIAL REFERENCE FRAME ; SUMATRA-ANDAMAN EARTHQUAKE ; GEOCENTER MOTION ; GRAVITY CHANGES ; INTERNAL DISLOCATIONS ; POINT DISLOCATION ; SPHERICAL EARTH ; DEFORMATION ; ORIGIN ; IMPACT
收录类别: SCI
项目资助者: '973' project(2014CB845902) ; National Natural Science Foundation of China(41374025 ; Chinese Academy of Science/State Administration of Foreign Experts Affairs international partnership program(KZZD-EW-TZ-19) ; State Key Laboratory of Geodesy and Earth's Dynamics foundation(SKLGED2014-1-1-E) ; 41321063 ; 41474059 ; 41331066 ; 41174063 ; 11173050 ; 11373059)
语种: 英语
WOS记录号: WOS:000379772500018
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16117
Appears in Collections:南极天文中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan 430077, Peoples R China
2.Univ Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Planetary Sci, Shanghai 200030, Peoples R China
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