Rotation change in the orientation of the centre-of-figure frame caused by large earthquakes

	Rotation change in the orientation of the centre-of-figure frame caused by large earthquakes
	Zhou, Jiangcun 1; Sun, Wenke 2; Jin, Shuanggen 3; Sun, Heping 1; Xu, Jianqiao 1
刊名	GEOPHYSICAL JOURNAL INTERNATIONAL
	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
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
语种	英语
WOS记录号	WOS:000379772500018
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/16117]
专题	紫金山天文台_南极天文中心
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
推荐引用方式 GB/T 7714	Zhou, Jiangcun,Sun, Wenke,Jin, Shuanggen,et al. Rotation change in the orientation of the centre-of-figure frame caused by large earthquakes[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2016,206(2):999-1008.
APA	Zhou, Jiangcun,Sun, Wenke,Jin, Shuanggen,Sun, Heping,&Xu, Jianqiao.(2016).Rotation change in the orientation of the centre-of-figure frame caused by large earthquakes.GEOPHYSICAL JOURNAL INTERNATIONAL,206(2),999-1008.
MLA	Zhou, Jiangcun,et al."Rotation change in the orientation of the centre-of-figure frame caused by large earthquakes".GEOPHYSICAL JOURNAL INTERNATIONAL 206.2(2016):999-1008.