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	Coseismic displacements caused by point dislocations in a three-dimensional heterogeneous, spherical earth model
	Fu, Guangyu1,2; Sun, Wenke3; Fukuda, Yoichi1; Gao, Shanghua2
刊名	Geophysical journal international
	2010-11-01
卷号	183期号:2页码:706-726
关键词	Numerical solutions Non-linear differential equations Transient deformation Global change from geodesy
ISSN号	0956-540X
DOI	10.1111/j.1365-246x.2010.04757.x
通讯作者	Fu, guangyu(fugy@kugi.kyoto-u.ac.jp)
英文摘要	P>we present a method to study the coseismic displacements caused by point dislocations in a 3-d heterogeneous, spherical earth model. specifically, first we express the solutions by the sum of unperturbed displacements on a spherically symmetric earth model and the effects of the earth's laterally inhomogeneous structures (3-d effect). then we deliberately decompose the 3-d effect into two contributions: the effect of seismic sources and the effect of the earth's lateral increments, which are obtainable, respectively, by perturbation of seismic source functions and perturbation of equilibrium equation. next we present new formulations for six point seismic sources: a vertical strike-slip, two vertical dip-slips perpendicular to each other and three tensile openings on three perpendicular planes. a combination of the six dislocations is useful to compute the 3-d effect resulting from an arbitrary seismic source at an arbitrary position. finally, based on a 3-d earth model we calculate the coseismic displacements resulting from three types of point dislocations. results show that the maximum 3-d effect on coseismic displacements, which varies concomitantly with the dislocation type and the source depth, is about 1-2 per cent of the corresponding unperturbed solutions. among those parameters the effect due to the heterogeneities in s-wave velocity is biggest.
WOS关键词	VISCOELASTIC POSTSEISMIC DEFORMATION ; FREQUENCY TRAVEL-TIMES ; GRAVITY CHANGES ; INTERNAL DISLOCATIONS ; RELAXATION THEORY ; FRECHET KERNELS ; TENSILE FAULTS ; HALF-SPACE ; SURFACE ; MANTLE
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000283172100015
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2415516
专题	中国科学院大学
通讯作者	Fu, Guangyu
作者单位	1.Kyoto Univ, Dept Geophys, Grad Sch Sci, Kyoto, Japan 2.China Earthquake Adm, Inst Earthquake Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Fu, Guangyu,Sun, Wenke,Fukuda, Yoichi,et al. Coseismic displacements caused by point dislocations in a three-dimensional heterogeneous, spherical earth model[J]. Geophysical journal international,2010,183(2):706-726.
APA	Fu, Guangyu,Sun, Wenke,Fukuda, Yoichi,&Gao, Shanghua.(2010).Coseismic displacements caused by point dislocations in a three-dimensional heterogeneous, spherical earth model.Geophysical journal international,183(2),706-726.
MLA	Fu, Guangyu,et al."Coseismic displacements caused by point dislocations in a three-dimensional heterogeneous, spherical earth model".Geophysical journal international 183.2(2010):706-726.

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