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	Comparisons of global coseismic displacements from several fault slip models for the 2004 sumatra earthquake
	Qu Wu-Lin1,2; Zhang Bei1,2; Huang Lu-Yuan1,2; Yin Feng-Ling1,3; Zhang Huai1,2; Shi Yao-Lin1,2
刊名	Chinese journal of geophysics-chinese edition
	2016-08-01
卷号	59期号:8页码:2843-2858
关键词	2004 sumatra earthquake Seismic dislocation Coseismic displacement Fault slip Gps
ISSN号	0001-5733
DOI	10.6038/cjg20160811
通讯作者	Shi yao-lin(shiyl@ucas.ac.cn)
英文摘要	After 2004 great sumatra earthquake, some authors presented different fault slip models from seismic waves and/or gps data. however, because half-space homogenous or layered medium was adopted, the inversion of the coseismic model from observed coseismic displacements can only use near-field gps data as the constraint but not far-field data. this can result in great differences among fault slip models. therefore, how to evaluate those modes is an important problem. this paper uses the equivalent body force finite elements method, considering the earth curvature and layered structure, to compute global coseismic displacements using four fault slip models of the 2004 sumatra earthquake provided by different authors. comparisons of calculated coseismic displacements show that the vertical displacement is less sensitive to the fault slip model. calculated coseismic displacements of all the four models agree well with near-field gps observations, but significantly different in comparison with far-field gps observations. in the whole four models, the chlieh model is the best. the effects of data used in inversion, the fault geometry and the earth model are discussed in this paper. for great earthquakes, the consistency between calculated and observed global coseismic displacement is one important criterion for evaluating the fault slip model.
WOS关键词	GPS STATIC OFFSETS ; ANDAMAN EARTHQUAKE ; GRAVITY CHANGES ; TENSILE FAULTS ; HALF-SPACE ; POINT DISLOCATIONS ; NICOBAR ISLANDS ; RUPTURE PROCESS ; DEFORMATION ; DECEMBER
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000381166400011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374405
专题	中国科学院大学
通讯作者	Shi Yao-Lin
作者单位	1.Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Qu Wu-Lin,Zhang Bei,Huang Lu-Yuan,et al. Comparisons of global coseismic displacements from several fault slip models for the 2004 sumatra earthquake[J]. Chinese journal of geophysics-chinese edition,2016,59(8):2843-2858.
APA	Qu Wu-Lin,Zhang Bei,Huang Lu-Yuan,Yin Feng-Ling,Zhang Huai,&Shi Yao-Lin.(2016).Comparisons of global coseismic displacements from several fault slip models for the 2004 sumatra earthquake.Chinese journal of geophysics-chinese edition,59(8),2843-2858.
MLA	Qu Wu-Lin,et al."Comparisons of global coseismic displacements from several fault slip models for the 2004 sumatra earthquake".Chinese journal of geophysics-chinese edition 59.8(2016):2843-2858.

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