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	A rheological model of post-seismic deformation for the 2001 kunlun, china earthquake, mw 7.8
	Zhang, Chaojun1,2; Shi, Yaolin2; Ma, Li1; Lomnitz, Cinna3
刊名	Geofisica internacional
	2007-07-01
卷号	46期号:3页码:145-154
关键词	Post-seismic deformation Rheology Viscosity Kunlun earthquake
ISSN号	0016-7169
通讯作者	Zhang, chaojun(zcj72@hotmail.com)
英文摘要	The mw7.8 kunlun earthquake of 14 november, 2001, in the northern tibetan plateau of china, was the largest event in the chinese continental area in the latest 50 years. in this paper, layered visco-elastic models are calculated using the psgrn/pscmp code, and the results are fitted to the observed post-seismic deformation. we show that a model of a surface anelastic layer of 10km thickness over an elastic lower crust cannot explain the observed amplitude of deformation. a relaxation model featuring 30km of elastic upper crust over 40km of a ductile lower crust will account for the main features of exponential attenuation of post-seismic deformation. combination of the two models, however, provides an even better fit including the fact that the deformation rate was higher in the first few weeks and slower thereafter. the viscous layer in the lower crust provides good control of the post-seismic deformation, including the long term decay of deformation over a period of months. the upper anelastic layer may contribute to the observed high deformation rate in the initial few weeks after the main earthquake. the results suggest that rheological differences may exist between the materials on either side of the kunlun fault.
WOS关键词	28 JUNE 1992 ; LANDERS EARTHQUAKE ; RELAXATION ; AFTERSLIP ; SLIP ; CALIFORNIA
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
语种	英语
出版者	INST GEOPHYSICS UNAM
WOS记录号	WOS:000255021900001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2380241
专题	中国科学院大学
通讯作者	Zhang, Chaojun
作者单位	1.China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China 2.Grad Univ Chinese Acad Sci, Lab Computat Geodynam, Beijing 100049, Peoples R China 3.Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico
推荐引用方式 GB/T 7714	Zhang, Chaojun,Shi, Yaolin,Ma, Li,et al. A rheological model of post-seismic deformation for the 2001 kunlun, china earthquake, mw 7.8[J]. Geofisica internacional,2007,46(3):145-154.
APA	Zhang, Chaojun,Shi, Yaolin,Ma, Li,&Lomnitz, Cinna.(2007).A rheological model of post-seismic deformation for the 2001 kunlun, china earthquake, mw 7.8.Geofisica internacional,46(3),145-154.
MLA	Zhang, Chaojun,et al."A rheological model of post-seismic deformation for the 2001 kunlun, china earthquake, mw 7.8".Geofisica internacional 46.3(2007):145-154.

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