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	Slip rate variation along the kunlun fault (tibet): results from new gps observations and a viscoelastic earthquake-cycle deformation model
	Diao, Faqi1; Xiong, Xiong1; Wang, Rongjiang2; Walter, Thomas R.2; Wang, Yuebing3; Wang, Kai4
刊名	Geophysical research letters
	2019-03-16
卷号	46期号:5页码:2524-2533
关键词	Kunlun fault Slip rate Gps Viscoelastic effect Tectonic deformation
ISSN号	0094-8276
DOI	10.1029/2019gl081940
通讯作者	Diao, faqi(fqdiao@cug.edu.cn)
英文摘要	The slip rate and its spatial variations of the kunlun fault (klf) play important roles in the tectonic evolution of the northeastern tibetan plateau. here the slip rate of the tuosuo lake (tl) segment of the klf, which remains controversial from various geological observations, is investigated with a dense global positioning system observation profile. with a viscoelastic earthquake-cycle deformation model, the slip rate of the tl segment is estimated to be 5.5 +/- 0.7 mm/a, in comparison with an overestimated value of 9.2 +/- 1.1 mm/a from an elastic model. combined with previous results, we infer that the slip rate of the klf likely decreases gradually from the tl segment toward the eastern tip, rather than remaining uniform along the fault or decreasing rapidly within the easternmost 150 km. the estimated lower crust viscosity (similar to 10(18) pa.s) agrees with values inferred from postseismic studies, which suggests a weak ductile lower crust in this region. plain language summary the kunlun fault (klf) is one of the major left-lateral strike-slip faults on the tibetan plateau and accommodates a significant portion of the plateau's eastward motion. the slip rate and its spatial variations along the klf play important roles in understanding the associated tectonic evolution, crustal deformation, and seismic activity. however, how the slip rate varies along the fault remains controversial. here a dense global positioning system velocity profile across the tuosuo lake segment is used to probe the slip rate of the eastern klf. the results inferred from a viscoelastic earthquake-cycle deformation model suggest that the slip rate of the klf decreases gradually from the tuosuo lake segment toward its eastern tip, rather than remaining uniform along the fault or decreasing rapidly within the easternmost 150km of the fault as inferred previously from different observations. our results also highlight the viscoelastic relaxation effect during the earthquake cycle.
WOS关键词	GLOBAL POSITIONING SYSTEM ; STRIKE-SLIP ; SEGMENT ; PLATEAU ; RUPTURE ; DISPLACEMENT
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000462612900022
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373159
专题	武汉植物园
通讯作者	Diao, Faqi
作者单位	1.China Univ Geosci, Inst Geophys & Geomat, Hubei Subsurface Multi Scale Imaging Key Lab, Wuhan, Hubei, Peoples R China 2.GFZ German Res Ctr Geosci, Potsdam, Germany 3.China Earthquake Networks Ctr, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Diao, Faqi,Xiong, Xiong,Wang, Rongjiang,et al. Slip rate variation along the kunlun fault (tibet): results from new gps observations and a viscoelastic earthquake-cycle deformation model[J]. Geophysical research letters,2019,46(5):2524-2533.
APA	Diao, Faqi,Xiong, Xiong,Wang, Rongjiang,Walter, Thomas R.,Wang, Yuebing,&Wang, Kai.(2019).Slip rate variation along the kunlun fault (tibet): results from new gps observations and a viscoelastic earthquake-cycle deformation model.Geophysical research letters,46(5),2524-2533.
MLA	Diao, Faqi,et al."Slip rate variation along the kunlun fault (tibet): results from new gps observations and a viscoelastic earthquake-cycle deformation model".Geophysical research letters 46.5(2019):2524-2533.

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