气候变化领域集成服务门户(CCPortal): Link between Seismic Velocity Structure and the 2010 M-s 7.1 Yushu Earthquake, Qinghai, China: Evidence from Aftershock Tomography

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DOI	10.1785/0120110138
	Link between Seismic Velocity Structure and the 2010 M-s 7.1 Yushu Earthquake, Qinghai, China: Evidence from Aftershock Tomography
	Pei, Shunping; Chen, Yongshun John
通讯作者	Pei, SP (通讯作者)
发表日期	2012
ISSN	0037-1106
EISSN	1943-3573
起始页码	445
结束页码	450
卷号	102 期号:1
英文摘要	A high-resolution 2D (horizontal) seismic velocity model is presented for the upper crust around the epicenter of the 14 April 2010 M-s 7.1 Yushu earthquake from aftershock tomography. The velocity model is obtained using a simple Pn-like tomography method including both station and event depth corrections. The most striking result is a fast-velocity anomaly at the epicenter on the Yushu-Garze fault (YGF). The main rupture originated within this fast-velocity anomaly and propagated southeastward into a slow-velocity anomaly at Yushu. The second largest aftershock on 29 May 2010 on a nearby fault also occurred within this fast-velocity anomaly. These results demonstrate a clear example that lateral variation in seismic velocity structures of the upper crust controlled the origination (stress accumulation) and rupture propagation of the 2010 Yushu earthquake and distribution of aftershocks as well. The simple 2D Pg wave travel-time tomography method presented here introduces a new approach utilizing abundant aftershocks data for investigating the rupturing process of a major earthquake.
关键词	MOTION
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000300614700033
来源期刊	BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258001
推荐引用方式 GB/T 7714	Pei, Shunping,Chen, Yongshun John. Link between Seismic Velocity Structure and the 2010 M-s 7.1 Yushu Earthquake, Qinghai, China: Evidence from Aftershock Tomography[J]. 中国科学院青藏高原研究所,2012,102(1).
APA	Pei, Shunping,&Chen, Yongshun John.(2012).Link between Seismic Velocity Structure and the 2010 M-s 7.1 Yushu Earthquake, Qinghai, China: Evidence from Aftershock Tomography.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,102(1).
MLA	Pei, Shunping,et al."Link between Seismic Velocity Structure and the 2010 M-s 7.1 Yushu Earthquake, Qinghai, China: Evidence from Aftershock Tomography".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 102.1(2012).