Link between Seismic Velocity Structure and the 2010 M-s 7.1 Yushu   Earthquake, Qinghai, China: Evidence from Aftershock Tomography

doi:10.1785/0120110138

CORC > 北京大学 > 地球与空间科学学院

	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
刊名	bulletin of the seismological society of america
	2012
关键词	FAULT PLATEAU MOTION
DOI	10.1785/0120110138
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.; Geochemistry & Geophysics; SCI(E); EI; 4; ARTICLE; 1; 445-450; 102
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/393703]
专题	地球与空间科学学院
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]. bulletin of the seismological society of america,2012.
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.
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 (2012).