NDLI: Relocation of the Yushu M $_{S}$7.1 earthquake and its aftershocks in 2010 from HypoDD

Content Provider	Springer Nature Link
Author	Wang, WeiLai Wu, JianPing Fang, LiHua Wang, ChangZai
Copyright Year	2012
Abstract	After the Yushu M $_{S}$7.1 earthquake on April 14, 2010, a large number of aftershocks were recorded by the surrounding permanent network and temporary seismic stations. Due to the distribution of stations, knowledge about velocity structure, the reliability of seismic phases, and so on, the location result from conventional method is usually of low precision, from which it is difficult to recognize the spatial and temporal distribution and the trends of aftershock activity. In this paper, by using teleseismic waveforms recorded by permanent station, the seismic velocity structure beneath the vicinity is obtained from receiver function stacking and inversion methods. And the Yushu earthquake sequences are relocated from seismic phase data by HypoDD. The results show that the Yushu M $_{S}$7.1 earthquake occurred at 13 km depth; the aftershock sequences were distributed mainly in the NWW along the Garzê-Yushu fault, and most aftershocks were concentrated in a 100 km length and 5–20 km depth. Combined with the velocity structure, it can be inferred that the earthquake mainly destroys the high-velocity layer of the upper crust. In the west of the seismic fault near (33.3°N, 96.2°E), the aftershock sequences were distributed like a straight column, suggesting there was a comminuted break from 25km depth to the ground.
Starting Page	182
Ending Page	191
Page Count	10
File Format	PDF
ISSN	16747313
Journal	Science in China Series D: Earth Sciences
Volume Number	56
Issue Number	2
e-ISSN	18691897
Language	English
Publisher	SP Science China Press
Publisher Date	2012-07-02
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Yushu earthquake double-difference algorithm aftershock distribution Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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