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| Crustal thickness and vP/vS ratio in Shanxi Graben, China |
| Yutao Shi, Yuan Gao, Honglin Jing |
| Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, People’s Republic of China |
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Abstract Shanxi Graben is in the middle part of the North China Craton, from south to north. With the teleseismic data recorded by Regional Seismograph Networks and the temporary ZBnet-W Seismic Array around east part of Shanxi Graben, we measured the crustal thickness and vP/vS ratio beneath each station using the H-κ stack of receiver functions. The observed crustal thickness shows obvious lateral variation, increasing gradually from east to west in the Shanxi Graben. Beneath the Shanxi Graben the crust is relatively thicker than both sides of the south and the north. In addition, the vP/vS ratio in the north of study zone is higher than that in the south. The highest vP/vS ratio exists in the crust of the Xinding basin and the Datong basin. Our study also suggests that high velocity ratio might result from the strong activities of the magmation and volcanism.
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Received: 22 September 2014
Published: 30 November 2014
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| Fund:the National Natural Science Foundation of China (No. 41230210), the Projects of International Cooperation and Exchanges from the Ministry of Science and Technology of China (Grant No. 2010DFB20190), and the Fundamental Research Funds for the Institute of Earthquake Science, China Earthquake Administration |
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Corresponding Authors:
Yutao Shi
E-mail: Shiyutao3995@126.com
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