Rayleigh Wave Group Velocity Distribution in Ningxia

Hongyi LI; Xin LIU; Xinfu LI; Juqin SHENG; Xinhua CAI; Tongli WANG

doi:10.1007/s12583-011-0162-0

Volume 22 Issue 1

Feb 2011

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Journal of Earth Science > 2011 > 22(1): 117-123.

Hongyi LI, Xin LIU, Xinfu LI, Juqin SHENG, Xinhua CAI, Tongli WANG. Rayleigh Wave Group Velocity Distribution in Ningxia. Journal of Earth Science, 2011, 22(1): 117-123. doi: 10.1007/s12583-011-0162-0

Citation:

Hongyi LI, Xin LIU, Xinfu LI, Juqin SHENG, Xinhua CAI, Tongli WANG. Rayleigh Wave Group Velocity Distribution in Ningxia. Journal of Earth Science, 2011, 22(1): 117-123. doi: 10.1007/s12583-011-0162-0

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Rayleigh Wave Group Velocity Distribution in Ningxia

doi: 10.1007/s12583-011-0162-0

1.
Key Laboratory of Geo-detection (China University of Geosciences, Beijing), Ministry of Education, Beijing 100083, China
2.
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
3.
Earthquake Administration of Ningxia Hui Autonomous Region, Yinchuan 750001, China
4.
Earthquake Administration of Beijing Municipality, Beijing 100080, China

Funds:

the Open Fund of Key Laboratory of Geo-detection (China University of Geosciences, Beijing), Ministry of Education of China GDL0708

More Information

Corresponding author: Hongyi Li, lih@cugb.edu.cn
Received Date: 15 Apr 2010
Accepted Date: 25 Aug 2010
Publish Date: 01 Feb 2011

Abstract

Abstract

In this article, seven months ambient noise data and 10 events recorded at seven digital stations from the Ningxia (宁夏) regional seismic network and 5 500-t controlled source explosion data recorded by 15 temporary and 7 permanent seismic stations are used to measure dispersion curves of fundamental mode Rayleigh waves. The study region was divided into grids with 0.1°×0.1°; group velocity distributions of Rayleigh waves from 6–22 s were determined with the Occam's inversion technique. These velocity distribution maps show the lateral velocity variations in the study area, and the velocity structures are correlated with surface geology and tectonic units. The Yinchuan (银川) basin is clearly featured with low velocities, and the Helan (贺兰) Mountain and southern mountain areas are revealed with high velocities.
- Rayleigh wave,
- group velocity,
- ambient noise,
- explosion

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References

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