|
|
|
| Preliminary analysis of teleseismic receiver functions of the Ningxia and its adjacent area |
| Xiaoqing Xu1, Xuzhang Shen2, Chang Ming1, Guofu Luo1, Yao Lin1 |
1 Earthquake Administration of Ningxia Hui Autonomous Region, Yinchuan 750001, China
2 Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China |
|
|
|
|
Abstract The teleseismic receiver functions of digital seismic network of Ningxia and its adjacent area are calculated with two different Gauss filter factors. The accuracy and stability of the receiver functions are discussed. The h-k stacking method is applied to estimate the crustal thickness and velocity ratio beneath seismic stations. The results indicate that there are sharp changes of crustal thickness and velocity ratio in the studied region. This region is located in the northeastern margin of Tibet, and also a junction of several first-grade blocks. The large contrast of crustal structure in this region is considered to be resulted from the interaction of these blocks. Our results are helpful to construct the completed model of the formation and evolution of the Tibet. Some local structures are also discussed combining with the geological faults.
|
|
Received: 07 October 2011
Published: 10 February 2012
|
| Fund:the basic research and development fund from Institute of Earthquake Science, China Earthquake Administration (grant No. 2011IESLZ05) and the National Natural Science Foundation of China (grant No. 40904014) |
|
Corresponding Authors:
Xuzhang Shen
E-mail: shenxzh@gmail.com
|
|
|
|
|
|
|
