ANALYSIS UPON DYNAMIC RANGE AND MONITORING CAPABILITY OF WFSD DIGITAL SEISMIC NETWORK OF THE LONGMENSHAN FAULT ZONE

MA Xiu-min; PENG Hua; JIANG Jing-jie; PENG Li-guov

Volume 17 Issue 1

Mar. 2011

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Article Navigation > Journal of Geomechanics > 2011 > 17(1): 27-40

MA Xiu-min, PENG Hua, JIANG Jing-jie, et al., 2011. ANALYSIS UPON DYNAMIC RANGE AND MONITORING CAPABILITY OF WFSD DIGITAL SEISMIC NETWORK OF THE LONGMENSHAN FAULT ZONE. Journal of Geomechanics, 17 (1): 27-40.

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ANALYSIS UPON DYNAMIC RANGE AND MONITORING CAPABILITY OF WFSD DIGITAL SEISMIC NETWORK OF THE LONGMENSHAN FAULT ZONE

MA Xiu-min^{1, 2
,},
PENG Hua^{1, 2},
JIANG Jing-jie^{1, 2},
PENG Li-guov¹

1.
Key Lab of Neotectonic Movement and Geohazards, Ministry of Land and Resources, Beijing 100081, China
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

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Abstract

Abstract

After the 5.12 earthquake in Wenchuan, the temporary digital seismic network has been layout in time in Longmenshan fault zone in order to monitor earthquake trends and probe into the large-scale tectonic stress field activity. Digital seismic network is made of 11 digital seismic instruments, and which are arranged at north eastern margin and southwestern side of Longmenshan fault zone. A certain number of data from observation stations are randomly selected in order to analyze the monitoring capability and dynamic range of WFSD digital seismic network. The dynamic noises of station base are acquired through the Fourier Transform and power spectral density analysis. And then, the dynamic range of observing systems and monitoring capacity of network are analyzed. WFSD digital seismic network has a monitoring M_L1.5 micro-seismic capacity in Longmenshan fault zone based on Comparing the computing results with the record of a large number of micro-seismic. And it basically accorded with the results of that by Seismological Bureau Networks Center of China. Therefore, WFSD digital seismic network can provide a basic observing datum for the deformation mechanism research of Longmenshan fault zone.
- Longmenshan fault,
- Wenchuan earthquake Fault Science Drilling,
- digital seismic network,
- monitoring capability,
- dynamic range

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