[1]YAN Chunheng,ZHOU Bin,GUO Peilan,et al.Double-difference Relocation of Earthquakes in Longtan Reservoir Combined with Waveform Cross-Correlation Technique[J].Journal of Seismological Research,2016,39(03):427-435.
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Double-difference Relocation of Earthquakes in Longtan Reservoir Combined with Waveform Cross-Correlation Technique
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
39
Number of periods:
2016 03
Page number:
427-435
Column:
Public date:
2016-07-23
- Title:
- Double-difference Relocation of Earthquakes in Longtan Reservoir Combined with Waveform Cross-Correlation Technique
- Keywords:
- reservoir-induced seismicity; precise relocation of earthquake; double-difference location algorithm; waveform cross-correlation; Longtan Reservoir
- CLC:
- P315.7
- DOI:
- -
- Abstract:
- Using the double-difference location algorithm combined with waveform cross-correlation technique, we relocated 3 682 earthquakes occurred around Longtan Reservoir from Sep.30, 2006 to May.26, 2013. The relocating results are more precise than that of network catalogue, and its logically mean error is less than 10 m. The precise location results show that, the distribution of mid-small earthquakes shows obvious cluster in the 6 regions of Luotuo, Bamao, Lalang, Bashou, Buliuhe and Tian'e County after impounding. The distribution range of each earthquakes cluster is no more than 10 km and the focal depths dominantly distributed in 4～9 km, and its advantageous spread direction is consistent to the strike or trend of main faults which pass through the earthquakes cluster. These results indicate that the earthquakes in the reservoir basically distribute in the range of less than 10 km around the rivers and faults, which shows the typical “double ten” characteristics of reservoir-induced seismic activity. The obtained research results are useful to predict earthquake induced by Longtan Reservoir reconstruction project and could provide the basis for seismic safety assessment.
- References:
- -
- Similar References:
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Last Update:
1900-01-01