ON MINI-EARTHQUAKE SWARM OCCURRED IN SEPTEMBER, 2006 IN XIETAN, ZIGUI COUNTY
Luo Junqiu ;and Xue Junrong
Earthquake Administration of Hubei Province, Wuhan 430071
Abstract The mini-earthquake swarm occurred during Sep.17-22, 2006 in the west of Xietan town, Zigui county. The ML1.8 earthquake occurred at 21:10 of Sep.20, 2006 was strongest one among them. The analysis of related data shows that the epicenters of this earthquake swarm are concentrated in the west of landslide broken belt along coal bed of Xiangxi stratum between old Shimen village and old Xietan town, the focal depth is within 0.5 km above sealevel,the main focal mechanism solutions are positive inclinedsliding; the best frequency of this earthquake swarms amplitude spectrum is concentrated at 2 Hz,it can be concluded that this earthquake swarm is minecollapsed earthquakes which is effected by the earth’s surface layer gravity, and this swarm includes several tiny landslides of shallow layer.
Key words ：
the mini-earthquake swarm at Xietan town
seismic wave
waveform characteristic
focal mechanism solution
amplitude spectrum
Received: 01 January 1900
Corresponding Authors:
Luo Junqiu
Cite this article:
Luo Junqiu,and Xue Junrong. ON MINI-EARTHQUAKE SWARM OCCURRED IN SEPTEMBER, 2006 IN XIETAN, ZIGUI COUNTY[J]. , 2007, 27(专刊): 26-30.
Luo Junqiu,and Xue Junrong. ON MINI-EARTHQUAKE SWARM OCCURRED IN SEPTEMBER, 2006 IN XIETAN, ZIGUI COUNTY[J]. jgg, 2007, 27(专刊): 26-30.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2007/V27/I专刊/26
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