ON WAVE VELOCITY RATIO(Vp/Vs) IN BADONG AREAAFTER IMPOUNDMENT OF THREE GORGES RESERVOIR
Chen Junhua 1,2) ; Gan Jiasi 2) ; Li Puli 2) ; Xue Junrong 2) ; Li Feng 2) ;and Li Yin 2)
1)University of Science and Technology of China,Hefei 2300262)Institute of Seismology, CEA, Wuhan 430071
Abstract The multistation method is applied to calculate wave velocity ratio and its coefficient of earthquakes above ML2.0 in Badong area after the impoundment of the Three Gorges reservoir. The result shows that the variations of wave velocity ratio are related to the shallow epicenters,fracture growing and infiltration diffusion of water in the area. It is shown that the ratio decreases in the dilatancydiffusion phase and increases before the earthquake .The area is rich in underground water so the wave velocity ratio is higher than that in some other area.
Key words ：
Three Gorges reservior
Badong area
induced reservoir earthquake
multi-station method
wave velocity ratio
Received: 01 January 1900
Corresponding Authors:
Chen Junhua
Cite this article:
Chen Junhua,Gan Jiasi ,Li Puli et al. ON WAVE VELOCITY RATIO(Vp/Vs) IN BADONG AREAAFTER IMPOUNDMENT OF THREE GORGES RESERVOIR[J]. , 2007, 27(专刊): 12-14.
Chen Junhua,Gan Jiasi ,Li Puli et al. ON WAVE VELOCITY RATIO(Vp/Vs) IN BADONG AREAAFTER IMPOUNDMENT OF THREE GORGES RESERVOIR[J]. jgg, 2007, 27(专刊): 12-14.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2007/V27/I专刊/12
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