ON MINIMUM 1D VELOCITY MODEL APPLIED IN THREE GORGES RESERVOIR AREA
Zhao Xu 1) ;Li Qiang 1,2,3) ;and Cai Jin’an 3)
1)Institute of Seismology ,CEA, Wuhan 4300712)National Earthquake Infrastructure Service,Beijing 1000363)Institute of Earthquake Science, CEA, Beijing 100036
Abstract Using 7 330 P arrivals and 3 524 S arrivals from 490 events observed by the Three Gorges seismic network, the minimum 1D velocity model including P wave model, S wave model and station corrections is obtained with the Kissling method and then the model is applied to precise earthquake location. The residual RMS of the relocated events has reduced from 0.56 s to 0.41 s, thus great improvement of the accuracy of hypocenter location has been made in the east, north, and vertical direction. The result indicates that the minimum 1D velocity model is better than other models.
Key words ：
the Three Gorges reservoir
minimum 1D velocity model
station correction
earthquake location
residual analysis
Received: 01 January 1900
Corresponding Authors:
Zhao Xu
Cite this article:
Zhao Xu ,Li Qiang,and Cai Jin’an . ON MINIMUM 1D VELOCITY MODEL APPLIED IN THREE GORGES RESERVOIR AREA[J]. , 2007, 27(专刊): 1-7.
Zhao Xu ,Li Qiang,and Cai Jin’an . ON MINIMUM 1D VELOCITY MODEL APPLIED IN THREE GORGES RESERVOIR AREA[J]. jgg, 2007, 27(专刊): 1-7.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2007/V27/I专刊/1
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