STUDY ON ACCURATE RELOCATION OF EARTHQUAKES NEAR
ZIGUI COUNTY IN THREE GORGES
1） Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071
2） Wuhan Base of Institute of Crustal Dynamics, CEA, Wuhan 430071
3） Institute of Geophysics, CEA, Beijing 100081
Abstract Using double difference location method to relocate 73 earthquakes, which the magnitudes are greater than M1.0 and the earthquakes were recorded by the telemetry digital seismological network near Zigui county in 2008 to 2011, and we obtained 58 location results. The results show that residual decreases, controlling epicenter distribution and focal depth are improved obviously after accurate relocation. The average error of relocation is 0.42 km in the NS direction, 0.63 km in the EW direction and 1.53 km in the vertically direction. About 74% earthquakes distributed among the depth of 7 km, the mean depth is 6.8 km. Combined with seismicity, the earthquake tendency of Zigui county is analyzed.
Wei Guichun,Zhang Lifen,Shen Xuelin et al. STUDY ON ACCURATE RELOCATION OF EARTHQUAKES NEAR
ZIGUI COUNTY IN THREE GORGES[J]. jgg, 2013, 33(Supp.1): 68-70.
Wei Guichun,Zhang Lifen,Shen Xuelin et al. STUDY ON ACCURATE RELOCATION OF EARTHQUAKES NEAR
ZIGUI COUNTY IN THREE GORGES[J]. jgg, 2013, 33(Supp.1): 68-70.
