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《Earthquake》 2004-01
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The focal mechanism determinations of moderate-small earthquakes using the first motion and amplitude ratio of P and S wave

LIU Jie~1,ZHENG Si-hua~1,KANG Ying~2,CHOU Yong-qing~3 (1.Center for Analysis and Prediction, CSB, Beijing 100036; 2. Guangdong Seismological Bureau, Guangzhou 510070; 3. Shanxi Seismological Bureau, Taiyuan 030025, China)  
The focal mechanisms of moderate-small earthquakes are calculated tentatively using digital seismic wave data in some provincial digital seismic networks based on the program of focal mechanism determinations combing the first motion of P, SV and SH waves with their amplitude ratio, which is recently developed by Snoke. Some results are compared with the results obtained by P first motion data. It shows that the method is feasible, and it provides a new possibility using digital seismic data in earthquake prediction.
【Fund】: 国家重大基础研究前期研究专项(2002CCD01700);; "十五"地震预报科技攻关项目(2001BA601B02 03 04)
【CateGory Index】: P315
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