| Relocation of Microearthquakes in Beijing and Its Neighboring Areas and Its Tectonic Implications |
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| 作者姓名： | Wang Suyun Xu Zhonghuai Yu Yanxiang and Huan WenlinInstitute of Geophysics SSB Beijing China |
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| 作者单位： | Wang Suyun，Xu Zhonghuai，Yu Yanxiang，and Huan WenlinInstitute of Geophysics，SSB，Beijing 100081，China |
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| 基金项目： | This project was sponsored by the State Science and Technology
Commission and State Seismological Bureau (85-907-04-01),China.Contribution
No.95A0051.Instirute ofGeophysics,SSB,China. |
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| 摘 要： | The 348 microearthquakes that occurred in Beijing and its neighboring areas(39°-41°,114°-117°E)during 1979 to March of 1992 are relocated in this study.Precision of hypocenter locations is improved by rechecking and supplementing readings of arriving times of the seismic phases used,testing and selecting the appropriate crustal model,and modifying the computer program.After the relocation,the number of earthquakes with focal depth determination has been increased to 313 from the previous 132.The overall average RMS residual of the observational arrival times has been reduced to 0.45±0.18 s from the previous value of 0.80±0.40 s.Nearly 10% of the relocated hypocenters,which are mostly in border regions of the area covered by the Beijing Telemetered Seismic Network,have been shifted more than 10 km.Epicenters of the relocated earthquakes are concentrated in the intermountainous basins,such as the Huai'an,Xuanhua,Huailai,and Zhuolu basins,and are related with the basin boundary faults between mountai
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Relocation of Microearthquakes in Beijing and Its Neighboring Areas and Its Tectonic Implications |
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| Wang Suyun,Xu Zhonghuai,Yu Yanxiang,and Huan WenlinInstitute of Geophysics,SSB,Beijing ,China.Relocation of Microearthquakes in Beijing and Its Neighboring Areas and Its Tectonic Implications[J].Earthquake Research in China,1996(1). |
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| Authors: | Wang Suyun Xu Zhonghuai Yu Yanxiang and Huan WenlinInstitute of Geophysics SSB Beijing China |
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| Institution: | Wang Suyun,Xu Zhonghuai,Yu Yanxiang,and Huan WenlinInstitute of Geophysics,SSB,Beijing 100081,China |
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| Abstract: | |
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| Keywords: | Seismic location Focal depth Epicentral distribution Active fault |
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