| Spatial damage distribution of August 16,2003,Inner Mongolia,China,M_S=5.9 earth-quake and analysis |
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| 作者姓名： | 高孟潭 许力生 郭文生 万波 俞言祥 |
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| 作者单位： | Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Earthquake Administration of Inner Mongolia Autonomous Region，Hohhot 010051，China，Earthquake Administration of Liaoning Province，Shenyang 110031，China |
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| 基金项目： | The Special Funds for Major State Basic Research Project (2002CB412706). |
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| 摘 要： | Introduction The ground motion is generally estimated by attenuation relation in seismic hazard assesment.The attenuation relation is usually the function of earthquake magnitude and distance.Actually the focal mechanism and other source parameters may also have significant impacts on the ground motion,especially in the near-source region.Recent post-earthquake investigations show that the damages have close relation with the closest fault-plane distance.On August16,2003,a MS=5.9earthquake o…
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Spatial damage distribution of August 16, 2003, Inner Mongolia, China, MS=5.9 earth-quake and analysis |
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| GAO Meng-tan,XU Li-sheng,GUO Wen-sheng,Wan Bo,YU Yan-xiang.Spatial damage distribution of August 16,2003,Inner Mongolia,China,M_S=5.9 earth-quake and analysis[J].Acta Seismologica Sinica(English Edition),2005,18(2). |
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| Authors: | GAO Meng-tan XU Li-sheng GUO Wen-sheng Wan Bo YU Yan-xiang |
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| Abstract: | The spatial damage distribution of August 16, 2003, Inner Mongolia, China, MS=5.9 earthquake is summarized through field investigation. The moment tensor solution and focal mechanism are inverted using the digital long-period waveform records of China Digital Seismograph Network (CDSN). The relation between the spatial damage distribution and focal mechanism is analyzed according to the focal mechanism, the aftershock distribu- tion and the spatial damage distribution. The possible relation between the characteristics of ground motion and the tectonic background of the source region is discussed in terms of the global ground motion records, historical earthquake documents and the damage distribution. Investigation reveals that the meizoseismal region is in east-west direction, which is consistent with the nodal plane of focal mechanism inversion. The meizoseismal area is relatively large and the damage of single-story adobe houses or masonry houses is more severe. This may have relations with local seismotectonic environment. |
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| Keywords: | Inner Mongolia earthquake damage distribution focal mechanism origin of damage |
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