Spatial damage distribution of August 16, 2003, Inner Mongolia, China, M S=5.9 earthquake and analysis |
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| Authors: | Gao Meng-tan Xu Li-sheng Guo Wen-sheng Wan Bo and Yu Yan-xiang |
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| Institution: | (1) Institute of Geophysics, China Earthquake Administration, 100081 Beijing, China;(2) Earthquake Administration of Inner Mongolia Autonomous Region, 010051 Hohhot, China;(3) Earthquake Administration of Liaoning Province, 110031 Shenyang, China |
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| Abstract: | The spatial damage distribution of August 16, 2003, Inner Mongolia, China, M
S=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 distribution 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.
Foundation item: The Special Funds for Major State Basic Research Project (2002CB412706).
Contribution No. 05FE3009, Institute of Geophysics, China Earthquake Administration. |
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| Keywords: | Inner Mongolia earthquake damage distribution focal mechanism origin of damage |
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