Seismic microzonation: Difference between revisions
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'''Seismic microzonation''' is defined as the process of subdividing an area into zones with respect to geological characteristics of the sites, so that seismic hazards at different locations within the city can correctly be identified. Microzonation provides the basis for site-specific risk analysis, which can assist in the mitigation of [[earthquake]] damages <ref>[1]</ref>. |
'''Seismic microzonation''' is defined as the process of subdividing an area into zones with respect to geological characteristics of the sites, so that seismic hazards at different locations within the city can correctly be identified. Microzonation provides the basis for site-specific risk analysis, which can assist in the mitigation of [[earthquake]] damages <ref>[1]</ref>. |
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Regional geology can have a large effect on the characteristics of ground motion <ref>[2]</ref>. The site response of the ground motion may vary in different locations of the city according to the local geology. A seismic zonation map for a whole country may, therefore, be inadequate for detailed seismic hazard assessment of the cities. This necessitates the development of microzonation maps for big cities for detailed seismic hazard analysis <ref>[4]</ref>. Microzonation maps can serve as a basis for evaluating site-specific risk analysis, which is essential for critical structures like nuclear power plants, subways, bridges, elevated highways, sky trains and dam sites. Many large cities around the world have put effort into developing microzonation maps for the better understanding of [[earthquake]] hazard within the cities <ref>[5]</ref>. |
Regional geology can have a large effect on the characteristics of ground motion <ref>[2]</ref>. The site response of the ground motion may vary in different locations of the city according to the local geology. A seismic zonation map for a whole country may, therefore, be inadequate for detailed seismic hazard assessment of the cities. This necessitates the development of microzonation maps for big cities for detailed seismic hazard analysis <ref>[4]</ref>. Microzonation maps can serve as a basis for evaluating site-specific risk analysis, which is essential for critical structures like nuclear power plants, subways, bridges, elevated highways, sky trains and dam sites. Many large cities around the world have put effort into developing microzonation maps for the better understanding of [[earthquake]] hazard within the cities <ref>[5]</ref>. |
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Revision as of 05:40, 19 May 2008
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Seismic microzonation is defined as the process of subdividing an area into zones with respect to geological characteristics of the sites, so that seismic hazards at different locations within the city can correctly be identified. Microzonation provides the basis for site-specific risk analysis, which can assist in the mitigation of earthquake damages [1].
Regional geology can have a large effect on the characteristics of ground motion [2]. The site response of the ground motion may vary in different locations of the city according to the local geology. A seismic zonation map for a whole country may, therefore, be inadequate for detailed seismic hazard assessment of the cities. This necessitates the development of microzonation maps for big cities for detailed seismic hazard analysis [3]. Microzonation maps can serve as a basis for evaluating site-specific risk analysis, which is essential for critical structures like nuclear power plants, subways, bridges, elevated highways, sky trains and dam sites. Many large cities around the world have put effort into developing microzonation maps for the better understanding of earthquake hazard within the cities [4].
References
[2] Seed, H. B., Romo, M. P., Sun, J. I., Jaime, A., and Lysmer, J., 1988. The Mexico earthquake of September 19, 1985-Relationships between soil conditions and earthquake ground motions. Earthquake Spectra, Vol. 4, No. 4, pp. 687-729
[3]Schell, B. A. et al., 1978. Seismotectonic Microzonation for Earthquake Risk Reduction. Proc. of Second International Conf. on Microzonation for Safer Construction – Research and Application, vol. I, pp 571-583
[4] Shima, E., 1978. Seismic Microzonation Map of Tokyo. Proc. of Second International Conf. on Microzonation for Safer Construction – Research and Application, vol. I, pp 433-443