| Seismic Intensity Zoning Map of China (1990) and Its Explanation |
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| 作者姓名： | Compiling Committee of Seismic Intensity Zoning Map of China |
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| 摘 要： | The Seismic Intensity Zoning Map of China(1990)was based on the probabilistic method of seismic hazard analysis.In compiling the map,the characteristics of inhomogeneity of earthquake distribution both in space and time in China are considered sufficiently,and some necessary modifications in the model of seismic hazard analysis are carried out.Based on the analysis of the seismic activity and seismotectonic environment,26 seismic provinces are divided first as the statistical elements of the seismicity analysis; the seismic potential source areas are then divided in the seismic provinces.The 733 potential source areas with various upper limit magnitudes have been divided in the country.According to the reliable time domain of earthquake data with various magnitude intervals,the b values in magnitude-frequency relationship are calculated in the seismic provinces.According to the analysis of the inhomogeneity of seismicity distribution both in space and time,the annual average occurrence rates of the eart
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Seismic Intensity Zoning Map of China (1990) and Its Explanation |
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| Compiling Committee of Seismic Intensity Zoning Map of China.Seismic Intensity Zoning Map of China (1990) and Its Explanation[J].Earthquake Research in China,1994(4). |
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| Authors: | Compiling Committee of Seismic Intensity Zoning Map of China |
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| Institution: | Compiling Committee of Seismic Intensity Zoning Map of China |
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| Abstract: | The Seismic Intensity Zoning Map of China(1990)was based on the probabilistic method of seismic hazard analysis.In compiling the map,the characteristics of inhomogeneity of earthquake distribution both in space and time in China are considered sufficiently,and some necessary modifications in the model of seismic hazard analysis are carried out.Based on the analysis of the seismic activity and seismotectonic environment,26 seismic provinces are divided first as the statistical elements of the seismicity analysis; the seismic potential source areas are then divided in the seismic provinces.The 733 potential source areas with various upper limit magnitudes have been divided in the country.According to the reliable time domain of earthquake data with various magnitude intervals,the b values in magnitude-frequency relationship are calculated in the seismic provinces.According to the analysis of the inhomogeneity of seismicity distribution both in space and time,the annual average occurrence rates of the earthquake in the future and seismic spatial distribution functions are obtained.Based on the ellipse intensity attenuation models of different regions,the earthquake intensity values with various probabilities of exceedance are calculated for about 30,000 nodes for the whole country.On the basis of the above-mentioned studies,a seismic intensity zoning map(scale with 1:4,000,000)has been compiled with 10% of probability of exceedance during a period of 50 years.This zoning map can be applied to earthquake-resistant design of small andmedium-sized civil engineering buildings,programs of national land use,the countermeasure for earthquake disaster mitigation and prevention. |
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| Keywords: | Seismic intensity Zoning map Seismic hazard Probability analysis Probability of exceedance |
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