地震学报（英文版）2004，Vol.17Issue(2)：222-229,8.
Study on the characteristics of earthquake's impact on cities
Study on the characteristics of earthquake's impact on cities
摘要
Abstract
Firstly, the impact of historical earthquakes on 34 China province-level capital cities is evaluated by using historical earthquake catalog. The distribution of affected intensity shows, about 53% of cities have even not been affected by earthquake intensity Ⅵ, and 44% of cities have been hit by earthquake intensity Ⅶ to Ⅸ. For most of the cities, occurrence frequency of affected intensity Ⅵ is usually higher than that of affected intensity larger thanⅥ, and the value of affected intensity with maximal occurrence frequency may be very different among cities. So both the maximal affected intensity and the affected intensity with maximal occurrence frequency should be taken into account when the prevention seismic intensity needs to be determined. Secondly, considering the incompleteness of records of historical earthquakes, a method of earthquake catalog computer simulation is introduced to study the features of affected intensity of big cities. 69 county-level cities of Fujian Province are selected to be statistical objects. The statistical result shows, for different risk levels the seismic intensity changes greatly among cities, the seismic intensity of 2% probability of exceedance in 50 years can be regarded as the characteristic affected intensity of city, and can be the basis of determining the city special earthquake prevention level and a proper indicator of future earthquake′s impact on cities.关键词
city group/affected intensity/characteristics earthquake/probability of exceedanceKey words
city group/affected intensity/characteristics earthquake/probability of exceedance分类
天文与地球科学引用本文复制引用
潘华,赵凤新,高孟潭..Study on the characteristics of earthquake's impact on cities[J].地震学报（英文版）,2004,17(2):222-229,8.基金项目
A Public Benefit Foundation of the Ministry of Science and Technology of China.Contribution No. 04FE1005, Institute of Geophysics, China Earthquake Administration. （）
