| Distribution characteristics of historical earthquake classes in Jiangsu Province and South Huanghai Sea region |
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| 作者姓名： | 田建明 徐徐 谢华章 杨云 丁政 |
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| 作者单位： | Earthquake Administration of Jiangsu Province，Nanjing 210014，China，Earthquake Administration of Nanjing City，Nanjing 210014，China，Earthquake Administration of Jiangsu Province，Nanjing 210014，China，Earthquake Administration of Jiangsu Province，Nanjing 210014，China，Earthquake Administration of Jiangsu Province，Nanjing 210014，China |
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| 基金项目： | Scientific and Technological Project of Social Development of Jiangsu Province (BS2002068). |
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| 摘 要： | Introduction In the region of Jiangsu Province and South Huanghai Sea, only 14 M4.7 earthquakes (ex-cluding aftershocks and other main shocks in the swarm) occurred from 1970 when microseismic observation net was built. It is very difficult to objectively distinguish the law of earthquake series distribution in a region based on these data. However, from the antiquity in China, Jiangsu is an area with flourish economy and a galaxy of talent and culture. In Jiangsu, historical data are so c…
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| 收稿时间： | 14 October 2003 |
| 修稿时间： | 16 March 2004 |
Distribution characteristics of historical earthquake classes in Jiangsu Province and South Huanghai Sea region |
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| Tian Jian-ming , Xu Xu , Xie Hua-zhang , Yang Yun and Ding Zheng.Distribution characteristics of historical earthquake classes in Jiangsu Province and South Huanghai Sea region[J].Acta Seismologica Sinica(English Edition),2004,17(4):480-489. |
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| Authors: | Tian Jian-ming Xu Xu Xie Hua-zhang Yang Yun and Ding Zheng |
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| Institution: | 1. Earthquake Administration of Jiangsu Province, Nanjing 210014, China
2. Earthquake Administration of Nanjing City, Nanjing 210014, China |
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| Abstract: | According to the analysis on the characteristics of historic earthquakes in Jiangsu Province and South Huanghai Sea region, the historical earthquakes in the studied area are divided into two kinds of comparatively safe class and comparatively dangerous class. Then the statistical result of earthquake class, the characteristics of geo-graphical distribution and geological structures are studied. The study shows: a) In Jiangsu Province and South Huanghai Sea region, the majority of historical strong earthquakes belong to comparatively safe class, only 13.8% belong to comparatively dangerous class; b) Most historical earthquakes belong to comparatively safe class in the land area of Jiangsu, eastern sea area of Yangtze River mouth and northern depression of South Huanghai Sea region. However, along the coast of middle Jiangsu Province and in the sea area of South Huanghai Sea, the distribution of historical earthquake classes is complex and the earthquake series of comparatively dan-gerous class and comparatively safe class are equivalent in number; c) In the studied area, the statistical results of historical earthquake classes and the characteristics of spatial distribution accord very well with the real case of present-day earthquake series. It shows that the seismic activity in the region has the characteristic of succession, and the result from this study can be used as a reference for early postseismic judgment in the earthquake emer-gency work in Jiangsu Province. |
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| Keywords: | historical earthquake principle for classification distribution characteristics Jiangsu Province South Huanghai Sea region |
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