| Characteristics and Implication of the Earthquake Swarm Occurred in Fuzhou in September 1999 |
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| 作者姓名： | Yuan Dingqiang Wang Jian |
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| 作者单位： | [1]SeismologicalBureauofJiangxiProvince,Nanchang330039,China [2]InstituteofGeophysics,CSB,Beijing100081,China |
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| 摘 要： | on Septmeber 23,1999,an earthquake swarm occured in Fuzhou,Because the swarm occurred in the region where earthquaks occurred scarcely before and very close to the center of the city as well as shortly after the Jiji earthquake with Ms7.6 in Taiwan,September 21,1999,has aroused interest broadly.In this paper,we analyzed the characteristics of spatial and temporal distribution of the earthquake swarm and validated magnitude-number constituent of the swarm is special.In present theory,the earthquake swarm means that a small scale macro original rupture has formed in the layer of the crust in Fuzhou region where moderately strong earthquake risk exists.
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| 关 键 词： | 地震活动性 地震群 1999年 福州市 地震危险性 |
Characteristics and Implication of the Earthquake Swarm Occurred in Fuzhou in September 1999 |
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| Yuan Dingqiang,Wang Jian.Characteristics and Implication of the Earthquake Swarm Occurred in Fuzhou in September 1999[J].Earthquake Research in China,2001,15(2):146-154. |
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| Authors: | Yuan Dingqiang and Wang Jian |
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| Institution: | Yuan Dingqiang and Wang Jian1) Seismological Bureau of Jiangxi Province,Nanchang 330039,China 2)Institute of Geophysics,CSB,Beijing 100081,China |
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| Abstract: | On September 23, 1999, an earthquake swarm occurred in Fuzhou. Because the swarm occurred in the region where earthquakes occurred scarcely before and very close to the center of the city as well as shortly after the Jiji earthquake with MS7.6 in Taiwan, September 21, 1999, has aroused interest broadly. In this paper, we analyzed the characteristics of spatial and temporal distribution of the earthquake swarm and validated magnitude-number constituent of the swarm is special. In present theory, the earthquake swarm means that a small scale macro original rupture has formed in the layer of the crust in Fuzhou region where moderately strong earthquake risk exists. |
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| Keywords: | Seismicity Earthquake swarm Magnitude-number structure Earthquake risk |
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