| 太康4．7级地震前地震活动图像和趋势分析 |
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| 引用本文： | 林眉,刘希强,郑建常,徐长朋,冀东普.太康4．7级地震前地震活动图像和趋势分析[J].地震地磁观测与研究,2011,32(4):7-11. |
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| 作者姓名： | 林眉 刘希强 郑建常 徐长朋 冀东普 |
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| 作者单位： | 中国济南250014 山东省地震局 |
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| 摘 要： | 对苏、鲁、皖、豫交界地区地震活动进行研究，指出该区2006年10月-2010年10月出现一个长轴约230km的3级地震空区。该空区及附近地区存在多项中期异常，即ML≥3地震活动具有频度高、能量强，中等地震震中空间分布相对集中及低b值等。讨论认为，苏、鲁、皖、豫交界地区存在多项中期异常，与2004年10月24日太康4．7级地震的强度不匹配，未来具有发生中强以上地震的危险。
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| 关 键 词： | 地震空区 应变释放 集中性 纵集性 |
Seismicity patterns and trends analysis before the Taikang Ms 4.7 earthquake |
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| Lin Mei,Liu Xiqiang,Zheng Jianchang,Xu Changpeng,Ji Dongpu.Seismicity patterns and trends analysis before the Taikang Ms 4.7 earthquake[J].Seismological and Geomagnetic Observation and Research,2011,32(4):7-11. |
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| Authors: | Lin Mei Liu Xiqiang Zheng Jianchang Xu Changpeng Ji Dongpu |
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| Institution: | (Earthquake Administration of Shandong Province, Jinan 250014, China) |
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| Abstract: | In this paper, the seismic activity of Jiangsu, Shandong, Anhui, Henan border area has been studied. We emphasize that Ms 3 seismic gap about 230 km long axis appear in this area from October 2006 to October 2010. It is put forward in this paper that the seismic gap and the surrounding area exist a number of medium-term anomalies, that is, Ms≥ 3 earthquake activities with high frequency, high energy, the relative concentration of moderate earth- quake epicenter in the spatial distribution and low b value and so on. Then the conclusion being drown here is that the number of medium-term anomalies in the Anhui, Henan border area does not match Taikang Ms 4. 7 earthquake strength, so this region exist risk of moder-ately strong earthquake. |
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| Keywords: | seismic gap strain release concentration time concentration |
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