| “霍山窗”地区现代构造应力场研究 |
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| 引用本文： | 倪红玉,刘泽民,洪德全,李玲利,郑先进,徐鑫.“霍山窗”地区现代构造应力场研究[J].中国地震研究,2013,27(4):467-478. |
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| 作者姓名： | 倪红玉 刘泽民 洪德全 李玲利 郑先进 徐鑫 |
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| 作者单位： | 安徽省地震局,合肥市长江西路558号，230031;安徽省地震局,合肥市长江西路558号，230031;安徽省地震局,合肥市长江西路558号，230031;安徽省地震局,合肥市长江西路558号，230031;安徽省地震局,合肥市长江西路558号，230031;安徽省地震局,合肥市长江西路558号，230031 |
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| 基金项目： | This project was jointly funded by the Youth Program of Earthquake Scientific Research Fund of Anhui Province ( 20120704 ) and Contract Subject of Earthquake Administration of Anhui Province (201210) ． |
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| 摘 要： | The focal mechanisms of 62 moderate-small earthquakes since 1980 in the ＂ Huoshan seismic window＂ region are calculated with the method developed recently by Snoke, combining the use of the first motion of P, SV and SH waves with their amplitude ratios. Based on these abundant focal mechanisms, the mean tectonic stress field in the ＂Huoshan seismic window＂ region is inverted with the average stress tensor method, and the result shows that the ＂Huoshan seismic window＂ region is horizontally compressed in the near EW direction and horizontally dilated in the near NS direction, which is in accord with statistical results of focal mechanism parameters. We estimate the difference （also referred to as consistency parameter 0） between the force axis direction of the focal mechanism solution and the mean stress tensor, then further analyze the variation characteristics of 0 versus time, and the relationship with moderately strong earthquakes in the east China region. The result indicates that 0 in the ＂ Huoshan seismic window＂ region is in good correspondence with moderately strong earthquakes in the East China region. When 0 is lower than the mean value, corresponding moderately strong earthquakes may occur in the East China region.
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| 关 键 词： | 现代构造应力场 地震窗 霍山 震源机制解 中国东部地区 中强地震 应力张量 平均值 |
| 收稿时间： | 1/5/2012 12:00:00 AM |
Study on the Recent Tectonic Stress Field in the ＂Huoshan Seismic Window＂ Region |
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| Ni Hongyu,Liu Zemin,Hong Dequan,Li Lingli,Zheng Xianjin and Xu Xin.Study on the Recent Tectonic Stress Field in the ＂Huoshan Seismic Window＂ Region[J].Earthquake Research in China,2013,27(4):467-478. |
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| Authors: | Ni Hongyu Liu Zemin Hong Dequan Li Lingli Zheng Xianjin and Xu Xin |
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| Institution: | Ni Hongyu, Liu Zemin, Hong Dequan, Li Lingli, Zheng Xianjin, Xu Xin(Earthquake Administration of Anhui Province, Hefei 230031, China) |
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| Abstract: | Focal mechanism solutions Consistency parameter Tectonic stress field The＂Huoshan seismic window＂ East China region |
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| Keywords: | Focal mechanism solutions Consistency parameter Tectonic stress field The＂Huoshan seismic window＂ East China region |
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