| 2011年1月19日安徽安庆M4.8地震的震源机制 |
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| 引用本文： | 孙业君,周云好. 2011年1月19日安徽安庆M4.8地震的震源机制[J]. 国际地震动态, 2011, 0(3): 27-28. DOI: 10.3969/j.issn.0235-4975.2011.03.010 |
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| 作者姓名： | 孙业君 周云好 |
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| 作者单位： | 江苏省地震局; |
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| 摘 要： | 我们用5个区域数字地震台网84个台站记录到的清楚的149个P波(P<,n>、R<,g>)的初动符号,求得了2011年1月19日安庆M4.8地震的震源机制解.节面Ⅰ:走向223°,倾角90°,滑动角-90°;节面Ⅱ:走向45°,倾角0°,滑动角-90°.根据野外考察得出的这次地震极震区长轴走向结果,可以推断,223°走向...
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| 关 键 词： | 震源机制 数字地震台网 P波初动 |
Focal mechanism of the Anqing M4.8 earthquake on 19 January,2011 |
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| Sun Yejun,Zhou Yunhao. Focal mechanism of the Anqing M4.8 earthquake on 19 January,2011[J]. Recent Developments in World Seismology, 2011, 0(3): 27-28. DOI: 10.3969/j.issn.0235-4975.2011.03.010 |
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| Authors: | Sun Yejun Zhou Yunhao |
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| Affiliation: | Sun Yejun Zhou Yunhao(Earthquake Administration of Jiangsu Province,Nanjing 210014,China) |
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| Abstract: | Focal mechanism of the Anqing M4.8 earthquake in Anhui Province on 19 January,2011,has been obtained by using the first motion polarity data of 149 Pn and Pg wave phases from 84 seismic stations of 5 local digital seismic networks.The strike,dip and rake of nodal plane I are 223°,90° and-90°,and those of nodal plane II are 45°,0° and-90°,respectively.Comparing with the direction of the long-axis of isoseismal from field investigation,it suggests that the seismogenic fault plane is of the strike of 223° with a vertical rupture,the southeast block moving upward relatively to the northwest one. |
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| Keywords: | focal mechanism digital seismic network P-wave first motion |
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