| 抚松M_L5.0级地震断层破裂参数的测定 |
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| 引用本文： | 梁国经,郑双凤,刘俊清,李仲巍,刘达峰,綦伟.抚松M_L5.0级地震断层破裂参数的测定[J].东北地震研究,2010,26(3):55-60. |
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| 作者姓名： | 梁国经 郑双凤 刘俊清 李仲巍 刘达峰 綦伟 |
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| 作者单位： | 1. 吉林省龙岗火山监测站,吉林抚松,134528
2. 吉林省地震局,吉林长春,130022 |
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| 摘 要： | 本文根据地震波传播过程中的多谱勒效应,利用拐角频率的方位变化,用最小二乘法反演了抚松ML5.0级地震的破裂参数。结果表明,这次地震的断层破裂方向为226°,与震源机制解WS向节面、余震分布和震中附近的断层走向基本一致。地震马赫数为0.62,破裂长度为2.82km,破裂自北东向西南方向传播。
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| 关 键 词： | 多谱勒效应 拐角频率 破裂参数 抚松地震 |
DETERMINATION OF RUPTURE PARAMETERS FOR FUSONG ML5.0 EARTHQUAKE |
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| LIANG Guo-jing,ZHENG Shuang-feng,LIU Jun-qing,LI Zhong-wei,LIU Da-feng,QI Wei.DETERMINATION OF RUPTURE PARAMETERS FOR FUSONG ML5.0 EARTHQUAKE[J].Seismological Research of Northeast China,2010,26(3):55-60. |
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| Authors: | LIANG Guo-jing ZHENG Shuang-feng LIU Jun-qing LI Zhong-wei LIU Da-feng QI Wei |
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| Institution: | 1.Volcanic Obsvertory of Long-gang,Jilin Fusong 134528;2.Earthquake Administration of Jilin Province,Jilin Changchun 130022) |
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| Abstract: | In this paper,the azimuths of rupture propagation directions and source parameters of the ML5.0 earthquakes in Fusong are obtained utilizing the direction change of corner frequency and the least square method according to the earthquake Doppler effect.The results show that the azimuth angle of rupture propagation directions is about 226°,consistent with the WS nodal plane of focal mechanism and aftershock distribution and the fault directions in the epicenters.The seismic Mach number is about 0.62 and the rupture lengths are about 2.82 kilometers.The rupture propagate along the direction from NE to SW. |
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| Keywords: | doppler effect corner frequency rupture parameters Fusong earthquake |
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