| 内蒙古西部地区震源参数反演 |
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| 引用本文： | 苏亚梅,胡炜,曹孟娜.内蒙古西部地区震源参数反演[J].地震地磁观测与研究,2018,39(5):15-22. |
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| 作者姓名： | 苏亚梅 胡炜 曹孟娜 |
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| 作者单位： | 1.中国内蒙古 010051 呼和浩特基准地震台;2.中国内蒙古 014040 包头地震台 |
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| 基金项目： | 2017年内蒙古自治区地震局局长基金（项目编号：2017JC06） |
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| 摘 要： | 基于遗传算法，采用Atkinson方法，选取2009-2017年内蒙古数字地震台网记录的内蒙古西部地区ML ≥ 2.7地震事件波形资料，反演得到83个地震的震源参数。分析结果表明：该地区的拐角频率、地震矩、零频振幅与震级之间的相关性较好，而地震矩与应力降以及应力降与震级之间呈弱相关性，地震矩与拐角频率呈良好负相关性。其中，应力降集中分布在0.7-20 MPa，当ML > 3.6时，随着震级增大，应力降呈现较为离散的特征。
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| 关 键 词： | 中小地震 场地响应 震源参数 线性关系 |
Inversion of source parameters in the western region of Inner Mongolia Autonomous Region |
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| Su Yamei,Hu Wei,Cao Mengna.Inversion of source parameters in the western region of Inner Mongolia Autonomous Region[J].Seismological and Geomagnetic Observation and Research,2018,39(5):15-22. |
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| Authors: | Su Yamei Hu Wei Cao Mengna |
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| Institution: | 1.Hohhot Seismic Station, Inner Mongolia Autonomous Region 010051, China;2.Baotou Seismic Station, Inner Mongolia Autonomous Region 014040, China |
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| Abstract: | Method based on genetic algorithm, using the Atkinson, selecting the waveform data of the ML ≥ 2.7 earthquake in the western Inner Mongolia recorded by the Inner Mongolia Digital Seismic Network from 2009 to 2017. The source parameters of 83 earthquakes were calculated. The analysis results show that there is a good linear relationship between the corner frequency, seismic moment, zero-frequency amplitude and the magnitude of the region. The seismic moment and stress drop and the stress drop and the magnitude show a weak correlation. The seismic moment and the corner frequency are good negative correlation. Among them, the stress drop is concentrated in 0.7-20 MPa. When ML > 3.6, the stress drop exhibits a discrete feature as the magnitude increases. |
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| Keywords: | medium and small earthquake site response the source parameter linear relation |
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