| 宁夏地区中小地震震源参数的研究 |
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| 引用本文： | 许英才,许文俊,李鸿庭.宁夏地区中小地震震源参数的研究[J].地震地磁观测与研究,2011,32(6):35-41. |
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| 作者姓名： | 许英才 许文俊 李鸿庭 |
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| 作者单位： | 中国银川750001 宁夏回族自治区地震局 |
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| 摘 要： | 利用宁夏及邻区的数字测震资料,选取2009年5月至2010年10月间的31个M2.7-ML4.9地震事件的波形记录,以Brune提出的震源谱为平方模型基础,通过消除观测谱中的几何扩散、非弹性衰减、场地响应、仪器响应等影响因素,得到这些地震的震源谱,根据Brune的圆盘震源模型计算并研究地震矩、矩震级、地震应力降、震源尺...
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| 关 键 词： | 观测谱 震源谱 震源参数 矩震级 |
Research of source parameters for medium and small earthquakes in Ningxia area |
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| Xu Yingcai,Xu Wenjun,Li Hongting.Research of source parameters for medium and small earthquakes in Ningxia area[J].Seismological and Geomagnetic Observation and Research,2011,32(6):35-41. |
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| Authors: | Xu Yingcai Xu Wenjun Li Hongting |
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| Institution: | (Earthquake Administration of Ningxia Hui Autonomous Region, Yinchuan 750001, China) |
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| Abstract: | In this paper, 31 seismic events of ML 2.7--Me 4.9 in Ningxia region and borders, which occurred from May, 2009 to Oct, 2010 were studied. Based on the source displacement spectrum of the omega-squared mode, removed the effects of instrument, attenuation and site from the observed spectra, we get the source spectra of these earthquakes. According to Brune＇s model, the source parameters such as the seismic moment M0, Mw, stress drop △δ and source radius are calculated. We also analyzed the relationship between the source parameters. The result shows that there is a good relation among the lg M0 ,Mw and Mc of the 31 events. |
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| Keywords: | observed spectra source spectra source parameters Mw |
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