| 用S波研究雅江地震序列震源波谱 |
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| 引用本文： | 张永久,程万正.用S波研究雅江地震序列震源波谱[J].中国地震,2003,19(4):340-350. |
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| 作者姓名： | 张永久 程万正 |
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| 作者单位： | 四川省地震局,成都,610041 |
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| 基金项目： | 中国地震局“十五”科研 (0 1 0 2 0 1)和 (10 0 5 0 1 0 5 0 7)项目 |
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| 摘 要： | 利用成都区域数字化地震台网记录的雅江地震序列的S波段资料，使用波谱分析方法计算雅江地震序列的震源参数。在对不同时段的震源参数进行初步分析后，得到如下结果：①给出了适合于雅江地震序列的地震矩M0和矩震级Mw与里氏震级ML的关系；②拐角频率从5．0级地震前的1．4左右下降到5．0级地震后的1．3左右，6．0级地震之后又下降到1．2左右；③前震和余震的一些震源参数存在明显差异，可作为预测未来强震的重要指标之一。
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| 关 键 词： | 雅江地震 数字地震 波谱分析 |
| 文章编号： | 1001-4683(2003)04-0340-11 |
Study on Source Parameters for the Yajiang Earthquake Sequence Using S Wave |
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| Zhang Yongjiu Cheng Wanzheng.Study on Source Parameters for the Yajiang Earthquake Sequence Using S Wave[J].Earthquake Research in China,2003,19(4):340-350. |
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| Authors: | Zhang Yongjiu Cheng Wanzheng |
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| Abstract: | Using the Yajiang earthquake sequence data of S wave recorded by the Chengdu Regional Digital Seismic Network,the source parameters for the Yajiang earthquake sequence are determined by using spectral analysis. Analysis of the source parameters at different times are made:The relationship of log M _0, M _w and M _L is given; The corner frequency decrease from about 1.4Hz before M 5.0 earthquake to about 1.3Hz after M 5.0 earthquake,then decrease to about 1.2Hz after M 6.0 earthquake;Some source parameters'difference is found between pre-earthquake and aftershock,it might be important for earthquake prediction. |
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| Keywords: | The Yajiang earthquake Digital earthquake Spectral analysis |
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