| Study on Source Spectrum for the Yajiang Earthquake Sequence Using S Wave |
| |
| 作者姓名： | Zhang Yongjiu |
| |
| 作者单位： | EarthquakeAdministrationofSichuanProvince,Chengdu610041,China |
| |
| 基金项目： | ThisprojectwassponsoredbytheScientificandTechnologicalProgramoftheTenth“FiveYearPlan”(010201)and(1005010507),ChinaEarthquakeAdministration. |
| |
| 摘 要： | The source parameters of the Yajiang earthquake sequence are calculated based on spectral analysis of S wave data recorded by the Chengdu Digital Seismic Network. Analysis of the source parameters in different periods are made, The obtained results are : ( 1 ) the relationship between Ms (seismic moment), Mw ( moment magnitude) and ML (local magnitude), which fits the data of Yajiang earthquake sequence; (2) the decreasing corner frequency from 1.4 before the M5.0 earthquake to 1.3 afterwards, and then to 1.2 after the M6.O event; (3) the obvious difference in the source parameters between foreshocks and aftershocks, which may be indicators for earthquake prediction.
|
| 关 键 词： | 地震波 地震仿真学 光谱分析 数字观测 |
Study on Source Spectrum for the Yajiang Earthquake Sequence Using S Wave |
| |
| Zhang Yongjiu.Study on Source Spectrum for the Yajiang Earthquake Sequence Using S Wave[J].Earthquake Research in China,2004,18(2):131-141. |
| |
| Authors: | Zhang Yongjiu |
| |
| Institution: | Zhang Yongjiu and Cheng WanzhengEarthquake Administration of Sichuan Province,Chengdu 610041,China |
| |
| Abstract: | The source parameters of the Yajiang earthquake sequence are calculated based on spectral analysis of S wave data recorded by the Chengdu Digital Seismic Network. Analysis of the source parameters in different periods are made,The obtained results are:(1)the relationship between M S(seismic moment), M W(moment magnitude)and M L(local magnitude),which fits the data of Yajiang earthquake sequence; (2) the decreasing corner frequency from 1.4 before the M5.0 earthquake to 1.3 afterwards, and then to 1.2 after the M6.0 event; (3) the obvious difference in the source parameters between foreshocks and aftershocks,which may be indicators for earthquake prediction. |
| |
| Keywords: | The Yajiang earthquake Digital seismology Spectral analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《中国地震研究》浏览原始摘要信息 |
| 点击此处可从《中国地震研究》下载免费的PDF全文 |
