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| 四川地区震源参数和台站场地响应初步研究 | |
| 引用本文： | 范军,汪智,陈银,刘杰,郑斯华,吴朋.四川地区震源参数和台站场地响应初步研究[J].四川地震,2012(3):1-8. |
| 作者姓名： | 范军 汪智 陈银 刘杰 郑斯华 吴朋 |
| 作者单位： | 1. 成都理工大学,四川成都610059／四川省地震局,四川成都610041 2. 四川省地震局,四川成都,610041 3. 中国地震台网中心,北京,100045 4. 中国地震局地震预测研究所,北京,100036 |
| 基金项目： | 中国地震局分析预报中心地震图像与数字化地震观测资料应用实验室提供资助 |
| 摘 要： | 利用成都遥测数字地震台网数字地震波形数据资料，采用Atkinson方法得到四川地区的品质因子Q值与频率，的关系为：Q（f）=203．1f0.834。采用Moya方法反演得到了地震的场地响应，采用Moya方法与Atldnson方法分别得到了相应地震的震源谱参数，两种方法的结果保持了很好的一致性。得到的震源参数结果表明：地震矩与震级的关系为：logM0=17．27＋1．18Mt，地震矩与拐角频率关系，即随着地震矩的增大，拐角频率减小，这些地震的应力降在10-400巴之间，应力降与地震矩之间没有明显的依赖关系。 |
| 关 键 词： | 震源谱参数 震源参数 场地响应 品质因子 遗传算法 |
Preliminary study on both earthquake source parameters and site responses of seismic stations in Sichuan Province |
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| FAN Jun,WANG Zhi,CHEN Yin,LIU Jie,ZHENG Si-hua,WU Peng.Preliminary study on both earthquake source parameters and site responses of seismic stations in Sichuan Province[J].Earthquake Research in Sichuan,2012(3):1-8. | |
| Authors: | FAN Jun WANG Zhi CHEN Yin LIU Jie ZHENG Si-hua WU Peng |
| Institution: | ,(Earthquake Administration of Sichuan Province,Sichuan Chengdu 610041,China) |
| Abstract: | By using the seismic wave data from the Digitalized Remote Seismic Station Network of Chengdu,the relationship between the quality factor Q value and frequency for Sichuan province with the method of Atkinson,Q(f)=203.1f 0.834,is got.Then we use the Moya inversion method to calculate the site responses of a seismic station.The comparison of the earthquake source spectral parameters respectively from both method of Moya and Atkinson are made.The earthquake sources parameters from both methods of Moya and Atkinson are consistent with each other.Our calculated parameters show that the relationship between seismic moment and seismic magnitude is logM0=17.27+1.18 ML.The corner frequency decreases with the increasing of seismic moments and the stress drop is from 10 to 400 Pa.The stress drop do not show clearly connected with the seismic moment. |
| Keywords: | earthquakenetic algorithmsource spectral parameter earthquake source parameter site response quality factor genetic algorithm |
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