Inversion of source parameters for moderate and small earthquakes in Beijing region

作     者：兰从欣 刘杰 郑斯华 马士振 李菊珍 

作者机构：Earthquake Administration of Beijing Municipality Beijing 100080 China Institute of Earthquake Science China Earthquake Administration Beijing 100036 China 

出 版 物：《Acta Seismologica Sinica(English Edition)》 (ACTA SEISMOLOGICA SINICA(ENGLISH EDITION))

年 卷 期：2005年第18卷第5期

页      面：38-49,132页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0813[工学-建筑学] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 0814[工学-土木工程] 

基　　金：Project of Center for Analysis and Prediction of CEA  Key Project of State Science and Technology in the Tenth Five-year Plan (02-03-04)  Joint Seismological Science Foundation of China (604022)  and Natural Science Founda-tion of Beijing Municipality (8022009) 

主　　题：source parameters site response quality factor Q value seismic station network 

摘      要：According to the geological structural features, Beijing and the adjacent areas can be divided into two regions of plain in the east and mountain in the west. Among the stations covered by the telemetered digital seismic station network of Earthquake Administration of Beijing Municipality, the stations in the plain area are all borehole ones and the stations in the western mountainous region are all located on the surface bedrock. In the paper, 511 wave- form data recorded by the network from Oct. 2001 to Oct. 2004 are used in the researches for the entire Beijing region, the western mountainous region and the eastern plain area, respectively. The Q values are calculated for each area by Atkinson′s method and compared with the existed data. The reliability of the Q values and the reasons for the difference in the Q values are also discussed. Then, the source parameters and site response are inverted by the Moya′s method, in which two models are used. The first model uses the Q values, earthquakes and stations in the sub-areas and the second model uses the Q values, earthquakes and stations in the entire Beijing region. The results indicate that the source parameters and site responses obtained by two models are basically consistent with each other. It also indicates that the source parameters obtained by these methods are not affected by the size of station network.