海南测震台网子台震级偏差分析  

Analysis of Magnitude Deviation of Stations in Hainan Seismic Network

作　　者：彭利媚 陈小敏[1] 丁有兴 陈祥开 李冬雅 曾维顺[1] PENG Li-mei CHEN Xiao-min DING You- xing CHEN Xiang-kai LI Dong-ya ZENG Wei-shun(Earthquake Administration of Hainan Province,Haikou,Hainan 570203,Chin)

机构地区：[1]海南省地震局,海南海口570203

出　　处：《山西地震》2017年第2期22-25,32,共5页Earthquake Research in Shanxi

基　　金：中国地震局"三结合"课题(152101);海南省地震局科研项目(HDKJ201501)

摘　　要：选取海南数字测震台网2008年1月至2015年12月的地震观测报告数据,计算各个子台震级与台网平均震级的偏差、平均偏差。分析地震震中距、场地响应、仪器类型、仪器标定参数对各子台震级偏差的影响程度。结果表明,各子台震级偏差与台站仪器类型关系不大;仪器标定参数在允许的范围内变化时,对各子台震级影响不大;震级偏差主要与台站震中距有关,子台震中距小于60km时,其震级通常会偏小;子台平均震级的偏大、偏小与区域台站场地响应的放大、衰减作用存在一定的相关性。the observation report data of Hainan digital seismic network from January 2008 to December 2015 are chosen to calculate the deviation and average deviation of the magnitude of each station and the average magnitude of the network. The influence degrees of epicentral distance,site response,instrument type and instrument calibration parameters on the magnitude deviation of each sta-tion are analyzed. The results show that the magnitude deviation of each station s not related to the mstrument type, and the calibra-tion parameters of the instrument have Httle influence on the magnitude of each station in the range of allowable variation. The mag-nitude deviation s mainly related to epicentral distance; When the epicentral distance of the station s less than 60km,the magnitude s usually small; There s a certain correlation between the larger and smaller average magnitude of the station and the amplification and attenuation of the site response of the regional station.

关 键 词：震中距 场地响应 震级偏差 

分 类 号：P315.32[天文地球—地震学]