分区量规函数在河北地震台网近震震级测定的适用性  

Analysis of partition gauge function for local magnitude in Hebei Seismic Network

作　　者：贾炯[1] 赵英萍[1] 王宁[1] 常亮[1] 李冬圣[1] 蔡玲玲[1] Jia Jiong;Zhao Yingping;Wang Ning;Chang Liang;Li Dongsheng;Cai Lingling(Hebei Earthquake Agency,Shijiazhuang 050021,China)

机构地区：[1]河北省地震局,中国石家庄050021

出　　处：《地震地磁观测与研究》2018年第3期10-15,共6页Seismological and Geomagnetic Observation and Research

基　　金：测震台网青年骨干培养专项(项目编号:20160503)

摘　　要：选取河北地震台网2008—2016年记录的1 714个M_L≥0.1地震,采用分区量规函数(新量规函数)重新计算并对比分析M_L震级。实际结果表明,采用新旧量规函数计算得到的近震震级一致性较好,M_L震级偏差在±0.1的地震共1 556个,约91.8%,且抽样地震近震震级均值和标准方差更小。因此,使用分区量规函数,河北地震台网近震震级测定精度和适用性更好。The 1 714 ML≥ 0.1 earthquakes recorded by Hebei Seismic Network for 9 years were selected and the near-shock magnitudes were recalculated and compared using the old and new gauge functions, respectively. The actual measurement results show that the near-earthquake magnitudes obtained by the old and new gauge functions are in good agreement, and the number of earthquakes with ML magnitude deviation of ±0.1 are 1 556, which is approximately 91.8% of all earthquakes. The mean value and stander deviation of magnitudes of sampled earthquakes are smaller, so the usage of a zoning gauge function in Hebei District Network can improve the accuracy and availability of the near-magnitude magnitude.

关 键 词：量规函数 震中距 震级偏差 

分 类 号：P315.32[天文地球—地震学] P315.73[天文地球—固体地球物理学]