sPL震相在地震定位中的应用  

APPLICATION OF sPL SEISMIC PHASE IN EARTHQUAKE LOCATION

作　　者：彭利媚 陈小敏[1] 王茺[1] 陈祥开 周雯[1] 孙佩雯[1] PENG Limei CHEN Xiaomin WANG Chong CHEN Xiangkai ZHOU Wen SUN Peiwen(Earthquake Administration of Hainan Province,Hail~ou 570203, Chin)

机构地区：[1]海南省地震局,海南海口570203

出　　处：《高原地震》2017年第2期7-11,共5页Plateau Earthquake Research

摘　　要：收集海南数字台网2016年1月至11月M_L≥2.0级地震事件,分别用单纯型、LocSAT、Hyposat 3种方法重新定位,结果表明:3种定位方法定出的结果相差不大,残差小,认为海南台网对台站分布较合理的地震定位结果可靠。通过实例:2016年7月31日的海南乐东M_L3.2地震记录到的sPL震相,用sPL震相测定震源深度法定出的结果与以上3种定位法、PTD法结果一致,因此认为用sPL震相定震源深度比较精确。Collected Hainan network record 15 earthquakes with ML ≥2.0 from January to November in 2016, and the epicenters of these earthquakes are relocated by methods of simple type, LocSAT and Hyposat, the differences of the results are not large, the residual is small, the relocation results are reliable because of seis- mic station distribution reasonable. For example, the sPL seismic phase is recorded by Hainan Ledong ML3.2 earthquake on July 31,2016, focal depth is determined by sPL phase is consistent with the results of the three kinds of localization methods and PTD method. Therefore, it is considered that the depth determined by sPL phase is more accurate.

关 键 词：sPL震相 地震定位 海南地震台网 

分 类 号：P315.73[天文地球—地震学]