辽宁普兰店M4.6地震定点形变资料同震、震后变化分析  

Analysis of Co-seismic and Post-seismic Changes in Fixed Point Deformation Data for the M4.6 Earthquake in Pulandian,Liaoning

作　　者：孔祥瑞[1] 王喜龙[1] 张志宏[1] 钱蕊[1] 翟丽娜[1] KONG Xiangrui;WANG Xiong;ZHANG Zhihong;QIAN Rui;ZHAI Lina(Liaoning Earthquake Agency,Liaoning Shenyang 110034,China)

机构地区：[1]辽宁省地震局,辽宁沈阳110034

出　　处：《防灾减灾学报》2023年第4期13-18,共6页Journal of Disaster Prevention And Reduction

基　　金：辽宁省地震局青年科研基金项目(LN2022029)。

摘　　要：2023年8月23日18时19分47秒辽宁省大连市普兰店区发生M4.6地震。针对此次地震,对辽宁地区定点形变观测资料进行了梳理,分析了各观测仪器记录到的同震响应形态、震后曲线变化形态,相对震中的空间分布特征以及记录同震仪器测项的占比情况,对辽宁地区定点形变观测仪器的同震特征进行了综合分析。其中,水平摆倾斜仪和水管倾斜仪记录到的同震变化相对较少,体应变观测记录到的同震变化不明显,钻孔倾斜仪和宽频带倾斜仪记录到的同震变化较为明显。总体来说,不同种类的形变观测仪器在同震特征方面存在差异。A magnitude 4.6 earthquake occurred at 18:19:47 on August 23,2023,in Pulandian District,Dalian City,Liaoning Province.In response to this earthquake,this paper compiles the fixed-point defor-mation observation data in Liaoning area,analyzes the coseismic data pattern recorded by each observation instrument,the shape of the postseismic curve,the spatial distribution relative to the epicenter,and the percentage of the recorded coseismic instrumental measurements,and conducts a comprehensive analysis of the coseismic characteristics of the fixed-point deformation observation instruments in Liaoning area.Among them,the coseismic changes recorded by the horizontal pendulum inclinometer and the water pipe inclinom-eter are relatively small,the coseismic changes recorded by the body strain observation are not obvious,the coseismic changes recorded by the borehole inclinometer are more obvious,and the coseismic changes recorded by the broadband inclinometer are also more obvious.Overall,there are differences in the coseis-mic characteristics of different kinds of deformation observation instruments.

关 键 词：普兰店地震 定点形变观测资料 同震特征 震后曲线形态 

分 类 号：P315.72[天文地球—地震学]