2023年2月5日、11日三水3.2和河源4.3级地震广东地区同震效应对比分析  

Comparative Analysis of Coseismic Effects of the Sanshui M3.2 and Heyuan M4.3 Earthquakes on February 5^(th) and 11^(th),2023 in Guangdong Region

作　　者：陈贵美[1] 谭争光[1] 刘锦[1] 王小娜[1] CHEN Guimei;TAN Zhengguang;LIU Jin;WANG Xiaona(Guangdong Earthquake Agency,Guangzhou 510070,China)

机构地区：[1]广东省地震局,广州510070

出　　处：《华南地震》2023年第4期150-155,共6页South China Journal of Seismology

基　　金：2022年度甘肃省科技重点研发计划项目:河西走廊地震危险等级综合判定分析与应用(22YF7FA079)。

摘　　要：2023年2月5日和11日广东三水、河源相继发生了3.2和4.3级地震,震后整理发现广东地区的重力、部分地倾斜、水位等记录到了同震响应波或水震波。分析了地形变、地下流体学科观测资料同震波形的表现形态及特征。从各仪器记录曲线来看,在同震响应后基本能快速恢复到震前正常观测形态,证明了广东省内地球物理观测设备运行的稳定性和可靠性。通过对各观测仪器地震同震响应和记录能力分析,以期对进一步深入研究以上2次地震对广东省未来地震趋势的影响有所帮助。The M3.2 and M4.3 earthquakes occurred successively in Sanshui and Heyuan of Guangdong Province on February 5th and 11th,2023.After the earthquakes,it was found that the gravity,partial ground tilt and water level in Guangdong region recorded the coseismic response wave or water shock wave.This paper analyzes the manifestation and characteristics of the coseismic wave of the observation data of ground deformation and underground fluid.From the record curves of each instrument,it can be seen that the normal observation form before the earthquake can be quickly restored after the co-seismic response,which proves the stability and reliability of the operation of geophysical observation equipment in the province.Through the analysis of the seismic response and recording ability of each observation instrument,it is expected to be helpful to further study the influence of these two earthquakes on the future seismic trend in Guangdong Province.

关 键 词：三水3.2级地震 河源4.3级地震 地球物理观测 同震效应 

分 类 号：P315.7[天文地球—地震学]