辽宁抚顺地区非天然地震的特征与识别  

Characteristics and Identification of Non-natural Earthquakes in Fushun,Liaoning

作　　者：李子昊 郭攀 王晓睿[1] 梁一婧[1] LI Zihao;GUO Pan;WANG Xiaorui;LIANG Yijing(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56-61,共6页Journal of Disaster Prevention And Reduction

基　　金：地震科技星火计划项目(XH24008YA)。

摘　　要：选取2013年以来辽宁抚顺地区记录到的非天然地震数据,通过对比分析发震时间、震级、震源深度、震中位置、波形、频谱等特征,对非天然地震事件进行了统计研究。结果表明:抚顺地区非天然地震发震时间比较有规律,震级范围主要集中在M_(L)2.0~3.0,具有周期大、衰减快、持续时间短的特征;其中塌陷优势频率较低,主要集中在0~3Hz,主频为1Hz;爆破优势频率较高,主要集中在0~5Hz,主频为1Hz;天然地震事件的优势频率主要集中在1~22Hz。通过总结抚顺地区非天然地震波形的特征和识别手段,提出了天然地震和非天然地震区分方法,从而大大提高了值班人员的地震识别能力。This article selects non-natural earthquake data recorded in the Fushun area of Liaoning prov-ince since 2013,and conducts statistical research on non-natural earthquake events based on characteris-tics such as time of earthquake occurrence,magnitude,source depth,waveform,and frequency spec-trum.The conclusion shows that the earthquake occurrence time of non-natural earthquakes in the Fushun ar-ea is relatively fixed.And the magnitude range is mainly concentrated between M_(L)2.0 and M,3.0,with char-acteristics of large period,fast attenuation,and short duration.The dominant frequency of collapse is rela-tively low,mainly concentrated between O~3 Hz,with a main frequency of 1Hz;The dominant frequency of blasting is relatively high,mainly concentrated between O~5Hz,with a main frequency of 1Hz;The dominant frequency of natural earthquake events should only be concentrated between 1-22Hz.Obtained the characteristics and identification methods of non-natural earthquake waveforms in the Fushun area,and pro-posed a method for distinguishing between natural and non-natural earthquakes,which can greatly improve the ability of duty personnel to identify earthquakes.

关 键 词：非天然地震 频谱 爆破 塌陷 

分 类 号：P315.63[天文地球—地震学]