云南腾冲地区地震的潮汐应力触发作用  

Tidal Stress Triggering Effect of Earthquake in Tengchong Area,Yunnan Province

作　　者：杨春艳[1] 解朝娣[1] 王先星 朱叶 钟琪 徐彦[1] 刘本玉[1] 相传芳 YANG Chunyan;XIE Chaodi;WANG Xianxing;ZHU Ye;ZHONG Qi;XU Yan;LIU Benyu;XIANG Chuanfang(School of Earth Sciences,Yunnan University,South-Dongwaihuan Road,Kunming 650500,China;Yudong Earthquake Monitoring Station,Zhaotong Earthquake Prevention and Mitigation Bureau,19 Fengyuan Road,Zhaotong 657000,China)

机构地区：[1]云南大学地球科学学院,昆明市650500 [2]昭通市防震减灾局渔洞地震监测站,云南省昭通市657000

出　　处：《大地测量与地球动力学》2023年第4期420-424,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41964001);国家级大学生创新创业训练计划(202110673001)。

摘　　要：选用云南腾冲地区2009~2019年地震目录,采用Schuster检验方法分析地震活动的潮汐相位角分布特征,并结合2019年地震活动与月相的对应关系,探索腾冲地区的地震活动与天文潮汐应力可能存在的关系。Schuster检验结果显示,腾冲地区的地震发生时刻存在优势潮汐相位角,Schuster检验P值远小于5%;2019年地震的发生时间与朔望呈现一定的对应关系,尤其是中强地震发生时其月相效应更明显。2种统计检验均表明,腾冲地区的地震活动与天文潮汐有一定的相关性,且主要是较浅的地震活动受到天文潮汐的调制作用。We select the seismic catalog of Tengchong area in Yunnan province from 2009 to 2019,and use the Schuster test method to analyze the distribution characteristics of tidal phase angle of seismic activity.Combined with the corresponding relationship between seismic activity and lunar phase in 2019,we explore the possible relationship between seismic activity and astronomical tidal stress in Tengchong area.The results show a dominant tidal phase angle at the time when the earthquake occurred,with the P value far less than 5%.The occurrence time of seismic activity in 2019 also shows a certain correspondence with lunar phase;the lunar phase effect is more obvious when moderate and strong earthquakes occur.Both statistical tests reveal that there is a certain correlation between seismic activity and astronomical tide in Tengchong area;mainly shallower seismic activity is modulated by astronomical tides.

关 键 词：腾冲地区 潮汐触发 Schuster检验 月相 

分 类 号：P315[天文地球—地震学]