滇西地区强震与地形变异常的前兆特征  

Strong Earthquakes and Precursory Characteristics of Ground Deformation Anomaly in West Yunnan Province

作　　者：张雁滨[1] 蒋骏[1] 李胜乐[2] 陈京[3] 和升琪[3] 张雁滨 蒋骏[1] 李胜乐[2] 陈京[3] 和升琪[3] 

机构地区：[1]华中科技大学物理系，武汉430074 [2]中国地震局地震研究所，武汉430071 [3]云南省地震局，昆明650041

出　　处：《地震研究》2004年第2期119-125,共7页Journal of Seismological Research

基　　金：国家科委科技攻关"重中之重项目" ( 96-913 -0 9-0 2 -0 1-0 6)课题资助

摘　　要：以形变 (倾斜、应变 )观测资料 ,采用经过实效检验分析后有效率较高的形变前兆参量及异常判别方法 ,以近年来发生在滇西地区的 6级以上地震 :武定地震、丽江地震、宁蒗地震以及姚安地震的震例 ,用滇西及川滇交界地区形变观测网的资料进行综合分析 ,重点对该地区强震前兆异常的时空演化及特征进行分析研究 。In recent years, several strong earthquakes such as Wuding earthquake, Lijiang Earthquake, Ninglang Earthquake and Yao'an Earthquake occurred successively in west Yunnan Province.Taking these earthquakes as the samples, a synthetic analysis of the data got through deformation-observation network in west Yunnan and in the Sichuan-Yunnan boundary region is made.The analysis is based on the precursory parameters of deformation and the anomaly-discriminating method and they have been proved to be very effective in the earthquake prediction.Further, the analysis focuses on the evolvement of precursory anomalies in time and space and the related basic characteristics in the mid-short term stage before strong earthquake occurs.

关 键 词：强震 形变观测 地震前兆 地震预测 

分 类 号：P315.7[天文地球—地震学]