2014年云南盈江6.1级地震宏观异常及其与构造关联性讨论  

Discuss on Macro-anomalies of the Yunnan Yingjiang M6.1 Earthquake and its Relation of Tectonics

作　　者：张艳凤[1] 常祖峰[1] 彭永中 张亚宏 ZHANG Yanfeng;CHANG Zufeng;PENG Yongzhong;ZHANG Yahong(Yunnan Earthquake Agency, Kunming 650224, Yunnan, China;Earthquake Prevention and Disaster Reduction Bureau of Dehong State, Mangshi 678400,Yunnan,china)

机构地区：[1]云南省地震局,云南昆明650224 [2]德宏州防震减灾局,云南芒市678400

出　　处：《地震研究》2018年第1期148-156,共9页Journal of Seismological Research

基　　金：国家自然科学基金(41472204)资助

摘　　要：2014年云南盈江6.1级地震发生前,在震中及其附近地区约208 km范围内出现高温泉水井喷(高压喷射泥砂),地下水翻花冒泡、发浑、变色、水量增大,动物习性异常等宏观异常现象,宏观异常最早出现时间为震前150 d,最晚为震前2 d。这些宏观异常表现出较明显的阶段性,同时呈现出逐渐向震中迁移、靠拢的趋势。几乎所有宏观异常均发生在活动断裂的端部、几组断裂汇而不交的构造部位或是构造盆地内,与构造有着高度的一致性和密切关联性。Before the Yingjiang M6. 1 earthquake,more than 10 macro-anomalies such as blowouts of high-temperature spring water（ high pressure injection of mud and sand）,bloom-spraying and bubbling,water-clouding,water-discoloring,amount-enlarging of underground waters,and habit-changing of animals have happened within around 200 km extent in the epicentral region of the earthquake. Of them,the earliest thing emerged about 150 days,the latest one occurred about 2 days before the earthquake occurrence. All of which show evident episodes in time and the migration tendency to the epicentral region from outside area gradually in space. Almost all the macro-anomalies emerged in the ends of active faults,in the intersecting-but-no-truncating region of several groups faults,or within the tectonic basins,which suggests that the macro-anomalies have highly consistency and close relevance with the active faults.

关 键 词：盈江6.1级地震 宏观异常 地下水 活动断裂 

分 类 号：P315.75[天文地球—地震学]