2014年云南鲁甸6.5级强震前危险区预测回顾和中短临异常特征  

The review of tracing forecast with key regions for seismic risk before M6.5 strong earthquake occurred in Ludian,Yunnan 2014 and the characteristics of medium-short term impending anomalies

作　　者：杨芬[1] 

机构地区：[1]中国地震局滇西地震预报实验场办公室,云南大理671000

出　　处：《国际地震动态》2015年第10期23-31,共9页Recent Developments in World Seismology

摘　　要：滇西地震预报实验场2013年底和2014年5月上旬分别在年度和年中地震趋势研究报告中提出，2014年度滇东北存在发生6级强地震危险性。2014年8月3日鲁甸6．5级强震发生在预测区域内。2014年鲁甸6．5级强震前地震活动性震兆和地下流体前兆存在中短临异常现象。地震活动性震兆包括云南2009年7月以来6级以上地震平静异常，滇东北5级地震丛集活动和滇东北中强震活跃期进入“强幕”等中期异常背景，以及大盈江断裂5级震群窗短临异常。地下流体前兆2014年6～7月出现同测点不同测项同步性异常和不同测点同测项同步性异常现象。In the middle and annual earthquake trend study reports of Yunnan Province for 2014, the Western Yunnan Earthquake Prediction Study Area proposed the risk of strong earthquakes M≥6.0 in northeast Yunnan 2014. The M6.5 strong earthquake occurred in Ludian, the prediction area on August 3, 2014. We found some medium-short term impending anomalies about seismicity and underground fluid precursors before M6.5 strong earthquake occurred in Ludian. The medium-short term impending anomalies include the middleterm anomalies, such as the seismicity with quiescence of earthquakes with M≥6.0 in Yunnan from July 2009, earthquakes with M≥5.0 cluster activity and the arrival of active episode of strong earthquake in northeast Yunnan, and the short-term impending anomaly with the window of earthquake swarm withM≥5.0 in Dayingjiang earthquake fault. The underground fluid precursors indicate the synchronism anomalies of underground fluid precursors with different observation item at one measuring point and different measuring point in one observation item.

关 键 词：鲁甸6.5级强震 危险区预测回顾 中短临异常特征 

分 类 号：P315.72[天文地球—地震学]