2011年缅甸7.2级地震前云南地下流体异常特征分析

摘要

Systematic research of ground fluid precursory anomalies in Yunnan before Burma MS7. 2 earthquake on March 2011 was done. The study results show that 17 items of anomalies in 14 observation stations appeared before the earthquake within 540 km from the epicenter. Temporal and spatial characteristics of anomalies show that the anomaly evolution displays obvious stage. Anomalies gradually increase five months before the earthquake and seem to concentrate to the epicenter.%对2011年3月24日缅甸MS7.2地震前云南地区地下流体前兆异常进行了系统研究.结果表明,云南距震中540 km范围内共有14测点17个测项异常；异常时空特征表现出异常演化具有明显的阶段性,地震前5个月开始异常逐月增多,并似有向震中收缩发展的迹象.