昌宁5.1级地震前潮汐形变短临异常识别

摘要

2015年10月30日19时26分39秒昌宁发生ML 5.1地震,收集地震前90天云县地震台潮汐形变观测资料,利用倾斜固体潮Nakai拟合检验方法行处理与分析.结果发现,在该地震发生前2—3个月,云县地震台出现趋势异常和非潮汐形变地震短临异常.%Using the"Nakai"fitting test of tilt tide analysis method,the deformation observation data of Yunxian Seismic Station which is 90 days before the ML 5.1 earthquake in Changning on October 30th, 2015 are processed and analyzed. The result shows that in about 2 to 3 months before the earthquake, some short-impending anomalies and trend anomalies are recorded at Yunxian Seismic Station.