江西瑞昌1995年M_L4.9级地震前后九江地震台倾斜固体潮汐变化分析

Analysis of the variation of the tilt solid earth tide at Jiujiang Station before and after the Ruichang earthquake M_L4.9 in 1995

通过月整点值数据文件和滑动值数据文件这两种数据处理形式,对九江台地倾斜资料进行调和分析计算,分析了M2潮汐因子与瑞昌ML4 9级地震的关系,认为存在震前短临异常或震后异常,并与趋势异常得到相互印证。

In this paper, by processing the data recorded at every hour and its moving data month by month, the ground tilt data is made a harmonic analysis. After discussing the relationship between M2 tide factor and the Ruichang earthquake, it is found that there are short-impending anomalies before the earthquake or anomalies after the earthquake and these are proved by the macroscopic tendency anomaly.