中国台湾地震对福建平潭站的影响

The impact of the Taiwan China earthhquake on FJPT station

为了分析福建平潭(FJPT)站监测到的坐标时间序列数据是否受到中国台湾地震的影响.通过对TNML(中国台湾新竹)站和FJPT站的相关性进行分析发现,TNML站和FJPT站之间有着较强的正相关,其中E方向上最为显著.通过对FJPT站坐标时间序列进行汉明窗功率谱分析及拟合,得出其噪声主要为随机游走噪声+白噪声.通过进一步对FJPT站坐标时间序列进行小波系数多时间尺度分析,得出震前、震后对FJPT站存在运动特征存在短期的影响,影响时间约为地震前后3d左右,但对FJPT站的周期性和趋势性并未造成实质性的影响.震前、后对FJPT站在高程方向的沉降较明显,因此在FJPT站坐标时间序列数据的实际应用,需要考虑台湾地区地震对其短期的影响.

This paper analyzes whether the coordinate time series data monitored by the FJPT(Pingtan Fujian)station is affected by the Taiwan China earthquake.An analyse of the correlation between the TNML(Hsinchu Taiwan)station and the FJPT station indicates that there is a strong positive correlation between the TNML and the FJPT,among which the E direction is the most significant.Through the Hamming window power spectrum analysis and fitting of the coordinate time series of the FJPT station,it is concluded that the noise is mainly ran⁃dom walk noise+white noise.Through further multi-time-scale analysis of wavelet coefficients on the coordi⁃nate time series of the FJPT station,it is concluded that there is a short-term impact on the movement charac⁃teristics of the FJPT station before and after the earthquake,and the impact time is about 3 days.The periodicity and trend of the FJPT station have no substantial impact.The settlement of the FJPT station in the elevation direction is obvious before and after the earthquake.Therefore,in the practical application of the coordinate time series data of the FJPT station,it is necessary to consider the earthquake in Taiwan China.short-term impact.