摘要
对福建地区 5个台站 5套倾斜仪 1 0年的资料 ,统一用调和分析、差分分析、卡尔曼滤波和最大相关系数方法进行全面系统处理 ,提取异常信息 ,统计分析对该地区有意义Ms5级以上地震的关系 ,并对这几种方法进行评价。结果是 :地倾斜固体潮M2波γ因子异常与地震的对应率为 46% (P =5 4 % ) ,差分分析方法识别的异常与地震对应率为2 3% (P =42 % ) ,卡尔曼滤波方法识别的异常与地震的对应率为 30 % (P =34% ) ,最大相关系数分析方法识别的异常与地震对应率为 1 9% (P =37% )。
The data of 5 sets of tiltmeter in 5 stations about 10 years in Fujian are processed comprehensively and systematically by the methods of harmonic analysis,differ analysis,Kalman filtering and maximum coefficient of correlation.The anomaly information of these data and relation between anomaly and earthquakes(Ms>5) in the region is analyzed statistically. In this way,all methods are evaluated.The results show that 46% anomalies (R=54%) identified fromγfactor of M2 waves of ground tilt solid tides,23% anomalies (R=42%) recognized from differ analysis,30% anomalies (R=30%) picked up from Kalman filtering and 19% anomalies (R=37%) obtained from maximum coefficient of correlation are corresponded to earthquakes.
出处
《福建地震》
2003年第3期22-25,共4页
Fujian Seismology
关键词
地倾斜
地震前兆
地震预报
Crustal Earthquake Precursors Earthquake Prediction
