【摘要】 利用转换函数的方法对乾陵、泾阳、周至台1991~2002年地磁资料进行了计算处理,对关中各台地磁转换函数的变化特征进行了初步分析探讨。结果表明:不同周期的转换函数A、B以及总方差σz和Δαρ在震前有明显变化;转换函数异常幅度不仅与周期有关,也和地震的震中距和震级有关。更多还原

【Abstract】 Based on the geomagnetic data of Guanzhong,Jingyang and Zhouzhi areas from Jan.1991 to Jun.2002,the monthly variation of the modules |A| and | B| of transfer characteristic A and B and total variance σ z were analyzed by the transfer characteristic method.The results show that different periods transfer characteristic A and B,total variance σ z and αρ changed greatly before earthquakes,and anomalous amplitude of transfer characteristic not only related with the earthquakes periods but also with the epicentral distances and their magnitudes.更多还原