论文部分内容阅读
地磁幅相法的瞬时差幅度与地磁Z分量日变幅差值一样具有年变规律,应在分析震前异常时消除,并视被处理资料长度及在年变周期中所处的位置,采取不同方法消除年变。应用线性去倾技术处理了1990年2月10日江苏常熟Ms5.1级地震前连云港与常熟及连云港与溧阳的地磁幅相法瞬时差幅度,成功地提取了震前异常。
The instantaneous amplitude of geomagnetic amplitude and phase method has the same annual variation law as the diurnal amplitude difference of geomagnetic Z component. It should be eliminated when analyzing pre-earthquake anomalies, and depending on the length of the data to be processed and the location in the annual variation period, Different ways to eliminate the change. Linear depolarization technique was applied to deal with the instantaneous amplitude difference of Lianyungang, Changshu, Lianyungang and Liyang before the Ms5.1 earthquake in Changshu, Jiangsu Province on February 10, 1990, and successfully extracted the anomalies before the earthquake.