前兆信息提取的一种新方法斜率差信息法

摘要

针对日均值前兆数据序列，提出一种新的前兆信息提取方法，即斜率差信息法．以唐山台水准为例，进行了全时域扫描的实例计算，并与已有的几种方法进行了比较和检验．结果表明，该方法经优化后对提取日均值中的短期前兆信息十分有效，具有推广应用价值．%A new method for precursory information extraction, i.e. slope-difference information method is proposed in the paper for the daily-mean-value precursory data sequence. Taking Tangshan station as an example, the calculation of full-time-domain leveling data is made, which is tested and compared with several other methods. The results indicate that the method is very effective for extracting short-term precursory information from the daily mean values after the optimization is made. Therefore, it is valuable for popularization and application.