A NEW METHOD FOR PRECURSORY INFORMATION EXTRACTION SLOPE-DIFFERENCE INFORMATION METHOD
Bo Wanju
Xie Juemin
Luo Sanming
Abstract：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.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 159-166 )