地震弱短临前兆信息的提取方法研究

地震短临预报是地震预报的重大难题,它有赖于好的前兆手段和数据算是方法,本提出“弱前兆信息”的观点,并研究了提取弱短临前兆信息的方法和定量指标。

A METHOD STUDY TO GET WEAK SHORT-TERM AND IMMINENT PRECURSORY INFORMATION OF EARTHQUAKE

The short-term and imminent earthquake prediction is a major difficult problem for earthquake predictions which depends on good precursory measures and data processing method. In this paper we have raised the viewpoint of "weak precursory information" and studied the method to get weak short-term and imminent precursory information and quantitative indicators.Since 1986 we have processed the data of 6 measures observed in 9 professional and local stations by different methods which include stress, georesistivity, groudwater dynamic and radon content in grounwater. We had screened out nonlinear regression method at last. The earthquakes occurred in the past have been reviewed and checked from which the reasonable anomalous index to distinguish Is decided. Several earthquakes nearing the area were predicted fairly good which make the experience and qualitative prediction turn into probability and quantitative prediction, further, the programization and practicalization are realized.