APPLICATION OF GEOMAGNETIC LOADING-UNLOADING RESPONSERATIO METHOD TO EARTHQUAKE PREDICTION
Zhang Jianguo 1,2) ; Yan Jungang 1) ;Wang Jing 1) ; and Qiao Ziyun 3)
1)Central Seismostation of Handan of Earthquake Administration of Hebei Province,Handan 0560012)College of Geoexploration Science and Technology Jilin University,Changchun 1300263)Earthquake Administration of Hebei Province,Shijiazhuang 050021
Abstract:The relation between high anomalies of Z component of geomagnetism at seimological stations in Hebei province and its neighbouring area for earthquake of Ms≥5.0 from 1982 to 2006 is analyzed with the method of loadingunloading response ratio. The result shows: 1) during the twentyfive years, ninteen anomalies coincided with the standard at Hebei geomagnetic stations had been obtained, thirteen of which respond to the Ms≥5.0 earthquakes in eleven months after the earthquakes,fifteen earthquakes should be predicted,three predictions were false and two predictions were missed;2) before most of the earthquakes the spatial distribution of maximal value of the anormalies was relatively concentrated in the vicinity of epicentral area; 3) the innercheck prediction efficiency indicator R= 0.44, passed the examination.