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.
