摘要
应用内蒙古、黑龙江、吉林、辽宁地磁台站总场F北京时21点绝对观测值,研究了其空间相关性在前郭5.8级震群前的变化,结果显示,在地震前地磁总场F空间相关性会出现下降异常变化,根据异常变化,提出判定异常区域方法,提出的判定方法与实际发震区域一致。
By applying the 21h （Beijing Time） absolute observed values of the total field （F） in the geomagnetic observatories of Inner Mongolia, Heilongjiang Province, Jilin Province, and Liaoning Province, we studied the changing of their spatial correlations before the Qian＇ guo Ms 5.8 earthquake swarm, and the result showed that, before the earthquake, the spatial correlations of the geomagnetic total field F would descend anomalously. Based on these anomalies, we give the method for judging the anomalous region, and it has a concordance with the actual seismic region.
出处
《防灾减灾学报》
2015年第1期75-80,共6页
Journal of Disaster Prevention And Reduction
关键词
地磁
总场F
空间相关性
发震区域
geomagnetism
total field F
spatial correlation
seismic region
