干旱区生态环境知识资源中心(Arid): 地磁"低点位移"现象与强震预测研究

Arid

	地磁"低点位移"现象与强震预测研究
其他题名	Geomagnetic low-point displacement phenomena arid strong earthquake prediction research
	丁鉴海 1; 余素荣 2; 王亚丽 2
ISSN	1005-0388
出版年	2008
卷号	23 期号:6 页码:1011-1017
中文摘要	利用中国地磁台网40年观测资料,研究了2008年3月21日新疆于田7.3级地震,2001年11月14日昆仑山口西8.1级地震等108次强震前,地磁垂直分量日变极小值出现的时间在空间分布上的异常特征即"低点位移"现象.这种少见的异常现象与强震发生有较好的相关性,发震日期为异常日后的第27天或41天前后4天,强震发生地区在低点位移突变分界线附近.此外,还研究了于田7.3级、昆仑山口西8.1级临震前震中周围出现的地磁日变幅异常现象.地磁低点位移是复杂的地球物理现象,受多种因素影响,其"探测-感应-触发"机理仍处在探索之中.
英文摘要	Abstract On the basis of data_ recorded for 40 years by the network of geomagnetic observatories in China,the anomalous features of appearance time of the minima of diurnal variations of the geomagnetic vertical component and the variation of their spatial distribution (i.e,phenomena of low-point displacement)have been studied,before XinjiangYutian Ms7.3 on March.21,2008,Kunlunshan Ms8.1 on Nov.14,2001 and more than 108 strong Earthquakes.Such rare phenomena of geomagnetic anomalies are an objective reality,being well-correlated with the occurrence of earthquakes.It has been found that most earthquakes occur in the vicinity of the boundary line of sudden change of the low-point displacement and generally "within four days before and after the 27th or 41st day counting from the day of appearance of the anomaly.The anomalies of diurnal-variation amplitude near the epicentral area have been also studied before Yutian Ms7.3 and Kunlunshan Ms8.1 earthquakes.The low-point displacement is one of complicated geophysical phenomena influenced by many factors and its mechanism of "exploring-inducing-triggering" is still under-study.
中文关键词	地磁"低点位移" ; 日变幅 ; 于田7.3级地震 ; 昆仑山口西8.1级地震 ; 强震预测
英文关键词	geomagnetic low-point displacement diurnal-variation amplitude Yutian Ms 7.3 earthquake Kunlunshan Ms8.1 earthquake strong earthquake prediction
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:3484720
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222197
作者单位	1.中国地震局地震预测研究所, 北京 100036, 中国; 2.中国地震台网中心, 北京 100045, 中国
推荐引用方式 GB/T 7714	丁鉴海,余素荣,王亚丽. 地磁"低点位移"现象与强震预测研究[J],2008,23(6):1011-1017.
APA	丁鉴海,余素荣,&王亚丽.(2008).地磁"低点位移"现象与强震预测研究.,23(6),1011-1017.
MLA	丁鉴海,et al."地磁"低点位移"现象与强震预测研究".23.6(2008):1011-1017.