摘要
利用冀鲁豫测网的流动重力5期观测成果,探讨了重力场变化与封丘地震的关系。研究发现:冀鲁豫交界地区的重力点值在封丘地震前后出现了下降-上升-下降的变化过程,较好地对应了封丘ML4.8地震孕育-发震-震后调整的过程。该重力变化可能是封丘地震的异常反映。
In the light of the 5 periods of mobile gravity observation results of the Ji-Lu-Yu network, the relation between the gravity and the Fengqiu earthquake is discussed. It is found that before and after Fengqiu earthquake the gravity station value in the juncture area of Hebei,Shandong and Henan under went three stages：first,it went down, then rose and finally, went down again. It reflected the three stages of the Fengqiu earthquake process as seismogenic stage-occurance-post-earthquake adjustment. It is proved that the gravity variation in Ji-Lu-Yu observation region was the anomaly before Fengqiu earthquake.
出处
《大地测量与地球动力学》
CSCD
北大核心
2009年第B08期7-10,共4页
Journal of Geodesy and Geodynamics
基金
中国地震局地球物理勘探中心青年科学基金(20080305)
关键词
冀鲁豫测网
封丘地震
重力变化
异常
震后调整
Ji-Lu-Yu observation region
Fengqiu earthquake
gravity variation
anomaly
post-earthquake adjustment
