Abstract By finely handling a batch of gravity difference data in the northern segment of the Red River fault zone, we found the temporal variation of these gravity differences in the period from 1985 to 2006. The research results show that: 1)The fault activity is cyclical by alternatelly being strong and weak, and in the two different processes both of the extrusion degree and time duration are different. 2) The fault activity has obviously segmental character that the fault activities in JianchuanXiaguan are basically the same and Dingxiling is the indicative place; in Midu, however, there is a varying law of being mirror relationship with JianchuanXiaguan. 3)The gravity change caused by fault activity comes mainly from the density change of underground substances, and the crustal deformation, which howevery can be ignored for it is rather weak.
Sun Shaoan,Shen Chongyang,and Xiang Aiming. GRAVITY EFFECT FROM PRESENT ACTIVITY OF NORTHERN SEGMENT OF RED RIVER FAULT ZONE[J]. , 2009, 29(3): 11-15.
Sun Shaoan,Shen Chongyang,and Xiang Aiming. GRAVITY EFFECT FROM PRESENT ACTIVITY OF NORTHERN SEGMENT OF RED RIVER FAULT ZONE[J]. jgg, 2009, 29(3): 11-15.
