任丘—保唐—沧州重力异常的分析  

ANALYSIS ON GRAVITY ANOMLIES AROUND RENQIU—BAOTANGCANGZHOU AREA

作　　者：范文[1] 李清林[1] 李天生[1] 栗文山[1] 

机构地区：[1]国家地震局地球物理勘探大队

出　　处：《华北地震科学》1990年第4期64-71,共8页North China Earthquake Sciences

摘　　要：本文首先对任丘～保唐～沧州一带的重力复测资料进行了拟稳平差处理、地下水和地形变改正,然后对该区1986年以来出现的重力场变化作了分析;结果表明:在任丘～保唐～沧州一带仍存在着+60～+80×10_(-8)m/s_2的高值异常。并认为该异常主要由其深部变异因素引起,故应给予高度重视。In this paper, the quasi-stationary adjustment treatent, ground water correction and ground deformation correction of the data of repeated gravity measurements around Renqiu-Baotang-Cangzhou area are made. Then the variation of gravity field appeared since 1986 is discussed. The results show that around this area exists a high value anomaly of+60～+80×10^(-8) m/s^2. It can be inferred that this anomaly is mainly caused by deep variations. Therefore, it is necessary to pay attentionto it.

关 键 词：重力异常 拟稳平差 地震 断裂 

分 类 号：P315.2[天文地球—地震学]