摘要
本文以测量平差系统的可靠性理论为基础,对北京通县地区重力测网的可靠性进行了分析。结果表明:北京通县地区重力测网在可靠性方面存在着严重问题。建议对此重力测网进行改造,以增强可靠性。
In this paper, the realiability theory is used to discuss the realiability of gravity network in Tongxian area of Beijing . Based on the analysis of the separability of the gross errors from the change of gravity field that caused by tectonic activity,the author pointed out that the gross errors are completely related to the change of segment gravities, e. q. they are separated difficultly in most situation. There fore it is suggested that this network should be reformed to monitor the change of gravity field by using the repeated gravity measurements effectirely.
出处
《地壳形变与地震》
CSCD
1993年第2期60-66,共7页
Crustal Deformation and Earthquake
关键词
可靠性
重力测网
通县
地震预报
realiability analysis
gravity network
Tongxian of Beijing
