摘要
在缺乏重力资料的地区(例如我国西部山区),利用地形资料来计算相对垂线偏差的主值是易行的方法.其优点是全部工作可在室内完成.地形均衡垂线偏差既可用于线性内插转化为天文大地垂线偏差,又可用于直接对山区一般控制测量的结果进行归算,因此讨论它的计算方法是有重要意义的.本文从地形均衡垂线偏差的基本理论入手,导出了计算模型,并根据实践讨论了计算方法.
In the areas lacking gravity information,i.e.the west mountainous districts of china,to obtain the main value of astro-geodetic deflection,the adoption of topographic materials is a simple and useful method.The advantage is that all the work can be done indoors. Topographic-isostatic deflection can not only be transformed to the astro-geodetic but al- so directly used as preliminary calculation for general control survey in mountainous dis- tricts.Hence,it is important for us to research the method of calculation about topographic-isostatic defletion.This paper presents the mathematical model based on the basic theory and discusses the methods practised.
关键词
地壳
均衡理论
垂线偏差
数学模型
theory of topographic—isostatical
potential disturbance
deflection of the vertic
mathematical model
