地质图常用地图投影变形特征分析

Analysis of the Deformation Characteristics in Projection of Commonly Used Geological Map

谢春雨

XIE Chunyu

中国石油化工股份有限公司上海海洋油气分公司研究院, 上海 200120

Institute of SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, China

介绍了地图投影产生的原因和基本概念,概述了地图投影的分类方法,重点分析了油气勘探中常用地图投影的变形特征。通过分析认为高斯投影、UTM投影的长度、面积变形较小,墨卡托投影的长度、面积变形普遍较大。最后文章指出在编制地质图件时投影方式的选择需要特别慎重。

The basic definition and the classification methods of the map projection have been introduced in this paper,with focus on discussion about the deformation characteristics of commonly used map projection in oil and gas exploration.It is believed through analysis that Gauss projection and UTM projection are relatively small in deformation length and deformation area,while Mercator projection is relatively large in deformation length and deformation area.Finally,it is pointed out in this paper that it is necessary to make careful consideration when selecting the way of projection during compilation of geological map.

https://doi.org/10.3969/j.issn.1008-2336.2015.02.030