基于GIS的黄河三角洲地区控制点沉降初步分析  

Analysis of Subsiding on Control-points in the Yellow River Delta Zoom Based on GIS Methods

作　　者：苏衍坤 孙现申[2] 王历进 李雪莉 

机构地区：[1]济南军区测绘信息中心,山东济南250014 [2]解放军信息工程大学测绘学院,河南郑州450052 [3]山东省国土测绘院,山东济南250013

出　　处：《海洋测绘》2010年第5期32-35,共4页Hydrographic Surveying and Charting

摘　　要：黄河三角洲地区许多控制点存在着不同程度的沉降,个别点年沉降量高达8.01 cm。该三角洲地理环境复杂,控制网复测成本畸高,部分控制点甚至因地形变化而无法复测。为此,在无法应用常规变形分析理论方法的情况下,对该地区建国以来的测绘档案资料进行数据挖掘,利用G IS的空间分析方法,发现了一些用常规方法难以发现的规律,并进行了初步验证,进而对该类地区控制测量的一些现象重新分析,并总结了对建、管、用网的参考意义。In the Yellow River Delta zoom,many control-points have been subsiding.Some of them are even subsiding at 8.01cm/a.Because of complexity of geographic circumstance in the delta,surveying becomes very expensive,and people even can＇t re-survey in some place where geographic circumstance has greatly changed.Therefore,in this paper,author gives some conclusion by summing-up achievement and data of surveying and mapping since 1950.Some conclusion,which can＇t be reached by normal deformation methods,have been got by GIS visualization methods,and primarily exam have been given too.This paper is benefit to control-nets survey and management in similar area.

关 键 词：控制网管理 测绘档案资料 数据挖掘 黄河三角洲湿地 软土地面沉降 数据可视化分析 

分 类 号：P221[天文地球—大地测量学与测量工程]