艾比湖阶地三维反演研究

A Three-Dimensional Inversion Study of Ebinur Terrace

以ASTER、ETM、SPOT遥感影像为数据源,应用遥感软件对影像增强处理,突出了艾比湖湖积堤信息。将实际采样点、卫星遥感影像和DEM数据叠加,确定了湖岸线和阶地遗址。通过构建水淹模型,方便准确地获得艾比湖阶地的实地三维信息,制作高精度DEM数据,生成仿真的三维数字地形模型,实现了艾比湖的三维显示以及三维水淹,可以从不同角度、视点和高度观察地貌的整体和部分特征,借助地理信息系统工具还可以准确地计算不同时期湖面面积、体积,确定水淹范围,反演不同时期艾比湖湖面情况,对研究艾比湖难以到达区域的地貌形态和地貌演化具有十分重要的意义。

With ASTER, ETM and SPOT remote -sensing images as the data sources, the authors used remote - sensing software to enhance the images so as to highlight the embankment information of the Ebinur Lake. By superimposition of the practical sampling points, satellite remote - sensing images and DEM data, the relic sites of lakeshore and terrace were determined. Through setting up the flooding model, the authors obtained the three - dimensional information of the Ebinur Lake terrace easily and accurately, formulated high -precision DEM data, created simulated three -dimensional landform model, and realized three -dimensional demonstration and three - dimensional flooding. The overall and partial characteristics of the landform can be observed from different angles, different points of view and different attitudes. With the help of the GIS system tool, the lake surface areas, volumes and flooding ranges of different periods can be accurately calculated, and the surface situation of the Ebinur Lake can be understood through inversion. All these results are of great significance in the study of the morphologic shape and evolution of the Ebinur Lake.