基于ArcGIS的连云港港区海陆一体化三维地形建模

港区地形建模中水边线定位及规则地形单元的高精度表达是建模过程的关键。以连云港港区为例，着重介绍了ArcGISIO环境下基于规则格网的港区海陆一体化地形建模过程。结果表明，基于地形建模工具TopotoRaster的算法特点，将海、陆分区并作为陆地与水下地形建模的约束条件，可获得高精度的水边线定位；而利用栅格条件分析功能可以实现对规则地形单元高程属性的修正，从而实现对复杂地形特征的精细表达。建模过程对于港区地形建模具有一定参考价值。

3D Terrain Modeling for Lianyungang Harbor District Based on ArcGIS

Abstract： The key of harbor district terrain modeling process lies in the terlines and the accurate representation of the regular terrain units. In harbor district is taken as an example to introduce the regular gri ArcGISIO environment. Practice shows that based on the terrain al te ori precise locating of the wa＇- this paper, Lianyungang rrain modeling process in thm of Topo to Raster, ahighly precise waterline location can be obtained when the sea area and land area serve as the con- straining conditions of land terrain interpolation and underwater terrain interpolation respective- ly, and the condition analysis function of the software can also be used to modify elevation vahies of regular terrain units, which means it is possible to represent finely the complex terrain fea- tures. Such a modeling method is of valuable reference to harbor district terrain modeling.