摘要
近些年来,地理信息系统(GIS)在理论及技术方法等方面日臻完善,同时GIS技术被广泛地应用于地质工作的各个领域。以地理信息系统(GIS)为平台,利用矢量化地形高程数据,构建岷江上游地区数字高程模型(DEM),并对数字图像进行了几何校正,镶嵌配准,实现了岷江上游地区地形地貌的三维模拟显示;利用DEM分析探讨地貌形态,生成一系列地貌分析专题图如地貌高程图、地形坡度图等,并进行了初步的讨论分析,得出岷江上游地区主体属于中高山陡崖地貌,地形地貌总体呈现由NW向SE倾斜的分布趋势。而岷江源头地区东侧则由于新构造活动强烈,具有隆升幅度较西侧剧烈的特征。通过对岷江上游地区地貌形态的分析研究,为中国东西部地貌边界带的新构造研究做了有益的补充。
In recent years, Geographic Information System(GIS) is booming in both theory and technique. At the same time, GIS is applied in almost every field of geosciences. Based on the techno-platform of GIS, by applying the datum of terrain vectorization, this paper constructs the Digital Elevation Model(DEM) of the Minjiang Upstream Region(MUR), and then by geometric revising and enchasing of digital image, the paper also achieves 3D-model visualizing of MUR topography. Moreover, we apply this technique to analyze geomorphic features, and generate a series of analysis theme figures. Finally, the paper concludes that the characteristic of MUR is mid-high steep geomorphic style, and because of the intense tectonic activity, the scope of eastern Minjiang headwater is more intense. meanwhile, the paper reinforces the neotectonic research on China geomorphic boundary.
出处
《中国地质灾害与防治学报》
CSCD
2004年第3期116-119,共4页
The Chinese Journal of Geological Hazard and Control
基金
国土资源部"十五"重点基础研究资助项目(20010202)
