摘要
数字高程模型（ＤＥＭ）作为洪涝灾害遥感研究的辅助信息源可以提供两类信息，一是地面点的高程和所处地形部位以及与邻域的相互关系等方面的背景数据，二是研究区高程－面积关系、高程－容积关系及面积－容积关系等基本关系信息。利用这些背景数据和基本关系信息，结合洪水期遥感图像的解译，可以获取洪水淹没范围、淹没区积水量、水深、淹没历时以及作物受灾程度等灾情信息。本文阐述了这种研究的原理和方法。
As the supplementary information source of remote sensing to the research on flood and waterlogging damages, the DEM Can provides two kinds of information, that is, the background data including the elevation, the location of ground spots and the relationships between spots, the basic relationships including the elevation-area relation, the elevationvolume relation and area-volume relation, etc. By these data and relations, the information of disastrous condition can be acquired from the interpretation of remote sensing image of flooding period, which includes the inundated area, water volume, water depth, inundated time and corp damaged content, etc. In this paper, the theory and method are stated for this research.
出处
《国土资源遥感》
CSCD
1996年第1期42-50,共9页
Remote Sensing for Land & Resources
基金
湖北省高校青年科学研究发展计划
国家自然科学基金
关键词
洪涝
灾害
信息提取
损失估算
数字高程模型
flood and waterloggins damage DEM supplementary information information extraction loss estimation
