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所在平台: Udemy |
课程主页: https://www.udemy.com/course/watershed-analysis-using-gis/
课程评论：没有评论
课程名称：使用GIS进行流域分析 课程概述：本课程旨在探索和下载特定研究区域的SRTM数字高程模型（DEM）数据。SRTM DEM是一个独特的产品，由NASA和美国国家地理局与德国和意大利航天局合作生成。课程内容涉及使用ArcGIS的水文工具，针对给定的汇水点划定流域区域，并在流域内识别流线网络及其流序。流域指的是收集和排放其覆盖区域内所有降雨的地球表面土地区域，最终将水流引向高阶支流通道的共同出口。汇水点是指在流域内沿流线的最低海拔点，所有水流均从此处流出。分析的数据用于估算不同海拔范围（变化的坝高）的储水区域和储水容量。课程最后将准备一个信息丰富且综合的流域地图布局设计。通过正确汇编每个分析的数据到ArcGIS平台，最终得出更具信息性的地图设计和准备。地图构成的过程始于地图布局的准备。除了数据，地图还有其他一些要素，使其成为有效清晰传播信息的整体包。
The course is designed for explore and download of SRTM Digital Elevation Model (DEM) data of specific study area. The Shuttle Radar Topography Mission (SRTM) DEM is unique product which was produced by NASA and NGA in cooperation with German and Italian space agency. Further, using of hydrology tools of ArcGIS, watershed area is delineated for given pour point and identification of streamline network with stream order within watershed area. Watershed is the area of land on the earth surface that collects and drains all the rainfall within its coverage area and streams to a common outlet along the high order stream channel. And the term pour point is the lowest point in term of elevation along the streamline within watershed at which all the water flows out of the watershed area. The analyzed data is used for estimation of storage area and storage volume capacities at a series of elevation range (a variable dam heights). The course is ended with the preparation of an informative and comprehensive watershed area map layout design. The proper compilation of each analyzed data into ArcGIS platform finally concluded into a better and informative map design and preparation. The process of map composition starts with preparing a layout for the map. Apart from the data, a map has certain other things that make map a package of effective and clear communication.
