Environment / Geospatial / Computed

Digital Elevation Model

Satellite-derived Digital Elevation Model. A geospatially derived digital elevation model (DEM) is a type of spatial dataset that represents the three-dimensional relief of a terrain. DEMs are typically created using geographic information systems (GIS) technology, and are based on elevation data obtained from various sources, such as satellite imagery. These datasets can be used to create detailed maps and visualizations of the land surface, and can provide valuable information for a wide range of purposes, such as for analyzing the topography of an area, for understanding the distribution of natural or man-made features on the landscape, or for supporting the planning and management of land resources.