Digital Elevation Model (DEM)

A Digital Elevation Model (DEM) is a digital representation of the Earth's surface elevation. It uses grid data to show heights and depths of terrain, allowing us to visualize mountains, valleys, and plains in three dimensions. DEMs are created from various data sources, including satellite imagery and aerial surveys, and are used for applications like urban planning, environmental studies, and disaster management. They help experts analyze landscapes, simulate water flow, and assess natural hazards by providing detailed information about landforms and topography.