DEM Analysis and Terrain Modeling
An advanced exploration of Digital Elevation Models (DEMs), the continuous raster surfaces that empower 3D topographic and hydrological modeling in GIS. This module covers terrain derivatives, viewshed analysis, and watershed delineation.
Topics Covered
Learning Objectives
Understand the raster architecture underlying a bare-earth DEM and how it differs from a Digital Surface Model (DSM).
Calculate and interpret first-order terrain derivatives including Slope (gradient steepness) and Aspect (direction of steepest descent).
Execute Viewshed Analysis to determine line-of-sight visibility across complex 3D terrain.
Command the multi-step Hydrological Modeling sequence (Fill Sinks, Flow Direction, Flow Accumulation) to delineate watersheds and stream networks from DEMs.
Module Content
This comprehensive module provides in-depth knowledge on DEM Analysis and Terrain Modeling.
- ✓ Detailed theory and concepts
- ✓ Practical examples and case studies
- ✓ Step-by-step tutorials
- ✓ Interactive exercises
- ✓ Quiz with 0.5 negative marking
Module Info
Level
AdvancedDuration
6 hours
Topics
5
Pro Tip
Complete the learning content first, then take the quiz to test your knowledge!
📚 Prerequisites
Complete Beginner and Intermediate modules before starting this course.
Ready to Test Your Knowledge?
Take the quiz to assess your understanding of dem analysis and terrain modeling