UNIT 38 - DIGITAL ELEVATION MODELS

UNIT 38 - DIGITAL ELEVATION MODELS

Compiled with assistance from Brian Klinkenberg, University of British Columbia


For Information that Supplements the Contents of this Unit:

DEM, GIS, GPS, Remote Sensing & Soils Information Sources -- ESRI; International GPS Service; EOSAT homepage (includes Russian Kosmos KVR-1000 data); satellite imagery FAQs; Virtually Hawaii (collection of remotely sensed data and images; etc.
Digital Elevation Modeling -- Creating a TIN; viewing a TIN; Converting a TIN to polygon coverage.
USGS Digital Elevation Models (Delaney) -- Data accuracy, acquisition, applications and availability.
3-D Visualization of Geologic Data -- Examples of Digital Elevation Models (Dave Miller)
Environmental Modeling and Visualization with GRASS (US Military) -- Interacting fields; surface modeling; multidimensional modeling; 3D scattered data interpolation; terrain analysis; etc.
Terrain Analysis and Erosion Modeling (US Military) -- (Graphics) Elevation surface; slope angle; aspect angle; profile and tangential curvature; topographic potential for net erosion/deposition; etc.


  • A. INTRODUCTION
  • B. ESTIMATING ELEVATION
  • C. ESTIMATING SLOPE AND ASPECT
  • D. DETERMINING DRAINAGE NETWORKS
  • REFERENCES
  • DISCUSSION AND EXAMINATION QUESTIONS
  • NOTES

    UNIT 38 - DIGITAL ELEVATION MODELS

    Compiled with assistance from Brian Klinkenberg, University of British Columbia

    A. INTRODUCTION

    What is a Digital Elevation Model?

    Creation of DEMs

    Uses of DEMs

    Hydrologic functions on DEMs

    B. ESTIMATING ELEVATION