GD1-3 - Approximating the geoid with spheres and ellipsoids
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Author and Citation Info:
DiBiase, D., DeMers, M., Johnson, A., Kemp, K., Luck, A. T., Plewe, B., and Wentz, E. (2006). Approximating the geoid with spheres and ellipsoids. The Geographic Information Science & Technology Body of Knowledge. Washington, DC: Association of American Geographers. (2nd Quarter 2016, first digital).
Learning Objectives:
Identify the parameters used to define an ellipsoid
Differentiate the Clarke 1866 and WGS 84 ellipsoids in terms of ellipsoid parameters
Differentiate between a bi-axial and tri-axial ellipsoid and their applications
Explain why spheres and ellipsoids are used to approximate geoids
Distinguish between a geoid, an ellipsoid, a sphere, and the terrain surface
Describe an application for which it is acceptable to use a sphere rather than an ellipsoid
You are currently viewing an archived version of Topic . If updates or revisions have been published you can find them at .
DiBiase, D., DeMers, M., Johnson, A., Kemp, K., Luck, A. T., Plewe, B., and Wentz, E. (2006). Approximating the geoid with spheres and ellipsoids. The Geographic Information Science & Technology Body of Knowledge. Washington, DC: Association of American Geographers. (2nd Quarter 2016, first digital).