GD1-2 - Approximating the Earth’s shape with geoids
You are currently viewing an archived version of Topic Earth's Shape, Sea Level, and the Geoid.
If updates or revisions have been published you can find them at Earth's Shape, Sea Level, and the Geoid.
Author and Citation Info:
DiBiase, D., DeMers, M., Johnson, A., Kemp, K., Luck, A. T., Plewe, B., and Wentz, E. (2006). Approximating the Earth’s shape with geoids. The Geographic Information Science & Technology Body of Knowledge. Washington, DC: Association of American Geographers. (2nd Quarter 2016, first digital).
Learning Objectives:
Explain why gravity varies over the Earth’s surface
Explain how geoids are modeled
Explain the role that the U.S. National Geodetic Survey plays in maintaining and developing geoid models
Explain the concept of an equipotential gravity surface (i.e., a geoid)
You are currently viewing an archived version of Topic Earth's Shape, Sea Level, and the Geoid. If updates or revisions have been published you can find them at Earth's Shape, Sea Level, and the Geoid.
DiBiase, D., DeMers, M., Johnson, A., Kemp, K., Luck, A. T., Plewe, B., and Wentz, E. (2006). Approximating the Earth’s shape with geoids. The Geographic Information Science & Technology Body of Knowledge. Washington, DC: Association of American Geographers. (2nd Quarter 2016, first digital).