Authors: Meyer, Thomas H.; Roman, Daniel R.; Zilkoski, David B.

Source: Surveying and Land Information Science, Volume 66, Number 2, June 2006 , pp. 149-160(12)

Publisher: The National Society of Professional Surveyors, The American Association for Geodetic Surveying, and The Geographic and Land Information Society

Abstract:

This is the third paper in a four-part series considering the fundamental question, "what does the word "height" really mean?" The first paper reviewed reference ellipsoids and mean sea level datums. The second paper reviewed the physics of heights culminating in a simple development of the geoid and explained why mean sea level stations are not all at the same orthometric height. This third paper develops the principle notions of height, namely measured, differentially deduced changes in elevation, orthometric heights, Helmert orthometric heights, normal orthometric heights, dynamic heights, and geopotential numbers. We conclude with a more in-depth discussion of current thoughts regarding the geoid.

Document Type: Research article

Publication date: 2006-06-01

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• Surveying and Land Information Science (SaLIS) is the official publication of the American Association of Geodetic Surveying (AAGS), the Geographic and Land Information Society (GLIS), and the National Society of Professional Surveyors (NSPS).
  
  SaLIS is a scientific journal devoted to reporting research and new work conducted to advance geodetic surveying, land surveying, large-scale mapping, and geographic information systems designed to advance the development and management of the cadastral parcel data layer and other land information applications. SaLIS publishes research articles, technical papers, technical notes, papers on the current state of surveying education, surveying history, book reviews, and current literature reviews. Every four years, the journal publishes the U.S. Report to the International Federation of Surveyors (FIG). The Proceedings of the Surveying Teachers Conference are published bi-annually.
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