geoid height

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• Geoid — The geoid is that equipotential surface which would coincide exactly with the mean ocean surface of the Earth, if the oceans were in equilibrium, at rest, and extended through the continents (such as with very narrow canals). According to C.F.… …   Wikipedia

• geoid — geoidal, adj. /jee oyd/, n. 1. an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents. 2. the geometric figure formed by this surface, an ellipsoid flattened at the poles. [1880 85; < Gk… …   Universalium

• Orthometric height — The orthometric height is the distance H along a line of force from a given point P at the physical surface of an object to the geoid. Orthometric heights are what are usually used in the US for ordinary engineering work. Values for measured… …   Wikipedia

• Normal height — Normal heights are heights above sea level, one of several types of height which are all computed slightly differently. Alternatives are: orthometric heights and dynamic heights. The normal height H * of a point is computed from geopotential… …   Wikipedia

• Dynamic height — is a way of specifying the height of a point above a reference, as opposed to orthometric height or normal height. Dynamic height is constant if one follows the same gravity potential as they move from place to place. Because of variations in… …   Wikipedia

• Earth radius — The Earth s shape, like that of all major planets, approximates a sphere. A true sphere has a unique radius, but on Earth the distance from the mean sea level at each point on the surface to the center (the radius of the Earth at a point on the… …   Wikipedia

• Normalhöhennull — NHN height sign in the Harz mountains of Germany on the Brocken road Normalhöhennull ( standard elevation zero ) or NHN is a standard reference level, the equivalent of sea level, used in Germany to measure height. In geographical terms, NHN is… …   Wikipedia

• ГОСТ 22268-76: Геодезия. Термины и определения — Терминология ГОСТ 22268 76: Геодезия. Термины и определения оригинал документа: 114. Абрис Ндп. Кроки D. Gelandeskizze Gelandekroki E. Outline Field sketch F. Croquis Схематический чертеж участка местности Определения термина из разных документов …   Словарь-справочник терминов нормативно-технической документации

• World Geodetic System — The World Geodetic System defines a reference frame for the earth, for use in geodesy and navigation. The latest revision is WGS 84 dating from 1984 (last revised in 2004), which will be valid up to about 2010.Earlier schemes included WGS 72, WGS …   Wikipedia

• Vertical deflection — The vertical deflection (deflection of the plumb line, astro geodetic deflection) at a point on the earth is a measure of how far the direction of the local gravity field has been shifted by local anomalies such as nearby mountains. (Here gravity …   Wikipedia

• Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …   Wikipedia