geoid


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ge·oid

 (jē′oid′)
n.
The hypothetical surface of the earth that coincides everywhere with mean sea level.
[German, from Greek geoeidēs, earthlike : gē, earth + -oeidēs, -oid.]
ge·oid′al (-oid′l) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

geoid

(ˈdʒiːɔɪd)
n
1. (Geological Science) a hypothetical surface that corresponds to mean sea level and extends at the same level under the continents
2. (Physical Geography) the shape of the earth
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ge•oid

(ˈdʒi ɔɪd)

n.
an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents.
[1880–85; < Greek geoeidḗs earthlike. See geo-, -oid]
ge•oi′dal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Gravity anomalies are mainly used for (1) determination of the geoid, (2) interpolation and geophysical extrapolation of gravity, (3) geological mapping and exploration for natural resources, and (4) investigation of the Earth's crust.
An improved gravity anomaly grid and a geoid model for Estonia/Tapsustatud raskusjou anomaaliate vorgustik ja geoidi mudel Eestis/[TEXT NOT REPRODUCIBLE IN ASCII]
Presentation at Nordic Geodetic Commission Working Group of Geoid and Height Systems meeting, Tallinn, 12-18 March 2016.
Storminess-related rhythmic ridge patterns on the coasts of Estonia
The results show that the current relative accuracy of the most accurate geoid models is better than 10 mm.
Validation of regional geoid models for Poland: Lower Silesia case study
Keywords:Global geopotential model, GNSS/levelling, Geoid undulations, Orthometric and ellipsoidal heights.
An evaluation of recent global geopotential Models for strip area project in Turkey
On local and national scale, gravity data have been applied to gravimetric geoid modelling (Maasik 1952; Vermeer 1994; Jurgenson 1998; Ellmann 2001; Mardla et al.
Gravity anomaly field over Estonia/Raskuskiirenduse anomaalvalja mudel Eestis
The degree variance differences and cumulative geoid differences between EGMGOCE, EIGEN5C and EGMD5 are shown in Fig.
An alternative method to improve gravity field models by incorporating GOCE gradient data/Metodo alternativo para mejorar los modelos de campo gravitacional al incorporar informacion del satelite Explorador de la Circulacion Oceanica y de Gravedad
Despite the fact that Torge in 1999 (Torge, 1999) had used these methods, he showed that the difference between surfaces of reference (reference ellipsoid and geoid) did not effect on the result of determined velocity of vertical movements of the Earth's surface.
THE RESEARCH OF INTERRELATION BETWEEN SEISMIC ACTIVITY AND MODERN VERTICAL MOVEMENTS OF THE EUROPEAN PERMANENT GNSS-STATIONS
In this study, the mean elevations of various hemispheres were calculated or estimated from satellite geoid data.
Abstracts of presentations at the 2016 (126th) Annual Meeting of the Tennessee Academy of Science
Mean Sea Level (MSL) is an approximation of the geoid based on tidal measurement at individual locations, and is used extensively for topographic and engineering surveying and mapping.
The Australian hydrographic service--charting Australia, the continent encircled by sea
He said the new OS "geoid model" meant heights taken with GPS equipment would alter "not by a great amount, but in the case of Calf Top, by an amount that makes all the difference".
The men who went up a hill but came down a mountain; 609.602 metres (a mountain by only 2mm)

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