
Accession Number : AD0487435
Title : THE EQUATORIAL RADIUS AND THE ZEROORDER UNDULATION OF THE GEOID.
Descriptive Note : Interim rept.,
Corporate Author : OHIO STATE UNIV COLUMBUS DEPT OF GEODETIC SCIENCE AND SURVEYING
Personal Author(s) : Rapp, Richard H.
Report Date : MAY 1966
Pagination or Media Count : 26
Abstract : The equatorial radius (a) of the earth and the potential (W sub o) of the geoid may be determined from four, essentially independent, parameters: equatorial gravity, gamma sub e, from terrestrial gravity measurements;KM determined from lunar probes; the flattening,f, from closeorbit satellite analysis; and the rotational velocity of the earth. With these parameters defining a mean earth ellipsoid it is possible to find the zeroorder undulation (N sub o) that must be added to the undulation obtained from the Stokes' equation in order to yield an absolute undulation with respect to a given reference ellipsoid. The following values were obtained: a = 6378153.9 + or  8.7 m; W sub o = 6263674.7 + or  8.5 kgal m; N sub o = 203.8 + or  8.7 m (with respect to the International Ellipsoid).
Descriptors : (*EARTH(PLANET), GRAVIMETRIC ANALYSIS), GEODESICS, GRAVITY, ANOMALIES, INERTIA, BOUNDARY VALUE PROBLEMS, MATHEMATICAL MODELS.
Subject Categories : Geodesy
Distribution Statement : APPROVED FOR PUBLIC RELEASE