Accession Number : AD0487435

Title :   THE EQUATORIAL RADIUS AND THE ZERO-ORDER 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 close-orbit satellite analysis; and the rotational velocity of the earth. With these parameters defining a mean earth ellipsoid it is possible to find the zero-order 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