Accession Number : AD0282378

Title :   CORRECTIONS TO GRAVITY FORMULA FROM DIRECT OBSERVATIONS AND ANOMALIES EXPRESSED IN LOWER DEGREE SPHERICAL HARMONICS

Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS INST OF GEODESY PHOTOGRAMMETRY AND CARTOGRAPHY

Personal Author(s) : UOTILA,U.A.

Report Date : APR 1962

Pagination or Media Count : 1

Abstract : The author had at his disposal 11,586 1 deg x 1 deg mean free air anomalies and 8,172 1 deg x 1 deg mean isostatic anomalies, which were determined from surface gravity observations. Using the least-squares solution, he computed corrections to the International Gravity Formula, and he also computed the theoretical gravity formula for the triaxial ellipsoid. He determined the coefficients for lower degree spherical harmonics. These were computed two different ways: (1) using surface gravity anomalies alone, (2) combining surface gravity information and zonal harmonics computed from satellite data. Departures from the International Gravity Formula, and the contributions of the lower degree spherical harmonics to the undulation of the geoid are given in map form. All computations are referred to the Potsdam System, g = 981.27400 gal. (Author)

Descriptors :   *GEODESICS, *GRAVITY, *LEAST SQUARES METHOD, CORRECTIONS, HARMONIC ANALYSIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE