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The geopotential to (14, 14) from a combination of satellite and gravimetric data

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Bulletin Géodésique (1946-1975)

Abstract

A set of2261 5°×5° mean anomalies were used alone and with satellite determined harmonic coefficients of the Smithsonian' Institution to determine the geopotential expansion to various degrees. The basic adjustment was carried out by comparing a terrestrial anomaly to an anomaly determined from an assumed set of coefficients. The (14, 14) solution was found to agree within ±3 m of a detailed geoid in the United States computed using1°×1° anomalies for an inner area and satellite determined anomalies in an outer area. Additional comparisons were made to the input anomaly field to consider the accuracy of various harmonic coefficient solutions.

A by-product of this investigation was a new γE=978.0463 gals in the Potsdam system or978.0326 gals in an absolute system if −13.7 mgals is taken as the Potsdam correction. Combining this value of γE withf=1/298.25, KM=3.9860122·10 22 cm 3/sec 2, the consistent equatorial radius was found to be6378143 m.

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Rapp, R.H. The geopotential to (14, 14) from a combination of satellite and gravimetric data. Bull. Geodesique 91, 47–80 (1969). https://doi.org/10.1007/BF02524845

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