Refinement of the geopotential scale factor R(sub 0) on the satellite altimetry basis

Details Refinement of the geopotential scale factor R(sub 0) on the satellite altimetry basis Refinement of the geopotential scale factor R(sub 0) on the satellite altimetry basis

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994em%26p...65...79n&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 65, no. 1, p. 79-88

Statistics

Computation

2

Earth Gravitation, Geodetic Accuracy, Geoids, Geophysics, Geopotential, Ocean Surface, Satellite Altimetry, Scale (Ratio), Approximation, Atmospheric Pressure, Computation, Geosat Satellites, Graphs (Charts), Legendre Functions, Maps, Tides

Scientific paper

Altimetric measurements of the GEOSAT satellite were used for the determination of geopotential scale factor R(sub 0). The geopotential value W(sub 0) on the geoid surface was then computed (W(sub 0) = GM/R(sub 0)). The GEOSAT Geophysical Data Records (GDR's) covering an initial period of the Exact Repeat Mission (ERM) were filtered and processed. The necessary corrections were made in order to allow a precise detection of the sea surface. Gravitational geopotential, rotation and permanent tides were taken into account and the equipotential surface which is the best approximation of the sea surface was found. The determination of the potential value W(sub 0) on the mean geoid surface in this way is very promising. An associated value with W(sub 0) -- the geopotential scale factor R(sub 0) -- seems to be a very good Earth dimension defining quantity. Moreover, there are many possible applications of W(sub 0) (R(sub 0)) in modern geophysics. The incorporation of one of these parameters -- we now recommend R(sub 0) -- into the set of the Primary Geodetic Parameters (PGP) is discussed and suggested.

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