Physics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999em%26p...84..163b&link_type=abstract
Earth, Moon, and Planets, v. 84, Issue 3, p. 163-176 (1999).
Physics
1
Geoidal Geopotential, Topex/Poseidon Altimetry, Geoidal Geopotential, Topex/Poseidon Altimetry
Scientific paper
The TOPEX/POSEIDON (T/P) satellite altimeter data from January 1, 1993to October 24, 1999 (cycles 11 261) was used for investigating thelong-term variations in the geoidal geopotential W0 and/orin the geopotential scale factor R0 = GM/W0 (GM is theadopted geocentric gravitational constant). The mean valuesdetermined for the whole period covered are: W0 =(62 636 856.161 ± 0.002) m2 s-2, R0 =(6 363 672.5448 ± 0.0002) m. The actual accuracy is limited bythe altimeter calibration error (2 3 cm) and it isestimated to be about ± 0.5 m2 s-2 (± 5 cm).The yearly variations of the above mean values are at the formalerror level. No long-term trend in W0, representing the oceanvolume change, was found for the seven years period 1993 9 on thebasis of T/P altimeter (AVISO) data. No sea surface topography modelwas used in the solution.
Burša Milan
Kenyon Steve
Kouba Jan
Müller Achim
Raděj Karel
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