Bruinsma S. L., Forste C., Abrikosov O., Marty J. C., Rio M. H., Mulet S., Bonvalot Sylvain. (2013). The new ESA satellite-only gravity field model via the direct approach. Geophysical Research Letters, 40 (14), p. 3607-3612. ISSN 0094-8276.
Titre du document
The new ESA satellite-only gravity field model via the direct approach
Bruinsma S. L., Forste C., Abrikosov O., Marty J. C., Rio M. H., Mulet S., Bonvalot Sylvain
Source
Geophysical Research Letters, 2013,
40 (14), p. 3607-3612 ISSN 0094-8276
Reprocessed Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) gravity gradient data were combined with data from Laser Geodynamics Satellite (LAGEOS) 1/2 and Gravity Recovery and Climate Experiment (GRACE) to generate a satellite-only gravity field model to degree 260 using the direct approach, named DIR-R4. When compared to Earth Gravitational Model 2008 (EGM2008), it is more accurate at low to medium resolution thanks to GOCE and GRACE data. When compared to earlier releases of ESA GOCE models, it is more accurate at high degrees owing to the larger amount of data ingested. It is also slightly more accurate than ESA's fourth release of the time-wise model (TIM-R4), as demonstrated by GPS/leveling, orbit determination tests, and an oceanographic evaluation. According to the formal, probably too optimistic by a factor of 2-2.5, cumulated geoid (1.3cm) and gravity anomaly (0.4 mGal) errors at 100km resolution, the GOCE mission objectives have been reached.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
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Géophysique interne [066]
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Télédétection [126]
