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Updating and validating the French gravity terrain corrections out to a distance of 167 km
- Source :
-
Comptes Rendus Geoscience . Apr2002, Vol. 334 Issue 7, p449. 6p. - Publication Year :
- 2002
-
Abstract
- For regional and national study purposes, there is a high need for updating the terrain corrections (TC) in the French gravity database. We have recomputed the TC for all the French gravity stations from 50 m out to a distance of 167 km. We compute the TC with a flat-top-prism algorithm and three DEM with grid spacing of 50, 250 and 1000 m, used in the zones 53 m/3 km, 3 km/10 km et 10 km/167 km, respectively. Analysing the DEM/station <f>Δ</f>z and comparing our results to the ones previously obtained in the Alps area, we estimate the accuracy of our TC to be better than 1 mGal. To cite this article: G. Martelet et al., C. R. Geoscience 334 (2002) 449–454. [Copyright &y& Elsevier]
- Subjects :
- *GRAVITY
*GEOGRAPHY
*RELIEF models
*ALGORITHMS
Subjects
Details
- Language :
- French
- ISSN :
- 16310713
- Volume :
- 334
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Comptes Rendus Geoscience
- Publication Type :
- Academic Journal
- Accession number :
- 8730299
- Full Text :
- https://doi.org/10.1016/S1631-0713(02)01779-0