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Wavelet modeling of regional and temporal variations of the Earth’s gravitational potential observed by GRACE / M.J. Fengler in Journal of geodesy, vol 81 n° 1 (January 2007)  

Public [article]  inJournal of geodesy > vol 81 n° 1 (January 2007) . - pp 5 - 15 Titre : Wavelet modeling of regional and temporal variations of the Earth’s gravitational potential observed by GRACE Type de document : Article/Communication Auteurs : M.J. Fengler, Auteur ; W. Freeden, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 5 - 15 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] GRACE [Termes IGN] mission spatiale [Termes IGN] modélisation [Termes IGN] potentiel de pesanteur terrestre [Termes IGN] variation Résumé : (Auteur) This work is dedicated to the wavelet modeling of regional and temporal variations of the Earth’s gravitational potential observed by the GRACE (gravity recovery and climate experiment) satellite mission. In the first part, all required mathematical tools and methods involving spherical wavelets are provided. Then, we apply our method to monthly GRACE gravity fields. A strong seasonal signal can be identified which is restricted to areas where large-scale redistributions of continental water mass are expected. This assumption is analyzed and verified by comparing the time-series of regionally obtained wavelet coefficients of the gravitational signal originating from hydrology models and the gravitational potential observed by GRACE. The results are in good agreement with previous studies and illustrate that wavelets are an appropriate tool to investigate regional effects in the Earth’s gravitational field. Copyright Springer Numéro de notice : A2007-037 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-006-0040-1 En ligne : https://doi.org/10.1007/s00190-006-0040-1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28403 [article]

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