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World-wide synthetic tide parameters for gravity and vertical and horizontal displacements / K.H. Zahran in Journal of geodesy, vol 79 n° 6-7 (September - October 2005)  

Public [article]  inJournal of geodesy > vol 79 n° 6-7 (September - October 2005) . - pp 293 - 299 Titre : World-wide synthetic tide parameters for gravity and vertical and horizontal displacements Type de document : Article/Communication Auteurs : K.H. Zahran, Auteur ; G. Jentzsch, Auteur ; Günter Seeber, Auteur Année de publication : 2005 Article en page(s) : pp 293 - 299 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] déformation verticale de la croute terrestre [Termes IGN] force de gravitation [Termes IGN] marée terrestre [Termes IGN] modèle de simulation [Termes IGN] surcharge océanique Résumé : (Auteur) The response of the Earth's crust to the direct effect of lunisolar gravitational forcing is known as the body tide. The body tide is superimposed by surface-loading forces due to the pressure of the periodically varying ocean tide acting on the Earth, called ocean tide loading (OTL). Both body tide and OTL can be decomposed into components of the same frequency known as tidal parameters. However, OTL is more complicated than body tides because of the dynamic effects of the ocean. Estimating OTL requires a model of the ocean tides and knowledge of the elastic properties of the solid Earth. Thus, synthetic tide parameters (amplitude factors and phase leads) have been developed here on a world-wide grid for gravity and positional displacements. The body tide contributions were added to the oceanic contribution to provide the Earth tide response. The accuracy and reliability of the synthetic tidal parameters have been estimated by comparing observed gravity and vertical-displacement tide parameters with those interpolated from our synthetic model, which shows good agreement. Tests also indicate that the synthetic tide parameters provide realistic gravimetric and displacements for practical use in tidal prediction. Numéro de notice : A2005-369 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-005-0460-3 En ligne : https://doi.org/10.1007/s00190-005-0460-3 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27505 [article]

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