Détail de l'auteur
Auteur david Booker |
Documents disponibles écrits par cet auteur (1)
Ajouter le résultat dans votre panier Affiner la recherche Interroger des sources externes
Secular changes in Earth’s shape and surface mass loading derived from combinations of reprocessed global GPS networks / david Booker in Journal of geodesy, vol 88 n° 9 (September 2014)
[article]
Titre : Secular changes in Earth’s shape and surface mass loading derived from combinations of reprocessed global GPS networks Type de document : Article/Communication Auteurs : david Booker, Auteur ; Peter J. Clarke, Auteur ; David Lavallée, Auteur Année de publication : 2014 Article en page(s) : pp 839 - 855 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] croute terrestre
[Termes IGN] détection de changement
[Termes IGN] masse d'eau
[Termes IGN] masse de la Terre
[Termes IGN] traitement de données GNSSRésumé : (Auteur) The changing distribution of surface mass (oceans, atmospheric pressure, continental water storage, groundwater, lakes, snow and ice) causes detectable changes in the shape of the solid Earth, on time scales ranging from hours to millennia. Transient changes in the Earth’s shape can, regardless of cause, be readily separated from steady secular variation in surface mass loading, but other secular changes due to plate tectonics and glacial isostatic adjustment (GIA) cannot. We estimate secular station velocities from almost 11 years of high quality combined GPS position solutions (GPS weeks 1,000–1,570) submitted as part of the first international global navigation satellite system service reprocessing campaign. Individual station velocities are estimated as a linear fit, paying careful attention to outliers and offsets. We remove a suite of a priori GIA models, each with an associated set of plate tectonic Euler vectors estimated by us; the latter are shown to be insensitive to the a priori GIA model. From the coordinate time series residuals after removing the GIA models and corresponding plate tectonic velocities, we use mass-conserving continental basis functions to estimate surface mass loading including the secular term. The different GIA models lead to significant differences in the estimates of loading in selected regions. Although our loading estimates are broadly comparable with independent estimates from other satellite missions, their range highlights the need for better, more robust GIA models that incorporate 3D Earth structure and accurately represent 3D surface displacements. Numéro de notice : A2014-455 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-014-0725-9 Date de publication en ligne : 06/05/2014 En ligne : https://doi.org/10.1007/s00190-014-0725-9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74027
in Journal of geodesy > vol 88 n° 9 (September 2014) . - pp 839 - 855[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 266-2014091 SL Revue Centre de documentation Revues en salle Disponible