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Multi-technique monitoring of ocean tide loading in Northern France / Muriel Llubes in Comptes rendus : Géoscience, vol 340 n° 6 (June 2010)  

Public [article]  inComptes rendus : Géoscience > vol 340 n° 6 (June 2010) . - pp 379 - 389 Titre : Multi-technique monitoring of ocean tide loading in Northern France Titre original : Campagne multi-technique d’étude de la charge océanique dans le Nord de la France Type de document : Article/Communication Auteurs : Muriel Llubes, Auteur ; Nicolas Florsch, Auteur ; Jean-Paul Boy, Auteur ; Martine Amalvict, Auteur ; Pascal Bonnefond, Auteur ; Marie-Noëlle Bouin , Auteur ; et al., Auteur Année de publication : 2008 Article en page(s) : pp 379 - 389 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] données GPS [Termes IGN] surcharge océanique Résumé : (auteur) We have organised afield study of ocean tide loading in the northwestern part of France, where tidal amplitudes are known to be among the highest in the world. GPS and gravimetric techniques have already proved their capability to measure such weak and high-frequency signals. In this study, these classical observations are complemented with less usual techniques, such as tiltmeter and Satellite Laser Ranging (SLR) measurements. We present here the preliminary results for a common period of observations spanning from 12–19 May 2004. Additional measurements from the French Transportable Laser Ranging Station (FTLRS) were available during September and October 2004. Observation residuals are computed as the difference between the observed and the predicted time signals. We obtain small RMS residuals for GPS measurements (2.5/3.1/4.5 mm for the eastward, northward and upward components), for absolute and relative gravimetry (9 nm/s2 and 13 nm/s2) and for tiltmeters (0.05 μrad for EW component). We also fit the amplitude of the main M2 tidal constituent to FTLRS observations and we find a value of 3.731 cm, which is comparable to the theoretical value. Numéro de notice : A2010-699 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.crte.2008.03.005 Date de publication en ligne : 15/06/2008 En ligne : https://doi.org/10.1016/j.crte.2008.03.005 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103435 [article]