Multi-technique monitoring of ocean tide loading in northern France

M. Llubes; Nicolas Florsch; J.-P. Boy; M. Amalvict; P. Bonnefond; M. N. Bouin; S. Durand; M.-F. Esnoult; P. Exertier; J. Hinderer; M.-F. Lalancette; F. Masson; L. Morel; Jean-Marie Nicolas; Mathilde Vergnolle; G. Wöppelmann

doi:10.1016/j.crte.2008.03.005

Journal articles

Multi-technique monitoring of ocean tide loading in northern France

M. Llubes ¹ Nicolas Florsch ² J.-P. Boy ³ M. Amalvict ³ P. Bonnefond ⁴ M. N. Bouin ⁵ S. Durand ⁶ M.-F. Esnoult ⁷ P. Exertier ⁴ J. Hinderer ³ M.-F. Lalancette ⁸ F. Masson ⁹ L. Morel ⁶ Jean-Marie Nicolas ⁶ Mathilde Vergnolle ¹⁰ G. Wöppelmann ¹¹

1 LEGOS - Laboratoire d'études en Géophysique et océanographie spatiales

2 SISYPHE - Structure et fonctionnement des systèmes hydriques continentaux

3 IPGS - Institut de physique du globe de Strasbourg

4 LG - Laboratoire Gemini

5 LAREG - LAboratoire de Recherche en Géodésie

6 GeF - Laboratoire Géomatique et foncier

7 DS (UMR_7580) - Département de sismologie

8 Etablissement Principal du Service Hydrographique et Océanographique de la Marine à Brest (EPSHOM) – Brest, section Géodésie–Géophysique

9 ISTEEM - Institut des Sciences de la Terre, de l'Environnement et de l'Espace de Montpellier

10 LGIT - Laboratoire de Géophysique Interne et Tectonophysique

11 CLDG - Centre littoral de géophysique

Abstract : 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.

keyword : Tiltmeter Satellite Laser Ranging Ocean tide loading GPS Gravimeter

Document type :

Journal articles

Domain :

Sciences of the Universe [physics]

Complete list of metadatas

https://hal-insu.archives-ouvertes.fr/insu-00352759
Contributor : Pascale Talour <>
Submitted on : Tuesday, January 13, 2009 - 4:37:54 PM
Last modification on : Thursday, October 15, 2020 - 3:18:09 AM

Multi-technique monitoring of ocean tide loading in northern France

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Multi-technique monitoring of ocean tide loading in northern France

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