Centre de documentation
scientifique

Dépouillements

The quest for a consistent signal in ground and GRACE gravity time-series / Michel Van Camp in Geophysical journal international, vol 197 n° 1 (April 2014)  

Public [article]  inGeophysical journal international > vol 197 n° 1 (April 2014) . - pp 192 - 201 Titre : The quest for a consistent signal in ground and GRACE gravity time-series Type de document : Article/Communication Auteurs : Michel Van Camp, Auteur ; Olivier de Viron, Auteur ; Laurent Métivier , Auteur ; Bruno Meurers, Auteur Année de publication : 2014 Article en page(s) : pp 192 - 201 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] données GRACE [Termes IGN] Europe centrale [Termes IGN] gravimètre supraconducteur [Termes IGN] levé gravimétrique [Termes IGN] série temporelle [Termes IGN] variation saisonnière Résumé : (auteur) Recent studies show that terrestrial and space-based observations of gravity agree over Europe. In this paper, we compare time-series of terrestrial gravity (including the contribution due to surface displacement) as measured by superconducting gravimeters (SGs), space-based observations from Gravity Recovery and Climate Experiment (GRACE) and predicted changes in gravity derived from two global hydrological models at 10 SG stations in central Europe. Despite the fact that all observations and models observe a maximum in the same season due to water storage changes, there is little agreement between the SG time-series even when they are separated by distances smaller than the spatial resolution of GRACE. We also demonstrate that GRACE and the SG observations and the water storage models do not display significant correlation at seasonal periods nor at interannual periods. These findings are consistent with the fact that the SGs are sensitive primarily to mass changes in the few hundred metres surrounding the station. Numéro de notice : A2014-784 Affiliation des auteurs : LASTIG LAREG+Ext (2012-mi2018) Autre URL associée : URL article Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1093/gji/ggt524 Date de publication en ligne : 29/01/2014 En ligne : https://hal.science/hal-01087241/ Format de la ressource électronique : URL article HAL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78598 [article]

Voir aussi

• Reply to the Comment on: 'The quest for a consistent signal in ground and GRACE gravity time series' / Michel Van Camp in Geophysical journal international, vol 199 n° 3 (December 2014)