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The stability of tide gauges in the south Pacific determined from multiepoch geodetic levelling, 1992 to 2010 / Manoj Nilesh Deo in Marine geodesy, vol 36 n° 3 (September - November 2013)  

Public [article]  inMarine geodesy > vol 36 n° 3 (September - November 2013) . - pp 261 - 284 Titre : The stability of tide gauges in the south Pacific determined from multiepoch geodetic levelling, 1992 to 2010 Type de document : Article/Communication Auteurs : Manoj Nilesh Deo, Auteur ; Ramesh Govind, Auteur ; Ahmed El-Mowafy, Auteur Année de publication : 2013 Article en page(s) : pp 261 - 284 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse diachronique [Termes IGN] Cook (îles) [Termes IGN] données marégraphiques [Termes IGN] marée océanique [Termes IGN] niveau moyen des mers [Termes IGN] nivellement par GPS [Termes IGN] Pacifique Sud [Termes IGN] repère de nivellement [Termes IGN] Salomon (îles) [Termes IGN] test de performance [Termes IGN] Vanuatu [Vedettes matières IGN] Altimétrie Résumé : (Auteur) Tide gauge data is important for determining global or local sea level rise with respect to a global geocentric reference frame. Data from repeated precise levelling connections between the tide gauges and a series of coastal and inland benchmarks, including Continuous GPS (CGPS) benchmarks, are used to determine the stability of tide gauges at 12 locations in the South Pacific. The method for determining this stability is based on a constant velocity model which minimises the net movement amongst a set of datum benchmarks surveyed since the installation of the tide gauges. When assessed at a 95% confidence interval, and with the exception of the Solomon Islands, none of the tide gauges were found to be in motion relative to their CGPS benchmarks. The Solomon Islands estimate is considered to be unreliable since the CGPS benchmark was recently established and has been surveyed fewer than three times. In Tonga and Cook Islands, the tide gauges were found to be disturbed or affected by survey errors whereas the Vanuatu results were affected by earthquakes. Numéro de notice : A2013-711 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1080/01490419.2013.786003 Date de publication en ligne : 18/03/2016 En ligne : https://doi.org/10.1080/01490419.2013.786003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32847 [article]

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