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Auteur C. Calvert |
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Ajouter le résultat dans votre panier Affiner la recherche Interroger des sources externesConnection of French and British levelling networks : application to UELN / Paul Rebischung (01/12/2009)
contenu dans Report on the Symposium of the IAG Subcommission 1.3A Europe (EUREF) held in London 6-9 June 2007 & reports of the EUREF technical working group (TWG), EUREF publication n° 17 / Joao Agria Torres (2009)
Titre : Connection of French and British levelling networks : application to UELN Type de document : Article/Communication Auteurs : Paul Rebischung Editeur : Francfort sur le Main : Bundesamt für Kartographie und Geodäsie Année de publication : 01/12/2009 Conférence : EUREF 2007, Symposium of the IAG sub-commission 1.3A Europe 06/06/2007 09/06/2007 Londres Royaume-Uni OA proceedings Importance : pp 63 - 68 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] France (administrative)
[Termes IGN] Institut géographique national (France)
[Termes IGN] Ordnance Survey (UK)
[Termes IGN] réseau européen unifié de nivellement
[Termes IGN] réseau géodésique
[Termes IGN] Royaume-Uni
[Termes IGN] tunnel sous la MancheRésumé : (Auteur) The proposal to join the levelling networks of France and United Kingdom through the Channel Tunnel arose in January 1991. After three years of negotiations between Eurotunnel, the Ordnance Survey (OS) and the Institut Géographique National (IGN), the survey was eventually carried out in February 1994 by a British team and a French one. First computations were then made and a disagreement was already noticed between both levellings, but this issue was left dormant.
Because of the insistent demand of UELN for a precise link between Great-Britain and the continent, the Channel Tunnel levelling case was reopened last year. A new computation of the French levelling data was made, confirming an inexplicable disagreement between both levellings. Investigations were carried out in order to find reasons for this discrepancy; but to no avail.
A meeting was then held in Paris in January 2007 where a pragmatic, rather than wholly satisfactory agreement was found. The linking of each tunnel portal with a nearby UELN point was also planned so that the tunnel levelling could be introduced into UELN.Numéro de notice : C2007-002 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : http://www.euref.eu/symposia/2007London/02-03-rebischung.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65033
