RECOSOM
Type | Oceanographic cruise |
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Set | This cruise is part of the set RECOSOM |
Ship | Thalia |
Ship owner | Ifremer |
Dates | 15/03/2010 - 25/04/2010 |
Chief scientist(s) | LE BOT Sophie , TRENTESAUX Alain , SIMPLET Laure |
M2C - MORPHODYNAMIQUE CONTINENTALE ET CÔTIÈRE - UMR 6143 Université de Rouen Normandie Place Emile Blondel 76821 MONT SAINT AIGNAN Cedex +33 (0)2 32 76 94 46 https://recherche.univ-rouen.fr/m2c-morphodynamique-continentale-et-cotiere-umr-6143-629712.kjsp |
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DOI | 10.17600/10070070 |
Objective | The cruise aimed to survey the soft sediment cover of the seabed in the Bay of Somme in order to: 1) establish a map of the seafloors in the bay (sidescan sonar) which could thus connect the surveys made in the Nord Pas-de-Calais (Dover straits) (Granor project in 1984, 1985) (to the North of the zone) and offshore from Dieppe (four-year study of the nuclear power plant at Penly) and surveys by SHOM and the University of Rouen (to the South of the zone); 2) describe in detail the ending and beginning points of the large banks in Nord Pas-de-Calais, which are the subject of a PhD thesis at University of Rouen; 3) understand the processes of infilling of estuaries in Picardy as well as the modalities of sediment transfer between the coast and the platform (the ESTUNORD09 cruise requested aboard the launch Haliotis providing additional information on these aspects for the fringe very close to the coast); 4) plot the paleo-courses of the rivers Somme, Authie and Canche, as well as the nature and architecture of the units which make up their filling. The cruise had 3 legs: LEG1 (head scientist Sophie Le Bot): from 16 March 2010 (Dieppe) to 20 March 2010 (Dieppe), LEG2 (head scientist Alain Tresentaux): from 22 March 2010 (Boulogne-sur-Mer) to 26 March 2010 (Boulogne-sur-Mer) and LEG3 (head scientist Laure Simplet): from 29 March 2010 (Boulogne-sur-Mer) to 25 April 2010 (Dieppe). The cruise falls under the following projects: P4 of Ifremer Reconnaissance and characterisation of shelf, TRANSEDMANCHE-EST (sedimentary transfers in the Eastern Channel) and PLAMAR (for PLAges à MARées). |