NDLI: Evolution d’une embouchure tidale en réponse au comblement de la baie associé : la baie de Marennes-Oléron et le Pertuis de Maumusson (Littoral Atlantique, France)

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Evolution d’une embouchure tidale en réponse au comblement de la baie associé : la baie de Marennes-Oléron et le Pertuis de Maumusson (Littoral Atlantique, France)

Content Provider	Semantic Scholar
Author	Bertin, Xavier Chaumillon, Éric Sottolichio, Aldo
Copyright Year	2004
Abstract	The study area is located in the middle of the Atlantic coast and include a tidal bay, Marennes-Oleron Bay, and its associated inlet, Maumusson Inlet. Accurate bathymetric data have permitted to evidence a filling in sediment of both the inlet and the tidal bay since 1824. Cross sectional areas, current measurements and hydrodynamic modelling have revealed a decrease in tidal prisms in the order of 40% since 1824 at Maumusson Inlet. This decrease has been attributed to the filling in sediment of the bay and to a subsequent decrease in tidal wave propagation. According to O’Briens law [9] [10], this tidal prism decrease has led to a strong shoaling at the inlet, the repercussions extended up to adjacent shorelines. Mots cles:Embouchure tidale, Prisme tidal, section mouillee, comblement sedimentaire. 1.Introduction: Depuis les dernieres decennies, l’importance economique et environnementale des systemes embouchures tidales/lagunes ne cesse de croitre [6]. La gestion de ces environnements fait face a de nouvelles preoccupations, comme le renouvellement en eau de la lagune pour l’aquaculture ou la stabilite des littoraux adjacents. Une bonne connaissance des relations entre les evolutions de la baie tidale et celles de l’embouchure apparait donc essentielle. Probablement en raison de la nouveaute de ces preoccupations et de la difficulte a quantifier les evolutions morphologiques qui affectent les hauts d’estran de la lagune, peu d’etudes quantitatives ont ete menees en ce sens.
Starting Page	149
Ending Page	155
Page Count	7
File Format	PDF HTM / HTML
DOI	10.5150/jngcgc.2004.017-B
Alternate Webpage(s)	http://www.paralia.fr/Files/08_17__7p__bertin.pdf
Alternate Webpage(s)	https://doi.org/10.5150/jngcgc.2004.017-B
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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