%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Arfi, Robert
%A Guiral, Daniel
%A Bouvy, Marc
%T Wind induced resuspension in a shallow tropical lagoon (GBR)
%D 1993
%L fdi:40368
%G ENG
%J Estuary, Coastal and Shelf Science
%@ 0272-7714
%K LAGUNE ; VENT ; CONSEQUENCE ECOLOGIQUE ; MATIERE EN SUSPENSION ; CONDUCTIVITE ; SEDIMENT ; GRANULOMETRIE ; PRODUCTIVITE BIOLOGIQUE
%K ALIZE ; HOULE
%K COTE D'IVOIRE
%K EBRIE LAGUNE ; LAYO STATION
%P 587-604
%R 10.1006/ecss.1993.1036
%U https://www.documentation.ird.fr/hor/fdi:40368
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_35-36/40368.pdf
%V 36
%W Horizon (IRD)
%X In shallow environments, particle resuspension can induce large ecological effects. Under some certain conditions of fetch, wind velocity, bathymetry and bed roughness, resuspension is generated by wind induced waves. During December 1991, a shallow station (1 m depth) in the north shore of a tropical lagoon (Côte d'Ivoire) was investigated in order to study the impact of wind induced resuspension on the ecosystem. In this area, Austral trade winds are dominant almost all year long, and their velocity shows a marked diel pattern. During the survey, three sequences were distinguished : a period of Austral trade winds (with possible resuspension), a period of Borela trade winds. Only Austral trade winds with a speed > 3 m s-1 allowed particle resuspension. For chlorophyll, mineral seston and ammonia, significantly higher values were noted during the windy sequences. Conductivity and water colour varied in relation to tides. Granulometric and mineralogical analyses showed that only the 0-3 cm superficial level of the sediment was involved in resuspension. (D'après résumé d'auteur)
%$ 032MILPHY