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Eastern Tropical Atlantic Mixed Layer Depth: Assessment of Methods from In Situ Profiles in the Gulf of Guinea from Coastal to High Sea ArchiMer
N’guessan, Benjamin Kouadio; Kouassi, Aka Marcel; Trokourey, Albert; Toualy, Elisée; Kanga, Desiré Kouamé; Brehmer, Patrice.
To assess the eastern Atlantic tropical mixed layer depth (MLD) at 4°W in the Gulf of Guinea, water temperature and density profiles from over five hundred historical observational Conductivity – Temperature - Depth (CTD) data were used. These data, obtained from key oceanographic survey databases covering 60 years (1956 to 2016) were used for a numerical and visual determination of the MLD. The numerical approach consists of the use of the algorithms of three methods; while the visual estimation of the MLD were made on both temperature and density profiles. The numerical approaches were evaluated by comparing their results on the determination of tropical MLD with those of the visual inspections by means of statistical and graphical analysis in order to...
Tipo: Text Palavras-chave: Mixed layer depth; Gulf of Guinea; Atlantic Ocean; Density; Temperature.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00599/71115/75615.pdf
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Incidences de la modification de la circulation des eaux sur l'hydrochimie et le degré de contamination bactérienne d'un estuaire eutrophe tropical OceanDocs
Guiral, Daniel; Kouassi, Aka Marcel; Arfi, Robert.
Pour contrôler la prolifération de la végétation aquatique flottante, en Côte d'Ivoire, une ouverture dans le cordon littoral a été pratiquée en septembre 1987 mettant ainsi en communication directe le fleuve Comoé avec l'océan. L'impact de cet aménagement sur l'hydrochimie (salinité, éléments nutritifs et biomasse chlorophyllienne)et le degré de contamination bactérienne a été étudié dans la zone proche du canal de Vridi. Avant la réouverture du grau de Bassam, les eaux du Comoé s'évacuaient dans l'océan par ce canal artificiel situé dans la ville d'Abidjan. L'étude comparative de deux cycles annuels en quatre stations avant (1985) et après (1987/88)l'ouverture du grau de Bassam (Analyses en Composantes Principales(ACP))est discutée en fonction des...
Tipo: Journal Contribution Palavras-chave: Microbial contamination; Estuarine circulation.
Ano: 1991 URL: http://hdl.handle.net/1834/5259
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