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Registros recuperados: 3
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Low salinity intrusions in the western English Channel ArchiMer
Kelly Gerreyn, B; Hydes, D; Jegou, Anne-marie; Lazure, Pascal; Fernand, L; Puillat, I; Garcia Soto, C.
Low salinity (< 35) surface waters (LSSW) at the southern entrance to the western English Channel (48.5 degrees N, 5.1 degrees W, near Ushant) were observed in late winter (March-April) in three successive years (2002-04) during near continuous ship of opportunity operations. The source of the LSSW is the northward spreading plumes from the Loire (47.5 degrees N, 2.5 degrees W) and Gironde (45.6 degrees N, 1.2 degrees W) along the French Atlantic coast. Fastest plume travel times were associated with northeasterly winds, consistent with Ekman theory. Differences between years in the mean winter (January-March) combined river discharges (D) was consistent with the minimum salinities (S-min) of the LSSW (2004: D = 4211 m(3) s(-1), S-min = 33.68; 2003: D =...
Tipo: Text Palavras-chave: Bay of Biscay; English Channel; River plume; Ferrybox; Low salinity.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-3524.pdf
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Modelling the Karenia mikimotoi bloom that occurred in the western English Channel during summer 2003 ArchiMer
Vanhoutte Brunier, Alice; Fernand, L; Menesguen, Alain; Lyons, S; Gohin, Francis; Cugier, Philippe.
Observations from space and in situ from the R.V Corystes 8/03 Cruise show that a massive Karenia mikimotoi bloom occured during summer 2003 in the western English Channel. Due to exceptional climatoligical conditions that occured in June 2003, the installation of a very strong thermocline enhanced the development of a massive bloom over 1 million cells 1(-1) in the Central English Channel. This paper presents the application of a mathematical model of this species, previously developed in for the Bay of Biscay, into a general 3D model of the primary production of the English Channel and southern Bight of the North Sea. Allelopathic interactions exerted by K. mikimotoi on other phytoplankton species and the role of agitation in the mortality of this...
Tipo: Text Palavras-chave: Western English Channel; SeaWiFS; Primary production; Karenia mikimotoi; 3D modelling; Coupled physical biogeochemical.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-3717.pdf
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The western Irish Sea gyre: A retention system for Norway lobster (Nephrops norvegicus)? ArchiMer
Hill, Ae; Brown, J; Fernand, L.
Recently a cyclonic, near-surface, gyre has been discovered above the deep (> 100 m) western basin of the Irish Sea. The gyre is present each year only during spring and summer (the surface heating season), and circulates around a static dome of-cold bottom water left beneath the thermocline after the previous winter. The mud substrate of the western Irish Sea is geographically isolated and is the habitat for adult Norway lobster (Nephrops norvegicus). In spring, newly hatched larvae are released into the water column, spending approximately 50 days in the plankton. Recruitment depends upon settlement of metamorphosed larvae onto the mud patch. Larval distributions show a strong correspondence to the field of stratification and it is probable that the...
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Ano: 1996 URL: http://archimer.ifremer.fr/doc/00094/20493/18162.pdf
Registros recuperados: 3
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