Data/hora: 11/06/2024 10:59:34

Provedor de dados: | 5
País: | France
Título: | Hydrologie du Grand Etang de Miquelon : estimation des flux. Rapport annuel 2014
Autores: | Le Moine, Olivier; Geairon, Philippe; Robert, Stephane; Goraguer, Herle; Goulletquer, Philippe.
Data: | 2015-03
Ano: | 2015
Palavras-chave: | Flux hydrologiques; Courantométrie; Bathymétrie; Grand Etang Miquelon; Hydrological fluxes; Currentmeter data acquisition; Bathymétry; Grand Etang Miquelon.
Resumo: | This study aims to assess the hydrological fluxes between the ‘Grand Etang’ of Miquelon and the oceanic part. Bathymetric surveys and Doppler currentmeter data acquisitions were carried out from August 14th, 2014 to November 5th, 2014 to allow the following estimates : Total area (227 Ha) and characteristics volumes (total : 7,1x106 m3; oscillating 42,8x106 m3 (40 %); half-tide 5,2 106 m3) Velocity Index of channel to evaluate the average current speed at cross-section channel Fluxes, on flood and ebb tide respectively :  - Instantaneous flow : maxima at 85,3 and 65,3 m3/s ; mean 34,2 and 26,4 m3/s. - Circulating fluxes by tide : maxima 0,96 and 1 x106 m3, mean : 0,28 and 0,41 m3 - Mean renewal : 10,7% each tide. Tidal asymetry duration was reported: flood time was lower than the ebb one (4,9 h. vs 7,4 h.), which results in outflow fluxes significantly greater than inflow through the channel. Hypothesis of secondary inflow by percolation from ocean is formulated.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00256/36692/35304.pdf

http://archimer.ifremer.fr/doc/00256/36692/

Formato: | application/pdf

Fonte:

2015 Ifremer

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