Data/hora: 04/06/2024 06:24:47

Provedor de dados: 	5	
País: 	France	
Título: 	Nonstationary heat-transfer and interstitial solute diagenesis in disturbed sediments	
Autores: 	Michel, D; Caschetto, S.	
Data: 	1986-07	
Ano: 	1986	
Palavras-chave: 	Transfert de chaleur; Diagenèse de solutés; Sable marin côtier; Modèle mathématique; Méditerranée; Heat transfer; Solute diagenesis; Marine coastal sand; Mathematical model; Mediterranean.	
Resumo: 	The results of continuous temperature versus time measurements obtained simultaneously 7.0 cm below and 10 cm above the sediment/seawater interface in the proximity of the Revellata headland (Corsica, Mediterranean Sea) over a 6.5-day period are presented. The bottom of the 7 rn deep water column undergoes distinct thermal events of advective origin and a strong stirring owing to a weather alteration. Heat propagation in the sand 7.0 cm below the interface in a nonstationary state is described by means of a mathematical model based on the heat conduction equation and with the assumption that the heat is conservative. This description is achieved without any adjustment of the model to the data. Since the K. value characteristic of unconsolidated clastic sediments in undisturbed environments, i.e. 3.5 x 10- 3 cm2.s-l, is successfully used for this description, we suggest that overlying water stirring did not promote any appreciable increase of the heat transfer across the sandfseawater interface. This evidence could invalidate the previous hypothesis of an interstitial solute transfer increase owing to that kind of turbulent mixing. The analysis of the damping with depth and time of the thermal shock illustrates a model application that might constitute a physical reference frame for future studies of the extension of thermal stresses imposed on benthic burrowing organisms.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00110/22122/19758.pdf

http://archimer.ifremer.fr/doc/00110/22122/43115.pdf

http://archimer.ifremer.fr/doc/00110/22122/	
Editor: 	Gauthier-Villars	
Formato: 	application/pdf	
Fonte: 	Oceanologica Acta (0399-1784) (Gauthier-Villars), 1986-07 , Vol. 9 , N. 3 , P. 271-276	
Fonte: 	Gauthier-Villars

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