Data/hora: 27/07/2024 02:02:48

Provedor de dados: 	5	
País: 	France	
Título: 	New insights into the transport processes controlling the sulfate-methane-transition-zone near methane vents	
Autores: 	Sultan, Nabil; Garziglia, Sebastien; Ruffine, Livio.	
Data: 	2016-05	
Ano: 	2016	
Resumo: 	Over the past years, several studies have raised concerns about the possible interactions between methane hydrate decomposition and external change. To carry out such an investigation, it is essential to characterize the baseline dynamics of gas hydrate systems related to natural geological and sedimentary processes. This is usually treated through the analysis of sulfate-reduction coupled to anaerobic oxidation of methane (AOM). Here, we model sulfate reduction coupled with AOM as a two-dimensional (2D) problem including, advective and diffusive transport. This is applied to a case study from a deep-water site off Nigeria’s coast where lateral methane advection through turbidite layers was suspected. We show by analyzing the acquired data in combination with computational modeling that a two-dimensional approach is able to accurately describe the recent past dynamics of such a complex natural system. Our results show that the sulfate-methane-transition-zone (SMTZ) is not a vertical barrier for dissolved sulfate and methane. We also show that such a modeling is able to assess short timescale variations in the order of decades to centuries.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00339/45068/44493.pdf

DOI:10.1038/srep26701

http://archimer.ifremer.fr/doc/00339/45068/	
Editor: 	Nature Publishing Group	
Formato: 	application/pdf	
Fonte: 	Scientific Reports (2045-2322) (Nature Publishing Group), 2016-05 , Vol. 6 , P. -	
Fonte: 	This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

info:eu-repo/semantics/openAccess

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