English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/133464
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Boundaries of the Peruvian oxygen minimum zone shaped by coherent mesoscale dynamics

AuthorsBettencourt, João H.; López, Cristóbal ; Hernández-García, Emilio ; Montes, Ivonne; Sudre, Joel; Dewitte, Boris; Paulmier, Aurélien; Garçon, Véronique
Issue Date2-Nov-2015
PublisherNature Publishing Group
CitationNature Geoscience 8: 937-940 (2015)
AbstractDissolved oxygen in sea water affects marine habitats and biogeochemical cycles. Oceanic zones with oxygen deficits represent 7% of the volume and 8% of the area of the oceans, and are thought to be expanding. One of the most pronounced lies in the region off Peru, where mesoscale activity in the form of fronts and eddies is strong. Here, we study the dynamics of the Peruvian oxygen minimum zone in a Lagrangian framework, using a coupled physical-biogeochemical numerical model and finite-size Lyapunov exponent fields, to evaluate the role of mesoscale activity. We find that, at depths between 380 and 600 m, mesoscale structures have two distinct roles. First, their mean positions and paths delimit and maintain the oxygen minimum zone boundaries. Second, their high-frequency fluctuations inject oxygen across the oxygen minimum zone boundaries and eddy fluxes are one order of magnitude higher than mean oxygen fluxes. We conclude that these eddy fluxes contribute to the ventilation of the Peruvian oxygen minimum zone.
Publisher version (URL)http://dx.doi.org/10.1038/ngeo2570
URIhttp://hdl.handle.net/10261/133464
DOI10.1038/ngeo2570
Identifierse-issn: 1752-0908
issn: 1752-0894
Appears in Collections:(IFISC) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.