Transient redox species as tracers of oceanographic mixing and transport.

Croot, Peter, Baars, Oliver, Bluhm, Katrin, Dammshäuser, Anna, Heller, Maija, Schlosser, Christian , Streu, Peter and Wuttig, Kathrin (2011) Transient redox species as tracers of oceanographic mixing and transport. [Talk] In: 43th International Liège Colloquium on Ocean Dynamics Tracers of physical and biogeochemical processes, past changes and ongoing anthropogenic impacts. , 02.-06.05.2011, Liege, Belgium .

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Abstract

A number of redox species have the potential to be used as tracers of ocean mixing over different time scales (minutes to decades) related to the kinetics of their oxidation or reduction. A prime example of this is from the Peruvian Oxygen Minimum Zone, where recent work as part of SFB754 (Climate-Biogeochemistry Interactions in the Tropical Ocean)
at the IFM-GEOMAR has shown the role that different mixing environments(upwelling, mixed layer turnover, eddy induced mixing) covering a range of time scales(hours to days)
have on Fe(II), H2O2 and Iodide profiles in the water column. On longer time scales (years) results from the Southern Ocean, during a GEOTRACES IPY expedition, suggests iodide has potential as a tracer for recently formed Antarctic deep water. This presentation will examine a suite of easily measureable redox tracers and illustrate their potential applications to different ocean mixing scenarios.

Document Type: Conference or Workshop Item (Talk)
Keywords: Marine chemistry
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BI Biological Oceanography
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
Date Deposited: 02 Nov 2011 08:19
Last Modified: 12 Oct 2012 12:18
URI: http://oceanrep.geomar.de/id/eprint/12449

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