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dc.contributor.authorHøgsbro Thygesen, Uffe
dc.contributor.authorÅdlandsvik, Bjørn
dc.date.accessioned2007-10-25T08:41:07Z
dc.date.issued2007-10-11
dc.identifier.issn1616-1599
dc.identifier.issn0171-8630
dc.identifier.urihttp://hdl.handle.net/11250/108239
dc.description.abstractEarly life stages in fish are often modeled by individual-based models. The transport of individuals with ocean currents is addressed through particle-tracking techniques, which typically simulate vertical turbulent dispersal with random walk schemes. These schemes, however, perform poorly when the eddy diffusivity displays steep gradients, as in stratified water columns, and near the surface and sea floor. In the present paper, we advocate the use of a binned random walk, which keeps track, not of the exact vertical position of a tracer particle, but only of the layer in which the particle resides. The binned random walk is derived by discretizing the Eulerian equations governing the vertical dispersal with the finite-volume method. The scheme is easily implemented, even when layers are non-uniform and turbulence statistics originate from a circulation model, and, by construction, always satisfies the well-mixed criterion. We demonstrate the scheme and discuss its applicability.en
dc.format.extent205967 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoengen
dc.publisherInter-Researchen
dc.titleSimulating vertical turbulent dispersal with finite volumes and binned random walksen
dc.typeJournal articleen
dc.typePeer reviewed
dc.source.pagenumber145-53en
dc.source.volume347en
dc.source.journalMarine Ecology Progress Seriesen
dc.identifier.doi10.3354/meps06975


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