Vis enkel innførsel

dc.contributor.authorNordam, Tor
dc.contributor.authorKristiansen, Ruben
dc.contributor.authorNepstad, Raymond
dc.contributor.authorRöhrs, Johannes
dc.date.accessioned2019-05-24T13:06:05Z
dc.date.available2019-05-24T13:06:05Z
dc.date.created2019-05-22T14:09:15Z
dc.date.issued2019-04
dc.identifier.citationOcean Modelling. 2019, 136 107-119.nb_NO
dc.identifier.issn1463-5003
dc.identifier.urihttp://hdl.handle.net/11250/2598693
dc.description.abstractLagrangian particle models are used for many applications in the ocean sciences, including transport modelling of oil spills, fish eggs and larvae, plastics, and sediment particles. In the context of oil spill modelling, there are numerous papers discussing entrainment of surface oil by breaking waves. However, for the opposite process, i.e., droplets reaching the surface and joining the surface slick, we have found no discussion in the literature of the exact steps involved. Given the wide use of particle-based models in oil spill modelling, it is important to establish a consistent recipe for treating the surface boundary. We investigate a Lagrangian particle model for the vertical transport, surfacing and resuspension of buoyant material in the water column. By modifying the behaviour at the surface boundary, the model can be applied to materials such as oil droplets, that form a surface slick, and hence see the surface as an absorbing boundary, and to particles that do not form a surface slick, such as fish eggs and microplastics. For slick-forming materials, we also consider resuspension from the surface slick, (e.g., entrainment of surface oil by breaking waves). While we restrict our attention to positively buoyant materials, the model is equally applicable to the settling of negatively buoyant particles, such as sediment grains and marine snow. We consider three case studies, each designed to allow a detailed and direct comparison of the Lagrangian model to an Eulerian model based on numerical solution of the advection-diffusion-reaction equation. We demonstrate that the two models give the same results when the boundary at the surface is treated correctly.nb_NO
dc.description.abstractNumerical analysis of boundary conditions in a Lagrangian particle model for vertical mixing, transport and surfacing of buoyant particles in the water columnnb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectOil spillsnb_NO
dc.subjectFish eggsnb_NO
dc.subjectMicroplasticsnb_NO
dc.subjectVertical mixingnb_NO
dc.subjectRandom walknb_NO
dc.titleNumerical analysis of boundary conditions in a Lagrangian particle model for vertical mixing, transport and surfacing of buoyant particles in the water columnnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber107-119nb_NO
dc.source.volume136nb_NO
dc.source.journalOcean Modellingnb_NO
dc.identifier.doi10.1016/j.ocemod.2019.03.003
dc.identifier.cristin1699524
cristin.unitcode7566,6,0,0
cristin.unitnameMiljø og nye ressurser
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Navngivelse 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Navngivelse 4.0 Internasjonal