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dc.contributor.authorMenze, Sebastian
dc.contributor.authorIngvaldsen, Randi Brunvær
dc.contributor.authorNikolopoulos, Anna
dc.contributor.authorHattermann, Tore
dc.contributor.authorAlbretsen, Jon
dc.contributor.authorGjøsæter, Harald
dc.date.accessioned2020-11-30T13:03:23Z
dc.date.available2020-11-30T13:03:23Z
dc.date.issued2020-09-30
dc.description.abstractAtlantic Water (AW) flowing along the western and northern Svalbard shelf-break extends the Atlantic domain into the Arctic and is the region’s major source of heat, nutrients and advected plankton. We investigated the inflow and recirculation of AW into four major troughs that cut into the Svalbard shelf, the Isfjorden, Kongsfjorden, Hinlopen and Kvitøya Troughs, and related the circulation patterns to acoustic backscatter observed with echosounders and Acoustic Doppler Current Profilers. The acoustic observations showed higher levels of backscatter from fish in the Hinlopen Trough compared to the shelf and shelf-break north of Svalbard. This coincides with a steady inflow of nutrients, biomass and heat into the trough with the AW. Trough circulation was characterized using output from a high-resolution regional ocean model and particle tracking simulations. All four troughs experience topographically steered recirculation (in-and-outflow) of AW, but the troughs on the western Svalbard shelf showed a stronger seasonality than the troughs on the northern shelf. The Hinlopen Trough receives the strongest AW inflow and the most direct inflow from the shelf-break boundary current. The troughs form hybrid habitats between the shelf and shelf-break that extend the Atlantic advective domain closer to the Svalbard coastline.en_US
dc.identifier.citationMenze, Ingvaldsen R, Nikolopoulos A, Hattermann, Albretsen, Gjøsæter. Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf. Progress in Oceanography. 2020;188en_US
dc.identifier.cristinIDFRIDAID 1842484
dc.identifier.doi10.1016/j.pocean.2020.102447
dc.identifier.issn0079-6611
dc.identifier.issn1873-4472
dc.identifier.urihttps://hdl.handle.net/10037/19937
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalProgress in Oceanography
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SIPHINIFES/228896/Norway/The Arctic Ocean Ecosystem - Polhavets økosystem//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430en_US
dc.titleProductive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelfen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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