Show simple item record

dc.contributor.authorRennie, Susan
dc.contributor.authorPattiaratchi, C.
dc.contributor.authorMcCauley, Robert
dc.identifier.citationRennie, Susan J. and Pattiaratchi, Charitha B. and McCauley, Robert D. 2009. Numerical simulation of the circulation within the Perth Submarine Canyon, Western Australia. Continental Shelf Research. 29 (16): pp. 2020-2036.

Surface and sub-surface currents along the ocean boundary of Western Australia were simulated using Regional Ocean Modelling System (ROMS) to examine the circulation within the Perth Canyon. Two major current systems influenced the circulation within the canyon: (1) The Leeuwin current interacted weakly with the canyon as the majority of the canyon was below the depth of the Leeuwin current and (2) Leeuwin undercurrent interacted strongly with the canyon, forming eddies within the canyon at depths of 400-800 m. The results indicated that within the canyon, the current patterns changed continuously although there were some repeated patterns. Recurrent eddies produced regions where upwelling or downwelling dominated during the model runs. Deep upwelling was stronger within the canyon than elsewhere on the shelf, but vertical transport in the upper ocean was strong everywhere when wind forcing was applied. Upwelling alone appeared to be insufficient to transport nutrients to the euphotic zone because the canyon rims were deep. Increased upwelling, combined with entrapment within eddies and strong upwelling-favourable winds, which could assist mixing, may account for the high productivity attributed to the canyon. The Leeuwin current is otherwise a strong barrier to the upwelling of nutrients.

dc.subjectEquatorial undercurrents
dc.subjectEastern boundary currents
dc.subjectLeeuwin current
dc.subjectLeeuwin undercurrent
dc.subjectSubmarine canyons
dc.subjectShelf dynamics
dc.titleNumerical simulation of the circulation within the Perth Submarine Canyon, Western Australia
dc.typeJournal Article
dcterms.source.titleContinental Shelf Research

The link to the journal’s home page is Copyright © 2009 Elsevier B.V. All rights reserved

curtin.departmentCentre for Marine Science & Technology (COE)
curtin.accessStatusFulltext not available
curtin.facultyCentre for Marine Science and Technology (CMST)
curtin.facultyFaculty of Science and Engineering

Files in this item


This item appears in the following Collection(s)

Show simple item record