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dc.contributor.authorSennes, Gillesen_US
dc.contributor.authorCastelle, Brunoen_US
dc.contributor.authorBertin, X.en_US
dc.contributor.authorMirfenderesk, Hamiden_US
dc.contributor.authorTomlinson, Rodgeren_US
dc.contributor.editorCharles Lemckerten_US
dc.date.accessioned2017-04-24T09:08:30Z
dc.date.available2017-04-24T09:08:30Z
dc.date.issued2007en_US
dc.date.modified2009-09-07T23:32:07Z
dc.identifier.issn07490208en_US
dc.identifier.doihttp://www.griffith.edu.au/conference/ics2007/jcr.htmlen_AU
dc.identifier.urihttp://hdl.handle.net/10072/17986
dc.description.abstractThe Seaway entrance is a tidal inlet located on the Gold Coast (Queensland, Australia). Before the 80s, the entrance was highly variable in terms of inlet location and sand bar characteristics. The Seaway stabilisation with two training walls combined with an artificial sand bypassing system were completed in 1986 with the aims of fixing the entrance, maintaining a safe navigable channel, preventing shoreline erosion to the north and a buildup of sand to the south. Despite these training works, the dynamics of the Seaway is still poorly understood: channel infilling problems and navigation issues remain. For these reasons, the present study aims to develop a comprehensive model of the entrance to be used for further dredging and training work issues. The present investigation is carried out in two stages. The first stage is based on historic aerial photograph analysis of the Seaway before training works. It shows that the mouth was periodically driven northward by the longshore drift, with an average cycle time of 10 years. The second stage is based on numerical modelling after training works. Refined Delft3D modelling is undertaken with a 2DH approach on the Seaway area, taking into account the training walls and the sand bypassing system. This local model is coupled with MIKE21 implemented on a regional scale to provide accurate tide and flow forcing at the boundaries. After calibration, the analysis of flow patterns shows that the Gold Coast Seaway is ebb-dominated and that the more intense flow velocities are observed in the northern channel. Morphological evolution of the inlet is also investigated with a qualitative approach. Results indicate the pathways and rate of the sand movement within the tidal inlet in its current configuration and provide information about a planned 400 m extension of the southern training wall. A significant calibration work, involving sediment transport and bathymetry measurement, is required for the model to be used as a comprehensive tool for further dredging and dumping strategies within the entrance.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent25763 bytes
dc.format.extent1497027 bytes
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherCoastal Education and Research foundation, Inc.en_US
dc.publisher.placeUnited Statesen_US
dc.publisher.urihttp://www.cerf-jcr.org/en_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom1086en_US
dc.relation.ispartofpageto1091en_US
dc.relation.ispartofissue50en_US
dc.relation.ispartofjournalJournal of Coastal Researchen_US
dc.relation.ispartofvolumeSIen_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode291101en_US
dc.titleModelling of the Gold Coast Seaway tidal inlet, Australiaen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.rights.copyrightCopyright 2007 Coastal Education and Research Foundation Inc (CERF). Please refer to the journal's website for access to the definitive, published version.en_AU
gro.date.issued2007
gro.hasfulltextFull Text


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