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dc.contributor.authorDa Silva, AP
dc.contributor.authorVieira da Silva, G
dc.contributor.authorMurray, T
dc.contributor.authorWishaw, D
dc.contributor.authorStrauss, D
dc.contributor.authorTomlinson, R
dc.date.accessioned2020-03-26T23:40:59Z
dc.date.available2020-03-26T23:40:59Z
dc.date.issued2019
dc.identifier.isbn9781925627237
dc.identifier.urihttp://hdl.handle.net/10072/392670
dc.description.abstractThis paper investigates the natural patterns of variability of the Noosa inlet estabilished after decades of adaptation to the new configuration of the river system resulted from man-made structures installed in the 1970-80's. Features such as the Northern Spit, Southern Spit, flood-tidal deltas, river channel and surrounding shorelines were mapped, measured and compared based on aerial images from recent years (2010-2018) in a Geographic Information System (GIS). The analysis revealed that Noosa River has currently fluctuated between two dominant patterns of inlet migration integrated with the Northern and Southern Spits development and meandering variability. With a fully-developed flood-tidal delta, Noosa River presents ~ 400,000 m2 of stable sand deposits, including some vegetated areas, towards the northern river bank. These formations and the Northern Spit have constrained the Northern Channel that became essentially inactive. In this configuration, Middle and Southern Channel have dominated the river's morhodynamics. Under a Middle Channel Dominance a quasi shore-parallel migration of the Northern Spit occurs, with the inlet throat migrating towards the training wall. This pattern presents relations to positive rainfall anomalies, mostly during strong La Niña years. The Southern Channel Dominance occurs when wave-dominated conditions favour the longshore sediment transport that builds up the Southern Spit and, consequently, pushes the inlet towards a northward orientation. As a response, the river meandering intensifies the currents that Erode Noosa Woods beach. This scenario was observed after a sequence of strong El Niño years. A broad understanding of the flood-tidal delta morphodynamics facing anthropogenic interventions and climate drivers was proven to be a fundamental tool for the management of the Noosa River and adjacent area.
dc.description.peerreviewedYes
dc.publisherEngineers Australia
dc.publisher.urihttps://search.informit.com.au/documentSummary;dn=800739011200812;res=IELENG
dc.relation.ispartofconferencenameAustralasian Coasts and Ports Conference 2019
dc.relation.ispartofconferencetitleAustralasian Coasts and Ports 2019 Conference: Future directions from 40°S and beyond
dc.relation.ispartofdatefrom2019-09-10
dc.relation.ispartofdateto2019-09-13
dc.relation.ispartoflocationHobart, Australia
dc.relation.ispartofpagefrom1038
dc.relation.ispartofpageto1044
dc.subject.fieldofresearchMaritime engineering
dc.subject.fieldofresearchcode4015
dc.titleInlet migration and flood-tidal delta morphodynamic evolution: Case study of Noosa - QLD, Australia
dc.typeConference output
dc.type.descriptionE1 - Conferences
dcterms.bibliographicCitationDa Silva, AP; Vieira da Silva, G; Murray, T; Wishaw, D; Strauss, D; Tomlinson, R, Inlet migration and flood-tidal delta morphodynamic evolution: Case study of Noosa - QLD, Australia, Australasian Coasts and Ports 2019 Conference: Future directions from 40°S and beyond, 2019, pp. 1038-1044
dc.date.updated2020-03-26T23:35:35Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2019. The attached file is reproduced here in accordance with the copyright policy of the publisher. For information about this conference please refer to the conference’s website or contact the author(s).
gro.hasfulltextFull Text
gro.griffith.authorTomlinson, Rodger B.
gro.griffith.authorStrauss, Darrell R.
gro.griffith.authorVieira da Silva, Guilherme
gro.griffith.authorMurray, Tom P.


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