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    Carbonate sediment dynamics and compartmentalisation of a highly modified coast: Geraldton, Western Australia

    Access Status
    Fulltext not available
    Authors
    Tecchiato, Sira
    Collins, L.
    Stevens, Alexandra
    Soldati, M.
    Pevzner, Roman
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Tecchiato, S. and Collins, L. and Stevens, A. and Soldati, M. and Pevzner, R. 2016. Carbonate sediment dynamics and compartmentalisation of a highly modified coast: Geraldton, Western Australia. Geomorphology. 254: pp. 57-72.
    Source Title
    Geomorphology
    DOI
    10.1016/j.geomorph.2015.11.014
    ISSN
    0169-555X
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/43339
    Collection
    • Curtin Research Publications
    Abstract

    © 2015 Elsevier B.V. The coastal zone off Geraldton in temperate Midwestern Australia was investigated to identify sediment dynamics and sediment budget components of two main embayments. An integrated analysis of hydrodynamics, geomorphology, sediments and habitat data was required to overcome a lack of previous examinations of sediment dynamics in the region. The seaward extent of the nearshore transport system was assessed. An improved understanding of coastal sediment dynamics and its relationship to coastal stability and assets was also achieved. The system is complex, with biogenic sediment input, as well as carbonate dune and river-derived sediments. Coastal erosion at Geraldton is mitigated by nourishment activities which require sand bypassing. Natural and artificial sediment sinks were identified, and are mainly located in the northern embayment where beach erosion is more significant. A dredged shipping channel needed to provide access to port facilities modifies the local sediment dynamics. This study provides new information for managing the Geraldton coast, which may be applicable to similar regions of Western Australia and carbonate coasts elsewhere.

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