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Modelling hydrodynamic impacts of sea-level rise on wave-dominated Australian estuaries with differing geomorphology

Kumbier, Kristian, Carvalho, Rafael C. and Woodroffe, Colin D. 2018, Modelling hydrodynamic impacts of sea-level rise on wave-dominated Australian estuaries with differing geomorphology, Journal of marine science and engineering, vol. 6, no. 2, pp. 1-18, doi: 10.3390/jmse6020066.

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Title Modelling hydrodynamic impacts of sea-level rise on wave-dominated Australian estuaries with differing geomorphology
Author(s) Kumbier, Kristian
Carvalho, Rafael C.ORCID iD for Carvalho, Rafael C. orcid.org/0000-0003-0790-5614
Woodroffe, Colin D.
Journal name Journal of marine science and engineering
Volume number 6
Issue number 2
Article ID 66
Start page 1
End page 18
Total pages 18
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2018
ISSN 2077-1312
Keyword(s) Science & Technology
Physical Sciences
Oceanography
inundation
coastal flooding
estuarine geomorphology
hydrodynamic modelling
barrier estuary
Australia
SHOALHAVEN RIVER
COASTAL
TIDES
VULNERABILITY
SENSITIVITY
CLIMATE
INDEXES
Summary Sea-level rise (SLR) will affect the hydrodynamics and flooding characteristics of estuaries which are a function of the geomorphology of particular estuarine systems. This study presents a numerical modelling of coastal flooding due to drivers such as spring-tides, storm surges and river inflows and examines how these will change under sea-level increases of 0.4 m and 0.9 m for two estuaries that are at different geomorphological evolutionary stages of infill. Our results demonstrate that estuarine response to SLR varies between different types of estuaries, and detailed modelling is necessary to understand the nature and extent of inundation in response to SLR. Comparison of modelling results indicates that floodplain elevation is fundamental in order to identify the most vulnerable systems and estimate how inundation extents and depths may change in the future. Floodplains in mature estuarine systems may drown and experience a considerable increase in inundation depths once a certain threshold in elevation has been exceeded. By contrast, immature estuarine systems may be subject to increases in relative inundation extent and substantial changes in hydrodynamics such as tidal range and current velocity. The unique nature of estuaries does not allow for generalisations; however, classifications of estuarine geomorphology could indicate how certain types of estuary may respond to SLR.
Language eng
DOI 10.3390/jmse6020066
Indigenous content off
HERDC Research category C1.1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30134994

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.