Surfzone-Beach-Dune interactions: Flow and Sediment Transport across the Intertidal Beach and Backshore

Patrick Hesp, Thomas Smyth

Research output: Contribution to journalConference article

8 Citations (Scopus)

Abstract

The original wave-beach-dune model (Hesp, 1982) stated that in the medium to long term, modal dissipative beaches display maximum onshore wave driven sediment transport, maximum aeolian transport off beaches, the largest foredune heights and volumes, and the largest Holocene dunefields. Modal reflective beaches display the opposite, while modal intermediate beaches display a trend in these from relatively high to relatively low sediment transport, foredune volumes, and Holocene barrier volumes with a trend from dissipative to reflective. New Computational Fluid Dynamic (CFD) modelling of flow and calculation of sediment transport over three modal beach types presented here shows that the original conceptual ideas and field data regarding aeolian sediment transport are correct. Dissipative beaches show the greatest long term potential for sediment delivery to the backshore whilst reflective beaches display the least, with a trend from relatively high to low in the intermediate beach state range.
LanguageEnglish
Pages8-12
Number of pages5
JournalJournal of Coastal Research
Issue numberSI 75
DOIs
Publication statusPublished - 2016
Externally publishedYes
Event14th International Coastal Symposium - Sydney, Australia
Duration: 6 Mar 201611 Mar 2016
https://www.jcronline.org/toc/coas/75

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sediment transport
dune
beach
Holocene
computational fluid dynamics
sediment
modeling
trend

Cite this

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title = "Surfzone-Beach-Dune interactions: Flow and Sediment Transport across the Intertidal Beach and Backshore",
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Surfzone-Beach-Dune interactions: Flow and Sediment Transport across the Intertidal Beach and Backshore. / Hesp, Patrick; Smyth, Thomas.

In: Journal of Coastal Research, No. SI 75, 2016, p. 8-12.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Surfzone-Beach-Dune interactions: Flow and Sediment Transport across the Intertidal Beach and Backshore

AU - Hesp, Patrick

AU - Smyth, Thomas

PY - 2016

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N2 - The original wave-beach-dune model (Hesp, 1982) stated that in the medium to long term, modal dissipative beaches display maximum onshore wave driven sediment transport, maximum aeolian transport off beaches, the largest foredune heights and volumes, and the largest Holocene dunefields. Modal reflective beaches display the opposite, while modal intermediate beaches display a trend in these from relatively high to relatively low sediment transport, foredune volumes, and Holocene barrier volumes with a trend from dissipative to reflective. New Computational Fluid Dynamic (CFD) modelling of flow and calculation of sediment transport over three modal beach types presented here shows that the original conceptual ideas and field data regarding aeolian sediment transport are correct. Dissipative beaches show the greatest long term potential for sediment delivery to the backshore whilst reflective beaches display the least, with a trend from relatively high to low in the intermediate beach state range.

AB - The original wave-beach-dune model (Hesp, 1982) stated that in the medium to long term, modal dissipative beaches display maximum onshore wave driven sediment transport, maximum aeolian transport off beaches, the largest foredune heights and volumes, and the largest Holocene dunefields. Modal reflective beaches display the opposite, while modal intermediate beaches display a trend in these from relatively high to relatively low sediment transport, foredune volumes, and Holocene barrier volumes with a trend from dissipative to reflective. New Computational Fluid Dynamic (CFD) modelling of flow and calculation of sediment transport over three modal beach types presented here shows that the original conceptual ideas and field data regarding aeolian sediment transport are correct. Dissipative beaches show the greatest long term potential for sediment delivery to the backshore whilst reflective beaches display the least, with a trend from relatively high to low in the intermediate beach state range.

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