Impact of a uniform bore on an erodible beach

Fangfang Zhu; Nicholas Dodd; Riccardo Briganti

doi:10.1016/j.coastaleng.2011.08.006

Impact of a uniform bore on an erodible beach

Fangfang Zhu, Nicholas Dodd, Riccardo Briganti

Department of Civil Engineering

Research output: Journal Publication › Article › peer-review

15 Citations (Scopus)

Abstract

The impact of a uniform bore on an erodible beach is investigated using a shallow water description and a sediment conservation equation. The solution, which is obtained using the method of characteristics, employs a cubic bed-load formula and a crudely calibrated sediment transport coefficient. It is found that, as with the fixed bed case of Hibberd and Peregrine (1979), a backwash bore forms, which for the mobile bed also comprises a bed step. It is found that this bed step achieves a significant height. The volume of sand deposited above the final still water level is consistent with that observed under certain events on some sandy beaches.

Original language	English
Pages (from-to)	326-333
Number of pages	8
Journal	Coastal Engineering
Volume	60
Issue number	1
DOIs	https://doi.org/10.1016/j.coastaleng.2011.08.006
Publication status	Published - Feb 2012

Keywords

Bore
Sediment transport
Swash
Tsunami morphodynamics

ASJC Scopus subject areas

Environmental Engineering
Ocean Engineering

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10.1016/j.coastaleng.2011.08.006

Cite this

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AB - The impact of a uniform bore on an erodible beach is investigated using a shallow water description and a sediment conservation equation. The solution, which is obtained using the method of characteristics, employs a cubic bed-load formula and a crudely calibrated sediment transport coefficient. It is found that, as with the fixed bed case of Hibberd and Peregrine (1979), a backwash bore forms, which for the mobile bed also comprises a bed step. It is found that this bed step achieves a significant height. The volume of sand deposited above the final still water level is consistent with that observed under certain events on some sandy beaches.

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KW - Swash

KW - Tsunami morphodynamics

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JF - Coastal Engineering

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Impact of a uniform bore on an erodible beach

Abstract

Keywords

ASJC Scopus subject areas

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