Sediment transfer from bar to beach? Measurements using a Pulse-Coherent Acoustic Doppler Profiler

Troels Aagaard; Michael Hughes; Brian Greenwood

Sediment transfer from bar to beach? Measurements using a Pulse-Coherent Acoustic Doppler Profiler

Troels Aagaard, Michael Hughes, Brian Greenwood

Geologi

1 Citationer (Scopus)

Abstract

Earlier field measurements of sediment transport in bar troughs have indicated that onshore transport across troughs is very small and that on barred beaches, sediment mass transfer from the bar to the beach occurs mainly through bar welding. Here, we revisit the issue using novel instrumentation that is capable of recording suspended sediment transport at high resolution down to about 0.8 cm above the seabed. It was found that under accretionary fairweather conditions, a bar eroded and a beach berm accreted but the net suspended sediment transport across the trough was very small and seaward directed. The observed berm accretion could also not be ascribed to bedload transport through migration of wave ripples. It is concluded that even under favourable conditions, onshore sediment transport across bar troughs appears to be limited.

Originalsprog	Engelsk
Titel	Journal of Coastal Research
Antal sider	5
Vol/bind	Special Issue 64
Udgivelsessted	USA
Forlag	Coastal Education and Research Foundation
Publikationsdato	2011
Sider	2002-2006
ISBN (Elektronisk)	0749-0208
Status	Udgivet - 2011
Begivenhed	International Costal Symposium - Szczecin, Polen Varighed: 9 maj 2011 → 14 maj 2011 Konferencens nummer: 11

Konference

Konference	International Costal Symposium
Nummer	11
Land/Område	Polen
By	Szczecin
Periode	09/05/2011 → 14/05/2011

Citationsformater

Sediment transfer from bar to beach? Measurements using a Pulse-Coherent Acoustic Doppler Profiler. / Aagaard, Troels; Hughes, Michael; Greenwood, Brian.

Journal of Coastal Research. Bind Special Issue 64 USA : Coastal Education and Research Foundation, 2011. s. 2002-2006.

Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › peer review

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title = "Sediment transfer from bar to beach? Measurements using a Pulse-Coherent Acoustic Doppler Profiler",

abstract = "Earlier field measurements of sediment transport in bar troughs have indicated that onshore transport across troughs is very small and that on barred beaches, sediment mass transfer from the bar to the beach occurs mainly through bar welding. Here, we revisit the issue using novel instrumentation that is capable of recording suspended sediment transport at high resolution down to about 0.8 cm above the seabed. It was found that under accretionary fairweather conditions, a bar eroded and a beach berm accreted but the net suspended sediment transport across the trough was very small and seaward directed. The observed berm accretion could also not be ascribed to bedload transport through migration of wave ripples. It is concluded that even under favourable conditions, onshore sediment transport across bar troughs appears to be limited.",

author = "Troels Aagaard and Michael Hughes and Brian Greenwood",

year = "2011",

language = "English",

volume = "Special Issue 64",

pages = "2002--2006",

booktitle = "Journal of Coastal Research",

publisher = "Coastal Education and Research Foundation",

note = "International Costal Symposium, ICS 2011 ; Conference date: 09-05-2011 Through 14-05-2011",

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TY - GEN

T1 - Sediment transfer from bar to beach? Measurements using a Pulse-Coherent Acoustic Doppler Profiler

AU - Aagaard, Troels

AU - Hughes, Michael

AU - Greenwood, Brian

N1 - Conference code: 11

PY - 2011

Y1 - 2011

N2 - Earlier field measurements of sediment transport in bar troughs have indicated that onshore transport across troughs is very small and that on barred beaches, sediment mass transfer from the bar to the beach occurs mainly through bar welding. Here, we revisit the issue using novel instrumentation that is capable of recording suspended sediment transport at high resolution down to about 0.8 cm above the seabed. It was found that under accretionary fairweather conditions, a bar eroded and a beach berm accreted but the net suspended sediment transport across the trough was very small and seaward directed. The observed berm accretion could also not be ascribed to bedload transport through migration of wave ripples. It is concluded that even under favourable conditions, onshore sediment transport across bar troughs appears to be limited.

AB - Earlier field measurements of sediment transport in bar troughs have indicated that onshore transport across troughs is very small and that on barred beaches, sediment mass transfer from the bar to the beach occurs mainly through bar welding. Here, we revisit the issue using novel instrumentation that is capable of recording suspended sediment transport at high resolution down to about 0.8 cm above the seabed. It was found that under accretionary fairweather conditions, a bar eroded and a beach berm accreted but the net suspended sediment transport across the trough was very small and seaward directed. The observed berm accretion could also not be ascribed to bedload transport through migration of wave ripples. It is concluded that even under favourable conditions, onshore sediment transport across bar troughs appears to be limited.

M3 - Article in proceedings

VL - Special Issue 64

SP - 2002

EP - 2006

BT - Journal of Coastal Research

PB - Coastal Education and Research Foundation

CY - USA

T2 - International Costal Symposium

Y2 - 9 May 2011 through 14 May 2011

ER -

Sediment transfer from bar to beach? Measurements using a Pulse-Coherent Acoustic Doppler Profiler

Abstract

Konference

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