Hydrodynamics and Sediment Fluxes across an Onshore Migrating Intertidal Bar

Aagaard, Troels; Hughes, Michael G.; Møller-Sørensen, Regin; Andersen, Steffen

doi:10.2112/04-0214.1

Cited by 59 publications

(32 citation statements)

References 13 publications

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“…This case developed a small major bar but also a few minor bars or large ripples either side of the bar. Compared to case S1, the bars tended to move onshore due to the low-energy conditions, consistent with Aagaard et al (2006). Initially, the conditions promoted strong onshore sediment transport outside the breakpoint.…”

Section: Profile Response To Monochromatic Wavessupporting

confidence: 72%

Sediment transport and beach morphodynamics induced by free long waves, bound long waves and wave groups

Baldock

Manoonvoravong

Pham

2010

Coastal Engineering

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Section: Profile Response To Monochromatic Wavessupporting

confidence: 72%

Sediment transport and beach morphodynamics induced by free long waves, bound long waves and wave groups

Baldock

Manoonvoravong

Pham

2010

Coastal Engineering

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“…It is generally accepted that mean offshore-directed flows are responsible for beach erosion and offshore bar migration under energetic wave conditions, but there is considerable debate in the literature as to what causes beach accretion and onshore bar migration under calm wave conditions. There have been a number of processes proposed that may be implicated in onshore sediment transport, berm construction and bar migration, including: (1) onshore mass flux due to cell circulation (Aagaard et al, 2006); (2) sediment stratification (Conley et al, 2008); (3) turbulence associated with breaking waves and bores (Butt et al, 2004); (4) cross-shore velocity skewness ('wave skewness'; Marino-Tapia et al, 2007); (5) cross-shore velocity acceleration skewness ('wave asymmetry'; Hoefel and Elgar, 2003); (6) ventilated boundary layer (Conley and Inman, 1992); and (7) plug flow due to horizontal pressure gradients (Foster et al, 2006). These different processes are not necessarily mutually exclusive and all, except (1), are addressed during BARDEX II.…”

Section: Introductionmentioning

confidence: 99%

Large-scale Barrier Dynamics Experiment II (BARDEX II): Experimental design, instrumentation, test program, and data set

Masselink

Ruju

Conley

et al. 2016

Coastal Engineering

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Despite the increased sophistication of numerical models and field techniques for investigating wave-induced nearshore sediment transport and ensuing beach morphological response, there remains a significant demand for large-scale laboratory experiments to address this research topic. Here, we describe the Barrier Dynamics II experiment (BARDEX II), which involved placing a near prototype-scale sandy barrier in the middle of the Delta Flume in the Netherlands and subjecting the structure to a range of wave, tide and water level conditions. A unique aspect of the experiment was the presence of a lagoon behind the barrier, as often occurs in natural barrier settings, providing a convenient means to experimentally manipulate the groundwater hydrology within the barrier. The overall aim of the BARDEX II was to collect a large-scale data set of energetic waves acting on a sandy beach/barrier system to improve our quantitative understanding and modelling capability of shallow water sediment transport processes in the inner surf, swash and overwash zone. In this paper we introduce BARDEX II and provide a detailed description of the experiment, including the experimental design, instrumentation, test programme and data set, as well as presenting some examples of the morphological and hydrodynamic data set. We also reflect objectively on the strengths and weaknesses of the data set. This paper serves as an introduction to a special issue of Coastal Engineering, solely devoted to the results of BARDEX II.

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“…The few examples of when energetics models have been able to successfully predict onshore transport have been when three-dimensional circulation has existed (e.g. Aagaard et al, 1998Aagaard et al, , 2006, whereby the mass flux of the waves is returned seawards through long-shore feeder and rip channels rather than through the bed return flow (e.g. Masselink et al, 2008a).…”

Section: Introductionmentioning

confidence: 99%

Onshore sediment transport on a sandy beach under varied wave conditions: Flow velocity skewness, wave asymmetry or bed ventilation?

Austin¹,

Masselink²,

O'Hare³

et al. 2009

Marine Geology

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Hydrodynamics and Sediment Fluxes across an Onshore Migrating Intertidal Bar

Cited by 59 publications

References 13 publications

Sediment transport and beach morphodynamics induced by free long waves, bound long waves and wave groups

Sediment transport and beach morphodynamics induced by free long waves, bound long waves and wave groups

Large-scale Barrier Dynamics Experiment II (BARDEX II): Experimental design, instrumentation, test program, and data set

Onshore sediment transport on a sandy beach under varied wave conditions: Flow velocity skewness, wave asymmetry or bed ventilation?

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