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Developments in acoustics for studying wave-driven boundary layer flow and sediment dynamics over rippled sand-beds

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10.1016/j.csr.2018.07.008
 
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Thorne, Peter D.
Hurther, David
Cooke, Richard D.
Cáceres Rabionet, IvánMés informacióMés informacióMés informació
Barraud, P.A.
Sánchez-Arcilla Conejo, AgustínMés informacióMés informacióMés informació
Document typeArticle
Defense date2018-08
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 4.0 International
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 4.0 International
ProjectHYDRALAB IV - HYDRALAB IV More than water; dealing with the complex interaction of water with environmental elements, sediment, structures and ice (EC-FP7-261520)
HYDRALAB-PLUS - HYDRALAB+ Adapting to climate change (EC-H2020-654110)
Abstract
The processes of sediment entrainment, transport, and deposition over bedforms are highly dynamic and temporally and spatially variable. Obtaining measurements to understand these processes has led to ongoing developments in instrumentation for studying near-bed sediment dynamics, with the outputs applied to the development and assessment of sediment transport modelling. In the present study results are reported from three acoustic systems deployed to make observations of bedforms, bedload, suspended concentration and horizontal and vertical velocity components. To evaluate the instruments a series of near-bed boundary layer measurements were collected in a large scale flume facility over a rippled bed of medium sand under regular waves. The observations were conducted as part of Joint Research Activities within the EU funded Hydralab project. The suite of acoustic instruments consisted of a Bedform And Suspended Sediment Imager, BASSI, a three dimensional acoustic ripple profiler, 3D-ARP, and three Acoustic Concentration and Velocity Profilers, ACVP's. Here results are reported from the deployment of the instruments, to illustrate the ongoing developments in acoustics and the expanding capability of the application of acoustics to the study of near-bed flow and sediment dynamics.
CitationThorne, P.D. [et al.]. Developments in acoustics for studying wave-driven boundary layer flow and sediment dynamics over rippled sand-beds. "Continental shelf research", Agost 2018, vol. 166, p. 119-137. 
URIhttp://hdl.handle.net/2117/184501
DOI10.1016/j.csr.2018.07.008
ISSN0278-4343
Publisher versionhttps://www.sciencedirect.com/science/article/pii/S0278434318300931
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  • LIM/UPC - Laboratori d'Enginyeria Marítima - Articles de revista [235]
  • Departament d'Enginyeria Civil i Ambiental - Articles de revista [2.678]
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