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Acoustical observations of velocity and suspended sediment structures due to oscillatory flow over a rippled bed

Thorne, P.D.; Hurther, D.. 2009 Acoustical observations of velocity and suspended sediment structures due to oscillatory flow over a rippled bed. In: Mizuguchi, Masaru ; Sato, Shinji , (eds.) Proceedings Of Coastal Dynamics 2009: Impacts of Human Activities on Dynamic Coastal Processes. Singapore, World Scientific, Paper 131, 11pp.

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Abstract/Summary

Acoustic measurements of the flow, suspended sediments and bedforms were collected under regular waves above a sandy bed in a large scale flume facility. The objective of the study was to obtain simultaneous collocated near bed profiles of the horizontal and vertical flow and the suspended concentration, as bed forms changed due to increasing wave height. To obtain the measurements a recently developed dual frequency acoustic Doppler velocity profiler was deployed to provide concurrent measurements of the hydrodynamics, the entrained sediments and the location of the bed. Here we present some of the preliminary results from the study.

Item Type: Publication - Book Section
Digital Object Identifier (DOI): 10.1142/9789814282475_0130
Programmes: POL Programmes
ISBN: 978-981-4282-46-8
Additional Keywords: hydrodynamics; sediment transport; coherent Doppler; backscatter; acoustics; ripples; vortex; turbulence
NORA Subject Terms: Marine Sciences
Date made live: 31 Aug 2012 10:10
URI: http://nora.nerc.ac.uk/id/eprint/19444

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