Show simple item record

dc.contributor.authorJones, Adrian
dc.contributor.authorMaggi, Amos
dc.contributor.authorBartel, David
dc.contributor.authorDuncan, Alexander
dc.contributor.authorZinoviev, Alex
dc.contributor.editorTerrance McMinn
dc.date.accessioned2017-01-30T10:53:52Z
dc.date.available2017-01-30T10:53:52Z
dc.date.created2013-03-27T20:00:55Z
dc.date.issued2012
dc.identifier.citationJones, Adrian D. and Maggi, Amos and Bartel, David W. and Duncan, Alec J. and Zinoviev, Alex. 2012. Comparison of a small slope approximation model of reflection loss at the rough ocean surface with stochastic modelling using PE, in McMinn, Terrance (ed), Acoustics 2012 Fremantle: Acoustics, Development and the Environment, The 2012 Conference of the Australian Acoustical Society, Nov 21-23 2012. Fremantle, Western Australia: Australian Acoustical Society
dc.identifier.urihttp://hdl.handle.net/20.500.11937/6549
dc.description.abstract

The accurate modelling of underwater acoustic reflection from a wind-roughened ocean surface is a challenging problem. Some complicating factors are the presence of near-surface bubbles and the potential for shadowing of acoustic energy by parts of the surface itself. One essential factor, which is the subject of the present paper, is the specular reflection of coherent plane waves at an ocean-like rough surface. We tested the accuracy of the rough surface reflection model adopted by the authors, the small-slope approximation (SSA) approach as used by Williams et al. (JASA, 116, Oct. 2004). The SSA model was used to compute values of the coherent plane wave reflection loss per bounce for wind speeds between 5 and 12.5 m/s, frequencies between 1.5 and 9 kHz, and grazing angles between about 1 and 10 degrees. These values were compared to those obtained from a Monte-Carlo approach based on the Parabolic Equation (PE) method, where realistic ocean surfaces were generated based on the Pierson-Moskowitz spectrum for ocean surface heights. The SSA model compared favourably with the more rigorous PE method for most of the range of parameters considered.

dc.publisherAcoustical Society of Australia
dc.relation.urihttp://www.acoustics.asn.au/conference_proceedings/AAS2012/papers/p3.pdf
dc.subjectwind-roughened
dc.subjectunderwater
dc.subjectbubbles
dc.subjectacoustic
dc.subjectmodelling
dc.titleComparison of a small slope approximation model of reflection loss at the rough ocean surface with stochastic modelling using PE.
dc.typeConference Paper
dcterms.source.titleProceedings of the Acoustical Society of Australia
dcterms.source.seriesProceedings of the Acoustical Society of Australia
dcterms.source.isbn9780646590394
dcterms.source.conferenceAcoustics 2012 Fremantle: Acoustics, Development and the Environment, the 2012 Conference of the Australian Acoustical Society
dcterms.source.conference-start-dateNov 21 2012
dcterms.source.conferencelocationFremantle, Western Australia
dcterms.source.placeAustralia
curtin.department
curtin.accessStatusOpen access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record