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dc.contributor.authorFortuin, Leonard
dc.date.accessioned2018-10-11T14:06:27Z
dc.date.available2018-10-11T14:06:27Z
dc.date.issued1974/02
dc.identifier1783
dc.identifier.govdocSR-3
dc.identifier.urihttp://hdl.handle.net/20.500.12489/246
dc.description.abstractIt is shown that the Helmholtz equation is not exactly correct for a medium with a time-dependent boundary. The equation can be used with very good approximation when the time-derivative of the surface elevation is much smaller than the speed of the waves through the medium. For underwater sound waves, reflected and scattered by an ocean surface that can be described by the Pierson-Moskowitz spectrum, this means that the wind speed has to be much less than the sound speed.
dc.format3 p. : ill.
dc.languageEnglish
dc.publisherNATO. SACLANTCEN
dc.sourceIn: Journal of the Acoustical Society of America, vol. 53, no. 6, 1973, pp. 1683-1685.
dc.subjectWave equations
dc.subjectHelmholtz equation
dc.subjectAcoustic propagation
dc.subjectUnderwater acoustics
dc.titleThe wave equation in a medium with a time-dependent boundary
dc.typePapers and Articles
dc.typeScientific Report (SR)


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