A note on convergent zones

dc.contributor.author	Goodman, Ralph R.
dc.contributor.author	Duykers, Ludwig R. B.
dc.date.accessioned	2018-10-11T14:06:59Z
dc.date.available	2018-10-11T14:06:59Z
dc.date.issued	1962/02
dc.identifier	2301
dc.identifier.govdoc	TR-7
dc.identifier.uri	http://hdl.handle.net/20.500.12489/317
dc.description.abstract	An exact solution for ray paths near a sound channel with parabolic velocity profile is given for rays crossing the sound channel axis at small angles. The convergent zone for such rays for a source on axis is compared with the numerically computed result of Pederson, M.A. Journal of the Acoustical Society of America, 33, 1961: 465-474. Two simple straight line velocity gradient approximations are compared with the parabolic case for the purpose of observing their accuracy. Both cases show surprisingly good agreement over a range of choices for the gradients.
dc.format	10 p. : ill.
dc.language	English
dc.publisher	NATO. SACLANTCEN
dc.relation.ispartofseries	AD0808753
dc.subject	Underwater acoustics
dc.subject	Acoustic propagation
dc.subject	Ray acoustics
dc.subject	Parabolic propagation
dc.subject	Sound velocity in sea water
dc.title	A note on convergent zones
dc.type	Scientific Technical reports (TR)