Sound transmission from a tapered fluid layer into a fast bottom.
| dc.contributor.advisor | Sanders, J.V. | |
| dc.contributor.author | Netzorg, Gregory Bertman | |
| dc.contributor.department | Physics and Chemistry | |
| dc.date.accessioned | 2012-11-16T19:16:48Z | |
| dc.date.available | 2012-11-16T19:16:48Z | |
| dc.date.issued | 1977-12 | |
| dc.description.abstract | Acoustic energy transfer from a tapered fluid layer into a fast bottom was investigated experimentally using fresh water and a saline solution separated by a sheet of 0.5 mil mylar. A 150 kHz pulsed signal was excited in the upper layer and a receiver in the lower fluid layer was used to determine the acoustic field. Measurements were made for taper angles of 1.52°, 2.51°, and 4.41° and for pc ratios of 0.745 and 0.836. Beams were observed in the lower layer, beginning at points where the depth of the tapered layer equals a cutoff depth for a normal mode. The experimental beam patterns agree well with the theoretical predictions for angles from grazing to the angle where the maximum pressure amplitude is reached. For greater angles, experiment and theory significantly diverge. | |
| dc.description.service | Lieutenant, United States Navy | |
| dc.description.uri | http://archive.org/details/soundtransmissio1094518283 | |
| dc.identifier.oclc | ocm640223729 | |
| dc.identifier.uri | https://hdl.handle.net/10945/18283 | |
| dc.language.iso | en_US | |
| dc.publisher | Monterey, CA; Naval Postgraduate School | en_US |
| dc.subject.author | acoustic waveguide | en_US |
| dc.subject.author | sound propagation in a tapered fluid layer | |
| dc.subject.author | shallow water acoustic propagation | |
| dc.subject.author | two-layered acoustic model | |
| dc.subject.lcsh | Physics | en_US |
| dc.title | Sound transmission from a tapered fluid layer into a fast bottom. | en_US |
| dc.type | Thesis | en_US |
| dspace.entity.type | Publication | |
| etd.thesisdegree.discipline | Engineering Acoustics | en_US |
| etd.thesisdegree.grantor | Naval Postgraduate School | en_US |
| etd.thesisdegree.level | Masters | en_US |
| etd.thesisdegree.name | Master of Science in Engineering Acoustics | en_US |
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