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dc.contributor.advisorJoseph, John E.
dc.contributor.authorOng, Ming Yi
dc.dateSep-16
dc.date.accessioned2016-11-02T17:17:56Z
dc.date.available2016-11-02T17:17:56Z
dc.date.issued2016-09
dc.identifier.urihttp://hdl.handle.net/10945/50463
dc.description.abstractSound waves propagating through the oceans are refracted by internal waves. In the shallow waters of the continental shelves, an additional downward refraction of sound waves due to internal waves can cause them to interact more often with the seabed, resulting in additional energy from the sound waves being dissipated into the seabed. This study investigates how internal waves affect sound propagation on the continental shelves. It first quantified the types of internal waves on the continental shelf of California, near Point Sal, using data collected from a field experiment. Next, the effects that these internal waves have on sound propagation were quantified via simulations using a ray theory acoustic model. The results showed that internal waves in the experiment area were largely generated by tidal forcing. Compared to simulations without internal waves, simulations accounting for the effects of internal waves resulted in higher sound energy loss, as internal waves tend to cause sound waves to strike the seabed at steeper angles and over shorter distances. Thus, to enable a more accurate assessment of underwater acoustic system performance, the effects of internal waves on sound propagation in shallow waters need to be accounted for.en_US
dc.description.urihttp://archive.org/details/effectsofinterna1094550463
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsCopyright is reserved by the copyright owner.en_US
dc.titleEffects of internal waves on sound propagation in the shallow waters of the continental shelvesen_US
dc.typeThesisen_US
dc.contributor.secondreaderMargolina, Tetyana
dc.contributor.departmentOceanography
dc.subject.authorinternal wavesen_US
dc.subject.authorshallow wateren_US
dc.subject.authorsound propagationen_US
dc.subject.authorcontinental shelvesen_US
dc.description.serviceMilitary Expert 6, Republic of Singapore Navyen_US
etd.thesisdegree.nameMaster of Science in Physical Oceanographyen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplinePhysical Oceanographyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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