Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 최지웅 | - |
dc.date.accessioned | 2023-07-24T01:30:10Z | - |
dc.date.available | 2023-07-24T01:30:10Z | - |
dc.date.issued | 2012-03 | - |
dc.identifier.citation | Journal of the Acoustical Society of America, v. 131, NO. 3, Page. 2023-2035 | - |
dc.identifier.issn | 0001-4966;1520-8524 | - |
dc.identifier.uri | https://asa.scitation.org/doi/10.1121/1.3682063 | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/184232 | - |
dc.description.abstract | Acoustic intensity is a vector quantity described by collocated measurements of acoustic pressure and particle velocity. In an ocean waveguide, the interaction among multipath arrivals of propagating wavefronts manifests unique behavior in the acoustic intensity. The instantaneous intensity, or energy flux, contains two components: a propagating and non-propagating energy flux. The instantaneous intensity is described by the time-dependent complex intensity, where the propagating and non-propagating energy fluxes are modulated by the active and reactive intensity envelopes, respectively. Properties of complex intensity are observed in data collected on a vertical line array during the transverse acoustic variability experiment (TAVEX) that took place in August of 2008, 17 km northeast of the Ieodo ocean research station in the East China Sea, 63 m depth. Parabolic equation (PE) simulations of the TAVEX waveguide supplement the experimental data set and provide a detailed analysis of the spatial structure of the complex intensity. A normalized intensity quantity, the pressure-intensity index, is used to describe features of the complex intensity which have a functional relationship between range and frequency, related to the waveguide invariant. The waveguide invariant is used to describe the spatial structure of intensity in the TAVEX waveguide using data taken at discrete ranges. (C) 2012 Acoustical Society of America. [DOI: 10.1121/1.3682063] | - |
dc.description.sponsorship | This work is supported by the Office of Naval Research (ONR) Ocean Acoustics Program (P.H.D.), the ONR Graduate Trainee Fellowship (D.R.D.), and (for J.W.C.) the Korean Agency for Defense Development (ADD). The authors thank Dr. Altan Turgut and the Naval Research Laboratory (NRL) for the use of the vertical line array during the TAVEX experiment. We also thank the crew of the R/V Sunjin, and Dr. Peter Mignerey (NRL), Dr. Seongil Kim (ADD), and Dr. Young-Gyu Kim (ADD) for their overall experimental coordination during TAVEX. | - |
dc.language | en | - |
dc.publisher | Acoustical Society of America | - |
dc.subject | acoustic arrays | - |
dc.subject | acoustic intensity | - |
dc.subject | acoustic waveguides | - |
dc.subject | parabolic equations | - |
dc.subject | underwater acoustic propagation | - |
dc.title | Properties of the acoustic intensity vector field in a shallow water waveguide | - |
dc.type | Article | - |
dc.relation.no | 3 | - |
dc.relation.volume | 131 | - |
dc.identifier.doi | 10.1121/1.3682063 | - |
dc.relation.page | 2023-2035 | - |
dc.relation.journal | Journal of the Acoustical Society of America | - |
dc.contributor.googleauthor | Dall'Osto, David R. | - |
dc.contributor.googleauthor | Dahl, Peter H. | - |
dc.contributor.googleauthor | Choi, Jee Woong | - |
dc.sector.campus | E | - |
dc.sector.daehak | 과학기술융합대학 | - |
dc.sector.department | 해양융합공학과 | - |
dc.identifier.pid | choijw | - |
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