Spectral properties of the interference head wave
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Jee Woong | - |
dc.contributor.author | Dahl, Peter H. | - |
dc.date.accessioned | 2021-06-23T19:38:15Z | - |
dc.date.available | 2021-06-23T19:38:15Z | - |
dc.date.created | 2021-01-21 | - |
dc.date.issued | 2007-07 | - |
dc.identifier.issn | 0001-4966 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/43570 | - |
dc.description.abstract | The interference head wave propagating through a sediment with a linear sound speed gradient is studied as a function of the parameter zeta, which is itself a function of acoustic frequency f, sediment sound speed and its gradient, and range. For zeta< 1 the amplitude spectrum of the interference head waves goes as vertical bar S(f)vertical bar /f, where S(f) is the source spectrum. For increasing zeta beyond unity a more complicated modulation of S(f) ensues, which is explained by a channel transfer function H-1(f), constructed analytically from a summation of terms involving zeroth-order refracted waves (referred to as a ray approach). For zeta greater than or similar to 2 this summation compares well with a wave theory result for the interference head wave involving a fluid-fluid boundary. The amplitude spectrum of the interference head wave in the absence of sediment attenuation is vertical bar S(f)vertical bar center dot vertical bar H-1(f)vertical bar and it is essential to know these to obtain an estimate of sediment attenuation from field observations. Examples of vertical bar S(f)vertical bar center dot vertical bar H-1(f)vertical bar are presented for which H-1(f) is computed directly using the ray approach and indirectly using the parabolic wave equation. A brief discussion on the application of these results towards the inversion of sediment attenuation is given. (c) 2007 Acoustical Society of America. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Acoustical Society of America | - |
dc.title | Spectral properties of the interference head wave | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Choi, Jee Woong | - |
dc.identifier.doi | 10.1121/1.2743156 | - |
dc.identifier.scopusid | 2-s2.0-34547467919 | - |
dc.identifier.wosid | 000248161500014 | - |
dc.identifier.bibliographicCitation | Journal of the Acoustical Society of America, v.122, no.1, pp.146 - 150 | - |
dc.relation.isPartOf | Journal of the Acoustical Society of America | - |
dc.citation.title | Journal of the Acoustical Society of America | - |
dc.citation.volume | 122 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 146 | - |
dc.citation.endPage | 150 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Acoustics | - |
dc.relation.journalResearchArea | Audiology & Speech-Language Pathology | - |
dc.relation.journalWebOfScienceCategory | Acoustics | - |
dc.relation.journalWebOfScienceCategory | Audiology & Speech-Language Pathology | - |
dc.subject.keywordPlus | GEOACOUSTIC INVERSION | - |
dc.subject.keywordPlus | 1ST-ORDER | - |
dc.identifier.url | https://asa.scitation.org/doi/10.1121/1.2743156 | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
55 Hanyangdeahak-ro, Sangnok-gu, Ansan, Gyeonggi-do, 15588, Korea+82-31-400-4269 sweetbrain@hanyang.ac.kr
COPYRIGHT © 2021 HANYANG UNIVERSITY. ALL RIGHTS RESERVED.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.