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Preliminary examination of the low-frequency ambient noise field in the South China Sea during the 2001 ASIAEX experiment

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dc.contributor.author Wei, Ruey-Chang
dc.contributor.author Chen, Chi-Fang
dc.contributor.author Newhall, Arthur E.
dc.contributor.author Lynch, James F.
dc.contributor.author Duda, Timothy F.
dc.contributor.author Liu, Chih-Sheng
dc.contributor.author Lin, Po-Chang
dc.date.accessioned 2006-03-16T21:01:14Z
dc.date.available 2006-03-16T21:01:14Z
dc.date.issued 2004-10
dc.identifier.citation IEEE Journal of Oceanic Engineering 29 (2004): 1308-1315 en
dc.identifier.uri http://hdl.handle.net/1912/677
dc.description Author Posting. © IEEE, 2004. This article is posted here by permission of IEEE for personal use, not for redistribution. The definitive version was published in IEEE Journal of Oceanic Engineering 29 (2004): 1308-1315, doi:10.1109/JOE.2004.836999. en
dc.description.abstract This correspondence presents a preliminary examination of the low frequency ambient noise field measured in the South China Sea component of the Asian Seas International Acoustics Experiment (ASIAEX), concentrating on the frequencies of 50, 100, 200, 400, 800, and 1200 Hz. A two-week-long time series of the noise at these frequencies is examined for structure in both the time and frequency domains. Three features of particular interest in these series are: 1) the noise due to a typhoon, which passed near the experimental site, 2) the weak tidal frequency variability of the noise field, which is probably due to internal tide induced variability in the propagation conditions, and 3) the vertical angle dependence of the noise, particularly as regards the shallow water "noise notch" phenomenon. The acoustic frequency dependence and the vertical dependence of the noise field are also examined over the course of the time series. A simple look at the noise variability statistics is presented. Finally, directions for further analysis are discussed. en
dc.description.sponsorship This work was supported by the U.S. Office of Naval Research under Grants N0001498-1-0413, N00014-00-0931, and N00014-01-0772 and by the NSC of Taiwan under Grant NSC92-2611-E110-004-CCS. en
dc.format.extent 1044180 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher IEEE en
dc.relation.uri http://dx.doi.org/10.1109/JOE.2004.836999
dc.title Preliminary examination of the low-frequency ambient noise field in the South China Sea during the 2001 ASIAEX experiment en
dc.type Article en
dc.identifier.doi 10.1109/JOE.2004.836999


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