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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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    IEEEjoe102004Weietal.pdf (1019.Kb)
    Date
    2004-10
    Author
    Wei, Ruey-Chang  Concept link
    Chen, Chi-Fang  Concept link
    Newhall, Arthur E.  Concept link
    Lynch, James F.  Concept link
    Duda, Timothy F.  Concept link
    Liu, Chih-Sheng  Concept link
    Lin, Po-Chang  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/677
    As published
    https://doi.org/10.1109/JOE.2004.836999
    DOI
    10.1109/JOE.2004.836999
    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.
    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.
    Collections
    • Applied Ocean Physics and Engineering (AOP&E)
    Suggested Citation
    IEEE Journal of Oceanic Engineering 29 (2004): 1308-1315
     

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