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    J Acoust Soc Am. 2012 Jan;131(1):EL61-6.

    Laboratory investigation of a passive acoustic method for measurement of underwater gas seep ebullition.

    Greene CA, Wilson PS.

    Source

    Applied Research Laboratories, The University of Texas at Austin, PO Box 8029, Austin, Texas 78713-8029, USA. chad@chadagreene.com

    Abstract

    Passive acoustic techniques are of interest as a low-power means of quantifying underwater point-source gas ebullition. Toward the development of systems for logging natural seep activity, laboratory experiments were performed that exploited the bubble's Minnaert natural frequency for the measurement of gas flow from a model seep. Results show agreement among acoustic, optical, and gas trap ebullition measurements over the range of emission rates from 0 to 10 bubbles per second. A mathematical model is proposed to account for the real gas behavior of bubbles which cannot be approximated as ideal, such as methane at marine depths exceeding 30 m.

    © 2012 Acoustical Society of America.

    PMID:
    22280731
    [PubMed]

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