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Integrated scheme of rapid environmental assessment for shallow water acoustics
Le Gac, J.-C.; Hermand, J.-P.; Absil, F. (2008). Integrated scheme of rapid environmental assessment for shallow water acoustics. J. Acoust. Soc. Am. 123(5): 3623. dx.doi.org/10.1121/1.2934844
In: The Journal of the Acoustical Society of America. American Institute of Physics: New York, etc. ISSN 0001-4966, more
Peer reviewed article  

Available in  Authors 
Document type: Summary

Authors  Top 
  • Le Gac, J.-C.
  • Hermand, J.-P., more
  • Absil, F.

Abstract
    Predicting sound propagation in shallow or very shallow water environments requires that the frequency-dependent acoustic properties be assessed for all components of the waveguide, i.e., the water column, sea bottom and sea surface interface. During the Maritime Rapid Environmental Assessment MREA?BP'07 sea trial in April-May 2007, south of Elba Island in the Mediterranean Sea, an integrated MREA scheme has been implemented to provide a full 4D (3D+T) environmental picture that is directly exploitable by acoustic propagation models. Based on a joint multi-disciplinary effort, several standard and advanced techniques of environmental characterization covering the fields of underwater acoustics, physical oceanography and geophysics have been combined within a coherent scheme of data acquisition, processing and assimilation. The paper presents the whole architecture of the implemented scheme. Based on a preliminary analysis of MREA?BP'07 data, advantages and drawbacks of the approach will be discussed. Ways ahead for further improvement and perspectives are finally drawn.

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