Ocean Variability & Acoustic Propagation

Ocean Variability & Acoustic Propagation

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Fifteen years ago NATO organised a conference entitled 'Ocean Acoustic Modelling'. Many of its participants were again present at this variability workshop. One such participant. in concluding his 1975 paper, quoted the following from a 1972 literature survey: ' ... history presents a sad lack of communications between acousticians and oceanographers' Have we done any better in the last 15 years? We believe so, but only moderately. There is still a massive underdeveloped potential for acousticians and oceanographers to make significant progress together. Currently, the two camps talk together insufficiently even to avoid simple misun derstandings. such as those in Table 1. Table 1 Ocsanographic and acoustic jargon (from an idea by Pol/ardi Jargon Oceanographic use Acoustic use dbordB decibar (depth in m) decibel (energy level) PE primitive equations parabolic equations convergence zone converging currents converging rays (downwelling water) (high energy density) front thermohaline front wave, ray or time front speed water current speed sound propagation speed 1 The list goes on.Note the uniform temporal spacing of the strong direct wave of the airgunsa#39; primary pulse and its first two bubble pulses across ... 50 meter group interval streamer and a pneumatic sound source array consisting of four (4) BOLT airguns (Modelanbsp;...

Title:Ocean Variability & Acoustic Propagation
Author:J. Potter, A. Warn-Varnas
Publisher:Springer Science & Business Media - 2012-12-06


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