By M. G. Briscoe (auth.), John Potter, Alex Warn-Varnas (eds.)

ISBN-10: 9401054622

ISBN-13: 9789401054621

ISBN-10: 9401133123

ISBN-13: 9789401133128

Fifteen years in the past NATO organised a convention entitled 'Ocean Acoustic Modelling'. lots of its contributors have been back current at this variability workshop. One such player. in concluding his 1975 paper, quoted the next from a 1972 literature survey: ' ... historical past provides a tragic loss of communications among acousticians and oceanographers' Have we performed any greater within the final 15 years? We think so, yet in basic terms reasonably. there's nonetheless an immense underdeveloped strength for acousticians and oceanographers to make major development jointly. at present, the 2 camps speak jointly insufficiently even to prevent easy misun­ derstandings. resembling these in desk 1. desk 1 Ocsanographic and acoustic jargon (from an idea through Pol/ardi Jargon Oceanographic use Acoustic use dbordB decibar (depth in m) decibel (energy point) PE primitive equations parabolic equations convergence region converging currents converging rays (downwelling water) (high power density) entrance thermohaline entrance wave, ray or time entrance velocity water present velocity sound propagation pace 1 The record is going on.

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Both Uscinski and Beran (1990) believe that this is the result of a serious failure in moment theory for the cross-frequency case. 01 Figure 9. Zeroth-order evaluations for the 8 kHz intensity auto-spectra as a function of propagation range through the MATE scattering conditions. 5 Ian mimics the TCF, as expected for weak scattering. 5. AATE Measurements of E(z,t) MATE demonstrated that extensive environmental measurements must be made simultaneously with acoustic field measurements so that scattering conditions can be detennined.

Ballard and BJ. Uscinski, "Large intensity fluctuations in a randomly varying ocean: Part I. Theory and its evaluation," Unpublished manuscript, (1990). R. DasheD, "Path integrals for waves in random media," J. Math. , 20(5), pp. 894-920 (1979). F. Desaubies, "Acoustic-phase fluctuations induced by internal waves in the ocean," J. Acoust. Soc. , 60(4), pp. 795-799 (1976). F. Desaubies, "On the scattering of sound by internal waves in the ocean", J. Acoust. Soc. , 64(5), pp. 1460 -1469 (1978). R.

894-920 (1979). F. Desaubies, "Acoustic-phase fluctuations induced by internal waves in the ocean," J. Acoust. Soc. , 60(4), pp. 795-799 (1976). F. Desaubies, "On the scattering of sound by internal waves in the ocean", J. Acoust. Soc. , 64(5), pp. 1460 -1469 (1978). R. M. Flatte, "Calculation of the strength and diffraction parameters in oceanic sound transmission," J. Acoust. Soc. , 67(5), pp. 1523-1531 (1980). E. Ewart, C. I. Uscinski, "Intensity fluctuations. Part II: Comparison with the Cobb experiment," J.

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Ocean Variability & Acoustic Propagation by M. G. Briscoe (auth.), John Potter, Alex Warn-Varnas (eds.)

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