Abstract
Measurements are reported on the backscattering of sound from a sand bottom overlying the continental shelf near San Diego, California. Data were acquired in the 1–10 kHz band with a directive parametric source having a sidelobe-free beam, 4° in half-power width, at a grazing angle of 10°. The bottom was a flat layer of coarse grained sand and clay that contained many shell fragments, overlying a hard sub-bottom layer, some 5 m deep. The mean bottom backscattering coefficient at 1 kHz was -39 dB re 1 m2 and increased with frequency to the power of 0.5. Statistical data in the form of probability distributions show a Rayleigh distribution for ensembles of peak acoustic amplitudes at each frequency studied.
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© 1993 Springer Science+Business Media Dordrecht
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Muir, T.G., Thompson, L.A., Shooter, J.A., DeMary, T.E., Wyber, R.J. (1993). Frequency Response Measurements on Backscattering from a Shallow Sea Floor, Using a Parametric Source. In: Ellis, D.D., Preston, J.R., Urban, H.G. (eds) Ocean Reverberation. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2078-4_11
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DOI: https://doi.org/10.1007/978-94-011-2078-4_11
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