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A numerical halynometry experiment on an acoustic path in the Arctic ocean

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Abstract

It is shown that, in the Arctic-type deep-water waveguide, the first water mode can be used for acoustic halynometry at frequencies of about 40 Hz and higher. For this task, the stochastic sound scattering by the ice cover and the frequency dispersion of modes are the interfering factors. The data of numerical modeling are presented for the levels of the regular and stochastic components of the pseudo-noise signal and for the impulse response of the waveguide to narrow-band and broadband transmissions. To suppress the stochastically scattered component of the sound field, one can use a horizontal extended array. However, choosing the experimental site in a region with a mainly smooth ice cover may be more advantageous. It is shown that the frequency band of the received signal can be broadened by introducing a frequency-time correction of the propagation time of the first mode as a function of the sound frequency.

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Authors and Affiliations

  1. Andreev Acoustics Institute, Russian Academy of Sciences, ul. Shvernika 4, Moscow, 117036, Russia

    V. M. Kudryashov

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  1. V. M. Kudryashov
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Translated from Akusticheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 46, No. 6, 2000, pp. 798–802.

Original Russian Text Copyright © 2000 by Kudryashov.

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Kudryashov, V.M. A numerical halynometry experiment on an acoustic path in the Arctic ocean. Acoust. Phys. 46, 700–704 (2000). https://doi.org/10.1134/1.1326725

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  • DOI: https://doi.org/10.1134/1.1326725

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