Abstract
The possibility of selecting modes that propagate between two spaced observation points without the use of vertical arrays and low-frequency emitters is considered. Modes are selected from the cross-correlation function of noise received by single hydrophones. It is shown that modes at frequencies near the minima of the dispersion dependences of their group velocities, where stationary phase regions are observed, make the main contribution to the noise cross-correlation function. This makes it possible to identify modes of different numbers and estimate their propagation times between hydrophones, which can be the basis for shallow-water passive mode tomography using data from single bottom hydrophones. The modes were selected based on data from a experiment carried out in the Barents Sea.
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Original Russian Text © V.A. Burov, A.V. Grinyuk, V.N. Kravchenko, P.Yu. Mukhanov, S.N. Sergeev, A.S. Shurup, 2014, published in Akusticheskii Zhurnal, 2014, Vol. 60, No. 6, pp. 611–622.
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Burov, V.A., Grinyuk, A.V., Kravchenko, V.N. et al. Selection of modes from a shallow-water noise field by single bottom hydrophones for passive tomography purposes. Acoust. Phys. 60, 647–656 (2014). https://doi.org/10.1134/S1063771014060049
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DOI: https://doi.org/10.1134/S1063771014060049