Acoustic properties of the sea bottom and their effect on long-range sound propagation on the Arctic shelf

A.A. Lunkov^†^a, V.A. Grigorev^‡^a, b, V.G. Petnikov^§^a
^aProkhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation
^bVoronezh State University, Universitetskaya pl. 1, Voronezh, 394018, Russian Federation

The results of a study of the long-range propagation of low-frequency acoustic waves in shallow water over distances much greater than the water depth are presented. The primary focus is on the characteristics of the sound fields due to the influence of an inhomogeneous seabed. The effect of the physical properties of the bottom on the attenuation and refraction of acoustic waves is given special attention. Emphasis is placed on sound propagation on the Arctic shelf, where the inhomogeneities in the upper layer of the bottom sediments are particularly pronounced. Examples of the inhomogeneities obtained from 3D seismic surveys and shallow seabed drilling are given.

Keywords: shallow water acoustics, waveguide with random inhomogeneities
PACS: 43.30.−k, 43.30.+m, 92.10.Vz (all)
DOI: 10.3367/UFNe.2023.10.039600
URL: https://ufn.ru/en/articles/2024/2/e/
Web of Science

001203946800007
Scopus

2-s2.0-85188860128
ADS NASA

2024PhyU...67..171L
Citation: Lunkov A A, Grigorev V A, Petnikov V G "Acoustic properties of the sea bottom and their effect on long-range sound propagation on the Arctic shelf" Phys. Usp. 67 171–193 (2024)

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Received: 15th, August 2023, revised: 4th, October 2023, accepted: 5th, October 2023

Оригинал: Луньков А А, Григорьев В А, Петников В Г «Акустические характеристики морского дна и их влияние на дальнее распространение звука на арктическом шельфе» УФН 194 184–207 (2024); DOI: 10.3367/UFNr.2023.10.039600