Theoretical model of acoustic wave propagation in shallow water

• Autorzy: Kozaczka E. , Grelowska G.
• Języki publikacji: EN

Abstrakty

EN

The work is devoted to the propagation of low frequency waves in a shallow sea. As a source of acoustic waves, underwater disturbances generated by ships were adopted. A specific feature of the propagation of acoustic waves in shallow water is the proximity of boundaries of the limiting media characterised by different impedance properties, which affects the acoustic field coming from a source situated in the water layer “ deformed” by different phenomena. The acoustic field distribution in the real shallow sea is affected not only by multiple reflections, but also by stochastic changes in the free surface shape, and statistical changes in the seabed shape and impedance. The paper discusses fundamental problems of modal sound propagation in the water layer over different types of bottom sediments. The basic task in this case was to determine the acoustic pressure level as a function of distance and depth. The results of the conducted investigation can be useful in indirect determination of the type of bottom

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2017
• Tom: 24
• Numer: 2
• Opis fizyczny: p.48-55,fig.,ref.

Twórcy

autor

Kozaczka E.

• Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland

autor

Grelowska G.

• Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland

Bibliografia

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Identyfikatory

DOI

10.1515/pomr-2017-0049