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Theoretical Model of Acoustic Wave Propagation in Shallow Water

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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

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
Polish Maritime Research nr 24, strony 48 - 55,
ISSN: 1233-2585
Język:
angielski
Rok wydania:
2017
Opis bibliograficzny:
Kozaczka E., Grelowska G.: Theoretical Model of Acoustic Wave Propagation in Shallow Water// Polish Maritime Research. -Vol. 24, iss. 2 (2017), s.48-55
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1515/pomr-2017-0049
Weryfikacja:
Politechnika Gdańska

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