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2011 | 119 | 6A | 1009-1012
Article title

Shipping Low Frequency Noise and Its Propagation in Shallow Water

Content
Title variants
Languages of publication
EN
Abstracts
EN
One of the most significant factor influencing acoustical climate of the sea is underwater noise generated by moving ships. If the considered sea area has features of the shallow water, namely the wave frequency fulfils relation f < 10c/h, where c denotes phase speed of sound, and h is depths of the sea, then in certain distance from the wave source specific image of sound pressure distribution in the mean of wave modes appears. The modes constitute wave packet propagating with group speed in the direction parallel to the sea surface. The paper presents results of the experimental investigation concerning the distribution of the sound field created by moving ship in the shallow water, in a small distance from the ship. The main acoustical characteristics, describing features of the field are spectrograms in pseudo-3D system: distance and frequency in geometrical form, and sound intensity in the optical one (color). Results presented in such a way pointed individual features of the sound source known often as acoustical signature of the source (ship).
Keywords
EN
Publisher

Year
Volume
119
Issue
6A
Pages
1009-1012
Physical description
Dates
published
2011-06
Contributors
author
  • Gdańsk University of Technology, G. Narutowicza 11/12, 80-223 Gdańsk, Poland
  • Polish Naval Academy, Śmidowicza 69, 81-103 Gdynia, Poland
author
  • Gdańsk University of Technology, G. Narutowicza 11/12, 80-223 Gdańsk, Poland
References
  • 1. E. Kozaczka, Arch. Acoust. 13, 133 (1978)
  • 2. E. Kozaczka, G. Grelowska, Arch. Acoust. 29, 169 (2004)
  • 3. D.E. Weston, J. Sound Vibrations 18, 271 (1971)
  • 4. P.T. Arveson, D.T. Vendittis, J. Acoust. Soc. Am. 107, 118 (2000)
  • 5. E. Kozaczka, J. Domagalski, Pol. Maritime Res. 17, 64 (2010)
  • 6. E. Kozaczka, J. Domagalski, Pol. J. Env. Studies 14, 31 (2005)
  • 7. E. Kozaczka, G. Grelowska, J. Domagalski, I. Gloza, Pol. Maritime Res. 14, 40 (2007)
  • 8. E. Kozaczka, J. Domagalski, I. Gloza, Pol. Maritime Res. 17, 26 (2010)
  • 9. L. Milanowski, in: Proc. VI Symp. on Hydroacoustics, Polish Naval Academy Press, Gdynia 1989, p. 215 (in Polish)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv119n6a22kz
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