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Abstract
Taking practical advantage of nonlinear acoustical interactions occurring in seawater [1, 2] requires knowledge of the parameter of nonlinearity B=A of this medium. The literature does not offer much reports on B=A parameter value for seawater. In the few papers concerning that address the issue, results concerning ocean waters with high salinity and at large depths are given [3], while studies concerning seawater with low salinity are published extremely seldom [4, 5]. Waters of the southern Baltic are characterized with low salinity not exceeding 20 PSU, temperature varying from 0 C to about 20 C, and depth practically limited to 100 meters. For such conditions, B=A parameter value ranges from about 4.3 (t = 0 C, S = 0 PSU, p = 0 Pa) to about 5.15 (t = 20 C, S = 20 PSU, p = 106 Pa) [6]. This paper discusses the effect of nonlinearity of the medium on the course of phenomenon of propagation of a high-intensity (finite amplitude) wave in the case of both strong and weak nonlinear distortions with special attention paid to hydrological conditions prevailing in the Baltic Sea.
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- Category:
- Monographic publication
- Type:
- rozdział, artykuł w książce - dziele zbiorowym /podręczniku w języku o zasięgu międzynarodowym
- Title of issue:
- HYDROACOUSTICS OF SHALLOW WATER strony 67 - 90
- Language:
- English
- Publication year:
- 2013
- Bibliographic description:
- Grelowska G.: Nonlinear Properties of Seawater as a Factor Determining Nonlinear Wave Propagation// HYDROACOUSTICS OF SHALLOW WATER/ ed. Eugeniusz Kozaczka, Grazyna Grelowska Warszawa: POLISH ACADEMY OF SCIENCES INSTITUTE OF FUNDAMENTAL TECHNOLOGICAL RESEARCH, 2013, s.67-90
- Verified by:
- Gdańsk University of Technology
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