수중 모래퇴적물에서 차주파수 음파의 비선형 산란
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Title
- 수중 모래퇴적물에서 차주파수 음파의 비선형 산란
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Alternative Title
- Nonlinear Scattering of Difference Frequency Acoustic Wave in Water-Saturated Sandy Sediment
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Author(s)
- 김병남; 이강일; 윤석왕; 최복경
- KIOST Author(s)
- Choi, Bok Kyoung(최복경)
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Alternative Author(s)
- 최복경
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Publication Year
- 2004-05-14
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Abstract
- Nonlinear scattering of difference frequency acoustic wave in a water-saturated sandy sediment was investigated. Difference frequency acoustic wave was observed to be scattered due to the nonlinearity of water-saturated sandy sediment when the collinear acoustic waves with two different fundamental frequencies are incident on the sediment. The pressure level of the difference frequency acoustic wave was 6 dB higher than the background noise level. It seems very useful to evaluate the nonlinear parameter of water-saturated sandy sediment without disturbing the sediment. Such nonlinear acoustic response of water-saturated sandy sediment can be used as background acoustic data for estimating the gas void fraction in marine gassy sandy sediment.
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/31909
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Bibliographic Citation
- 2004년도 한국음향학회 춘계학술발표대회 논문집, pp.347 - 348, 2004
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Publisher
- 한국음향학회
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Type
- Conference
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Language
- Korean
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