Measurements of Breaking Wave Noise in the Sea-Cliff Zone
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概要
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This paper presents measurements of the breaking wave noise originated at a sea-cliff zone along the coast of Ando in southern Korea. The breaking noise was recorded using an omni-directional hydrophone deployed at a depth of 3 m at a location approximately 80 m from the sea-cliff. A spectrogram indicates that the breaking noise persists for a few seconds after a sudden onset with broad-band acoustic energy. The source level per unit area is estimated from the received power-averaged spectral density which was compensated for the acoustic propagation effect from the effective source region to the receiver, predicted using the parabolic equation method. The form of the source level spectrum of the waves breaking against the sea-cliff is similar to that reported in the literature for the plunging breakers in the surf zone. However, the overall source level of the waves breaking against the sea-cliff is 5 to 15 dB higher than that of the plunging breakers.
- 2010-07-25
著者
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Choi Jee
Department Of Dermatology And Research Institute Of Dermatology University Of Ulsan College Of Medic
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Cho Sungho
Department Of Computer Science And Engineering At Korea Univ.
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Choi Jee
Department of Environmental Marine Sciences, Hanyang University, 1271 Sa-3-dong, Ansan, Gyeonggi-do 426-791, Korea
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Cho Sungho
Department of Environmental Marine Sciences, Hanyang University, 1271 Sa-3-dong, Ansan, Gyeonggi-do 426-791, Korea
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