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Influence of the Shear Property of Seabed Appearing in the Striation Pattern of the Spectrogram of Ship-radiated Noise Measured in a Shallow Sea  

Lee, Seong-Wook (한양대학교 지구해양과학과)
Hahn, Joo-Young (한양대학교 지구해양과학과)
Baek, Woon (한양대학교 지구해양과학과)
Na, Jung-Yul (한양대학교 지구해양과학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.3, 2004 , pp. 197-205 More about this Journal
Abstract
This paper represents the results of interpretation on the cause of sign changing of the striation slopes appearing in the range-frequency domain spectrogram of ship-radiated noise measured in a shallow sea. Striation patterns and dispersion characteristics simulated from a numerical model based on mode theory at various seabed conditions show that the sign changing of the striation slopes appearing in measured signal is caused by the shear property of seabed. more specifically by the shear property of the basement lying below the sediment which is estimated about 3±1m thick.
Keywords
Ship-radiated noise; Range-frequency domain spectrogram; Striation pattern; Mode interference; Influence of seabed shear property;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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