Research on Dispersion Characteristics of Scholte Wave in Shallow Sea

doi:10.3969/j.issn.1000-1093.2018.09.016

Abstract

Abstract: In order to study the dispersion characteristics of Scholte wave propagation in shallow sea, the characteristic equation of Scholte wave is deduced based on the seabed semi-infinite space model. The dispersion characteristics of Scholte wave under the condition of several kinds of typical elastic solid seabed are simulated. The frequency band of Scholte wave energy concentration is found by using the wavelet transform method to analyze the experimental data. The dispersion characteristics of Scholte wave are studied by using moving window analysis method. From the analysis of experimental data it is found that the energy of Scholte wave is mainly concentrated in 5-15 Hz, and there is obvious dispersion phenomenon in 5-10 Hz. The results show that the expermental results of the lake are consistent with the theoretically simulated results in the law of dispersion, and the moving window analysis method can be used to analyze the dispersion characteristics of Scholte wave. Key

Key words: Scholtewave, dispersioncharacteristic, movingwindowanalysis, phasevelocity

CLC Number:

LUO Xia-yun, CHENG Guang-li, ZHANG Ming-min, LIU Yan-chun. Research on Dispersion Characteristics of Scholte Wave in Shallow Sea[J]. Acta Armamentarii, 2018, 39(9): 1786-1794.

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第39卷
第9期2018 年9月兵工学报ACTA
ARMAMENTARIIVol.39No.9Sep.2018