Resonant interaction of acoustic waves with subaqueous bedforms: Sand dunes in the South China Sea

被引：4

作者：

Chiu, Linus Y. S. ^{[1
]}

Chang, Andrea Y. Y. ^{[2
]}

Reeder, D. Benjamin ^{[3
]}

机构：

[1] Natl Sun Yat Sen Univ, Inst Undersea Technol, Kaohsiung 80424, Taiwan

[2] Natl Sun Yat Sen Univ, Asia Pacifc Ocean Res Ctr, Kaohsiung 80424, Taiwan

[3] Naval Postgrad Sch, Dept Oceanog, Monterey, CA 93943 USA

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2015年 / 138卷 / 06期

关键词：

MODE; PROPAGATION; SHELFBREAK;

D O I：

10.1121/1.4937746

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The large subaqueous sand dunes in the South China Sea are expected to produce the coupling of energy between acoustic normal modes. In this letter, resonant interaction between acoustic propagating modes and subaqueous bedforms are numerically investigated as a function of bedform wavelength, acoustic frequency and bedform packet length. The results demonstrate that bedform wavelength impacts acoustic mode coupling behavior, with the principal transfer of energy occurring between acoustic modes whose eigenvalue difference is equal to the peak value in the bedform wavenumber spectrum. The observed effect of wavelength is greater than that of acoustic frequency and bedform packet length. (C) 2015 Acoustical Society of America

引用

页码：EL515 / EL521

页数：7

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