Acoustic Characteristics of Subharmonics Generated from Water-Saturated Sandy Sediment

Title
Acoustic Characteristics of Subharmonics Generated from Water-Saturated Sandy Sediment
Author(s)
김병남; 이강일; 윤석왕; 최복경
KIOST Author(s)
Kim, Byoung Nam(김병남)Choi, Bok Kyoung(최복경)
Publication Year
2003-11-01
Abstract
Nonlinear acoustic characteristics of sediments are veryimportant to understand nonlinear phenomena of marine gassysediments. Acoustic characteristics of subharmonics generatedfrom water-saturated sandy sediment were investigated. Whena harmonic sound wave with high-amplitude was incident onthe water-saturated sandy sediment, subharmonic componentsof incident wave were generated due to nonlinearity of water-saturatedsandy sediment. The level of generated firstsubharmonic sound wave was about 23 dB greater than thebackground noise level at fundamental frequency withmaximum incident pressure. The level of subharmonic soundwaves was dependent on the amplitude of the harmonics aswell as of the fundamental.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32124
Bibliographic Citation
한국음향학회 학술발표대회 논문집, pp.371 - 372, 2003
Publisher
한국음향학회
Type
Conference
Language
English
Publisher
한국음향학회
Related Researcher
Research Interests

Underwater Acoustics,Bubble Acoustics,Marine Defense & Safety,수중음향,기포음향,해양방위·안전

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