Study of acoustic characteristics of gravel sediment using the BICSQS model

Title
Study of acoustic characteristics of gravel sediment using the BICSQS model
Author(s)
이동완; 정섬규; 신동혁; 최복경; 김봉채; 이용국; 김병남
KIOST Author(s)
Shin, Dong Hyeok(신동혁)Choi, Bok Kyoung(최복경)Kim, Byoung Nam(김병남)
Publication Year
2012-12-05
Abstract
Acoustic properties of gravel sediment are studied.In this study, The phase velocity and attenuation of gravel sediment are investigated using experimental measurement and the BICSQS model. Biot’s theory is well known for explain the phase velocity and attenuation of porous medium like ocean sediment. But the phase velocity and attenuation of gravel sediment are not well explained by Biot’s theory. So we tried to explain these acoustic characteristics by usingBICSQS model. For this purpose, we compared with laboratory experimental data and numericalcomputation model. The laboratory experiment is carried out at frequency range 40-150 kHz in freshdegased water. To explain these experimental results, we applied the BICSQS model using parameters of gravel sediment which are actually measured. Through these results, we can expect tendency of phase velocity and attenuation in frequency domain.hase velocity and attenuation of porous medium like ocean sediment. But the phase velocity and attenuation of gravel sediment are not well explained by Biot’s theory. So we tried to explain these acoustic characteristics by usingBICSQS model. For this purpose, we compared with laboratory experimental data and numericalcomputation model. The laboratory experiment is carried out at frequency range 40-150 kHz in freshdegased water. To explain these experimental results, we applied the BICSQS model using parameters of gravel sediment which are actually measured. Through these results, we can expect tendency of phase velocity and attenuation in frequency domain.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/27254
Bibliographic Citation
2012년도 한국음향학회 추계학술발표대회, pp.15 - 17, 2012
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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