Estimation of a sediment attenuation coefficient using mid-frequency bottom-interacting signals in Jinhae Bay, Southeast Korea SCIE SCOPUS

Cited 0 time in WEB OF SCIENCE Cited 0 time in Scopus
Title
Estimation of a sediment attenuation coefficient using mid-frequency bottom-interacting signals in Jinhae Bay, Southeast Korea
Author(s)
Kwon, Hyuckjong; Kim, Byoung-Nam; Choi, Jee Woong
KIOST Author(s)
Kim, Byoung Nam(김병남)
Alternative Author(s)
권혁종; 김병남
Publication Year
2022-06
Abstract
The inversion results of geoacoustic parameters using bottom-interacting signals in Jinhae Bay, South Korea, were presented in March 2019 by Kwon, Choi, Ryang, Son, and Jung [J. Acoust. Soc. Am. 145, 1205-1211 (2019)]. At site 1 in this study area, where the surficial sediment was dominated by mud, bottom-loss estimates were typical of losses in sediment with a sound speed lower than that of the water column. In this case, because most of the energy incident on the bottom at the angle of intromission is transmitted into the sediment, scattering may dominate the bottom-path energy, which can lead to an underestimate of bottom loss and an overestimate of the sediment attenuation coefficient. Here, we attempt to provide an accurate estimate of the sediment attenuation coefficient by comparing the difference in amplitudes between the bottom-reflected and sub-bottom-reflected signals over a frequency band of several kHz. To verify the inversion results, measurements of sediment attenuation at the site were also taken by repeatedly transmitting and receiving continuous acoustic waves of 120-180 kHz using four stake transducers embedded in the sediment. The inversion results are in reasonable agreement with the sediment attenuation coefficients measured in situ. (C) 2022 Acoustical Society of America.
ISSN
0001-4966
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/43073
DOI
10.1121/10.0011805
Bibliographic Citation
Journal of the Acoustical Society of America, v.151, no.6, pp.4291 - 4299, 2022
Publisher
Acoustical Society of America
Type
Article
Language
English
Document Type
Article
Publisher
Acoustical Society of America
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse