Measurement of acoustic particle motion in shallow water and its application to geoacoustic inversion
- Authors
- Dall'Osto, David R.; Choi, Jee Woong; Dahl, Peter H.
- Issue Date
- Jan-2016
- Publisher
- Acoustical Society of America
- Citation
- Journal of the Acoustical Society of America, v.139, no.1, pp.311 - 319
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of the Acoustical Society of America
- Volume
- 139
- Number
- 1
- Start Page
- 311
- End Page
- 319
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/14661
- DOI
- 10.1121/1.4939492
- ISSN
- 0001-4966
- Abstract
- Within an underwater acoustic waveguide, the interference among multipath arrivals causes a phase difference in orthogonal components of the particle velocity. When two components of the particle velocity are not in phase, the fluid particles follow an elliptical trajectory. This property of the acoustic field can be readily detected by a vector sensor. A non-dimensional vector quantity, the degree of circularity, is used to quantify how much the trajectory resembles a circle. In this paper, vector sensor measurements collected during the 2013 Target and Reverberation Experiment are used to demonstrate the effect of multipath interference on the degree of circularity. Finally, geoacoustic properties representing the sandy sediment at the experimental site are inverted by minimization of a cost function, which quantifies the deviation between the measured and modeled degree of circularity. (C) 2016 Acoustical Society of America.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF MARINE SCIENCE AND CONVERGENCE ENGINEERING > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/14661)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.