Measurement of acoustic particle motion in shallow water and its application to geoacoustic inversion
- Title
- Measurement of acoustic particle motion in shallow water and its application to geoacoustic inversion
- Author
- 최지웅
- Issue Date
- 2016-01
- Publisher
- Acoustical Society of America
- Citation
- Journal of the Acoustical Society of America, v. 139, NO. 1, Page. 311-319
- 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.
- URI
- https://asa.scitation.org/doi/10.1121/1.4939492https://repository.hanyang.ac.kr/handle/20.500.11754/184212
- ISSN
- 0001-4966;1520-8524
- DOI
- 10.1121/1.4939492
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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