Abstract
A realistic 2-D time-evolving ocean surface model has been combined with an existing acoustic ray-based model to simulate the effects of sea surface roughness on acoustic wave propagation in coastal regions. Rough sea surface realizations are generated and used as sea surface boundaries in the acoustic model. An approach to achieve high resolution and accurate results while maintaining computational efficiency of a ray-based model is applied. The results are then compared against a unique set of experimental data collected in 15-m water depth in Delaware Bay. These data include simultaneous environment and acoustic propagation (1-18 kHz) measurements. Modeled arrival time-angle fluctuations compare well with data and suggest that there are physical processes which need to be included to improve the model, such as bubbles and turbulence as well as 3-D scattering effects.
| Original language | English |
|---|---|
| Article number | 6104189 |
| Pages (from-to) | 112-121 |
| Number of pages | 10 |
| Journal | IEEE Journal of Oceanic Engineering |
| Volume | 37 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2012 |
| Externally published | Yes |
Funding
Manuscript received August 03, 2010; revised June 20, 2011; accepted September 09, 2011. Date of publication December 13, 2011; date of current version January 13, 2012. This work was supported by the U.S. Office of Naval Research (ONR) under Grant N00014-10-1-0396 and in part by the University of Delaware Sea Grant. Associate Editor: J. F. Lynch. E. A. Karjadi and M. Badiey are with the College of Earth, Ocean, and Environment, University of Delaware, Newark, DE 19716 USA (e-mail: [email protected]; [email protected]). J. T. Kirby is with the Center for Applied Coastal Research, University of Delaware, Newark, DE 19716 USA (e-mail: [email protected]). C. Bayındır is with the Department of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332 USA (e-mail: [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/JOE.2011.2168670
| Funders | Funder number |
|---|---|
| U.S. Office of Naval Research | |
| Office of Naval Research | N00014-10-1-0396 |
| University of Delaware |
Keywords
- Acoustic propagation
- acoustic scattering
- sea surface waves
- shallow water