Acoustic ducting, reflection, refraction, and dispersion by curved nonlinear internal waves in shallow water

JF Lynch, YT Lin, TF Duda… - IEEE Journal of Oceanic …, 2010 - ieeexplore.ieee.org
Nonlinear internal waves in shallow water have been shown to be effective ducts of acoustic
energy, through theory, numerical modeling, and experiment. To date, most work on such …

[HTML][HTML] Multiscale multiphysics data-informed modeling for three-dimensional ocean acoustic simulation and prediction

TF Duda, YT Lin, AE Newhall, KR Helfrich… - The Journal of the …, 2019 - pubs.aip.org
Three-dimensional (3D) underwater sound field computations have been used for a few
decades to understand sound propagation effects above sloped seabeds and in areas with …

Horizontal coherence of low-frequency fixed-path sound in a continental shelf region with internal-wave activity

TF Duda, JM Collis, YT Lin, AE Newhall… - The Journal of the …, 2012 - pubs.aip.org
Sound at 85 to 450 Hz propagating in approximately 80-m depth water from fixed sources to
a joint horizontal/vertical line array (HLA/VLA) is analyzed. The data are from a continental …

Acoustic mode radiation from the termination of a truncated nonlinear internal gravity wave duct in a shallow ocean area

YT Lin, TF Duda, JF Lynch - The Journal of the Acoustical Society of …, 2009 - pubs.aip.org
Horizontal ducting of sound between short-wavelength nonlinear internal gravity waves in
coastal environments has been reported in many theoretical and experimental studies …

Using a numerical model to understand the connection between the ocean and acoustic travel-time measurements

BS Powell, CG Kerry, BD Cornuelle - The Journal of the Acoustical …, 2013 - pubs.aip.org
Measurements of acoustic ray travel-times in the ocean provide synoptic integrals of the
ocean state between source and receiver. It is known that the ray travel-time is sensitive to …

[PDF][PDF] The “integrated ocean dynamics and acoustics”(IODA) hybrid modeling effort

TF Duda, YT Lin, AE Newhall, KR Helfrich… - Proceedings of the …, 2014 - researchgate.net
Regional ocean models have long been integrated with acoustic propagation and scattering
models, including work in the 1990s by Robinson and Lee. However, the dynamics in these …

[HTML][HTML] Observation of sound focusing and defocusing due to propagating nonlinear internal waves

J Luo, M Badiey, EA Karjadi, B Katsnelson… - The Journal of the …, 2008 - pubs.aip.org
Fluctuations of the low frequency sound field in the presence of an internal solitary wave
packet during the Shallow Water'06 experiment are analyzed. Acoustic, environmental, and …

INFLUENCE OF DE-COHERENCE EFFECTS ON SONAR ARRAY GAIN: SCLAED EXPERIMENT, SIMULATIONS AND SIMPLIFIED THEORY COMPARISON

G Real, X Cristol, D Habault, JP Sessarego… - … Acoustics Conference & …, 2015 - hal.science
Our study focuses on the subject of acoustic wave propagation through spatially fluctuating
ocean. The fluctuations are here linear internal waves (LIW) and we developed an …

[HTML][HTML] Coherence length as a figure of merit in multireference near-field acoustical holography

AT Wall, MD Gardner, KL Gee… - The Journal of the …, 2012 - pubs.aip.org
Multireference partial field decomposition (PFD) can be used to generate coherent
holograms for near-field acoustical holography measurements. PFD is most successful …

Effect of the internal tide on acoustic transmission loss at midfrequencies

J Yang, D Rouseff, D Tang… - IEEE Journal of Oceanic …, 2010 - ieeexplore.ieee.org
Nonlinear internal waves are a common event on the continental shelf. The waves depress
the high-gradient region of the thermocline and thicken the surface mixed layer with …