The Effects of Surface Gravity Waves on High-Frequency Acoustic Propagation in Shallow Water

Karjadi, Entin A.; Badiey, Mohsen; Kirby, James T.; Bayındır, Cihan

doi:10.1109/joe.2011.2168670

Cited by 59 publications

(50 citation statements)

References 17 publications

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“…The implemented scheme is a spectral scheme with a 4th order Runge-Kutta time integrator as discussed in Bayindir 21 and Karjadi et al 22 For the time integration by a 4th order Runge-Kutta scheme, we first rewrite the Equation (18) as…”

mentioning

confidence: 99%

A note on the cylindrical solitary waves in an electron-acoustic plasma with vortex electron distribution

Demı́ray

Bayındır

2015

Physics of Plasmas

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In the present work, we consider the propagation of nonlinear electron-acoustic non-planar waves in a plasma composed of a cold electron fluid, hot electrons obeying a trapped/vortex-like distribution, and stationary ions. The basic nonlinear equations of the above described plasma are re-examined in the cylindrical coordinates through the use reductive perturbation method in the long-wave approximation. The modified cylindrical Korteweg–de Vries equation with fractional power nonlinearity is obtained as the evolution equation. Due to the nature of nonlinearity, which is fractional, this evolution equation cannot be reduced to the conventional Korteweg–de Vries equation. An analytical solution to the evolution equation, by use of the method developed by Demiray [Appl. Math. Comput. 132, 643 (2002); Comput. Math. Appl. 60, 1747 (2010)] and a numerical solution by employing a spectral scheme are presented and the results are depicted in a figure. The numerical results reveal that both solutions are in good agreement.

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confidence: 99%

A note on the cylindrical solitary waves in an electron-acoustic plasma with vortex electron distribution

Demı́ray

Bayındır

2015

Physics of Plasmas

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“…12 We note that a singlefrequency sinusoidal surface wave cannot create the extended delays shown in the data [ Figs. 1(d) and 1(e)].…”

Section: Mechanism Of the Coherent Reflectionsmentioning

confidence: 95%

Arrival-time fluctuations of coherent reflections from surface gravity water waves

Badiey¹,

Eickmeier²,

Song³

2014

The Journal of the Acoustical Society of America

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Arrival time fluctuations of coherent reflections from surface gravity waves are examined. A two-dimensional ray model with an evolving rough sea surface is used to explain the mechanism and formation of the deterministic striation patterns due to the surface reflection. Arrival time predictions from the ray model match qualitatively well with the measurements from bidirectional acoustic transmissions in a water depth of 100 m.

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“…The fluctuation in the propagation delay D ℓ (t) is obtained using (2) and then compared with the measured data based on the measured physical parameters. PDFs are compared for setups A and B in Fig.…”

Section: Fluctuation In Propagation Delaymentioning

confidence: 99%

Short‐term fading model for signals reflected by ocean surfaces in underwater acoustic communication

2015

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A short-term fading model based on rough surface theory is proposed to estimate stochastic characteristics of signals reflected by time-varying ocean surfaces in underwater acoustic channels. With this method, probability density functions of the fluctuations in the propagation delay and magnitude, and the Doppler spectral densities are provided with respect to wind speeds. After conducting several experiments and verifying them by comparing with the measurements, it is shown that the model accurately estimates the stochastic characteristics. The proposed model is valid when the transmitter and receiver locate sufficiently far away from the ocean surface.

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The Effects of Surface Gravity Waves on High-Frequency Acoustic Propagation in Shallow Water

Cited by 59 publications

References 17 publications

A note on the cylindrical solitary waves in an electron-acoustic plasma with vortex electron distribution

A note on the cylindrical solitary waves in an electron-acoustic plasma with vortex electron distribution

Arrival-time fluctuations of coherent reflections from surface gravity water waves

Short‐term fading model for signals reflected by ocean surfaces in underwater acoustic communication

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