The present study is concerned with the variational principle and plane wave propagation in double porous thermoelastic infinite medium. Lord-Shulman theory [2] of thermoelasticity with one relaxation time has been used to investigate the problem. It is found that for two dimensional model, there exists four coupled longitudinal waves namely longitudinal wave (P), longitudinal thermal wave (T),...

in this paper, a new algorithm for studying elastic wave propagation in the phononic crystals is presented. at first, the displacement-based forms of elastic wave equations are derived and then the forms are discretized using finite difference method. so the new algorithm is called the displacement-based finite difference time domain (dbfdtd). three numerical examples are computed with this met...

among different discretization approaches, finite difference method (fdm) is widely used for acoustic and elastic full-wave form modeling. an inevitable deficit of the technique, however, is its sever requirement to computational resources. a promising solution is parallelization, where the problem is broken into several segments, and the calculations are distributed over different processors. ...

Spaceborne synthetic aperture radar (SAR) is still the only instrument providing directional ocean wave information on a global and continuous basis. Different retrieval schemes for the derivation of two-dimensional ocean wave spectra Fk from SAR data have been developed (Krogstad, 1994; Hasselmann et al., 1996; Mastenbroek, 2000; Dowd, 2001; Johnson et al., 2003). The potential of the data for...

− Understanding the electromagnetic interactions with sea spray is of interest for many applications such as satellite or terrestrial communications, remote sensing systems for surveillance and meteorology. The water droplets in spray are a key factor in the energy transfer between the atmosphere and the ocean, which can help the wind speed retrieval algorithms for the global climate models. Fu...

The theoretical studies conducted mainly by the author are reviewed on (1) derivation of arbitrary order moment equations and solutions of some equations, (2) scattering by many particles and the effective medium constant of random medium, (3) scattering by a conducting body in random media and (4) spatially partially-coherent wave scattering, with application to satellite communications, artif...

Internal solitary waves (ISWs) in the NE South China Sea (SCS) are tidally generated at the Luzon Strait. Their propagation, evolution, and dissipation processes involve numerous issues still poorly understood. Here, a novel method of seismic oceanography capable of capturing oceanic finescale structures is used to study ISWs in the slope region of the NE SCS. Near-simultaneous observations of ...