To improve our understanding of Rayleigh wave generation and propagation in oceans, the effects of the presence of an island on the Rayleigh wave features are simulated. The analysis of results reveals Rayleigh wave generation in ocean near the island. In the water column, a decrease of amplitude in the vertical component and an increase of amplitude in the radial component of Rayleigh wave wit...

Spectral Analysis of Surface Waves (SASW) has been used for two decades to determine the stiffness profile of soils. The application of this technique is currently evaluated for inspecting subsurface damage in concrete structures in the 100 kHz frequency range. Accurate measurements of phase velocity and attenuation require an appropriate source to efficiently generate wideband Rayleigh waves. ...

RAYLEIGH waves from the Solomon Islands earthquake of July 29, 1950, recorded at Honolulu, Berkeley, Tucson, and Palisades are analyzed. Both the direct waves and those propagated through the Antipodes were observed for all stations except Honolulu. Application of a correction for land travel results in a dispersion curve for the oceanic portion of the path. It is found that the observed disper...

The existence of surface elastic waves at a mechanically free surface of granular phononic crystals is studied. The granular phononic crystals are made of spherical particles distributed periodically on a simple cubic lattice. It is assumed that the particles are interacting by means of normal, shear, and bending contact rigidities. First, Rayleigh-type surface acoustic waves, where the displac...

Extensions of Rayleigh–Bloch waves above the cutoff frequency are studied via discrete spectrum a transfer operator for channel containing single cylinder with quasi-periodic side-wall conditions. Above cutoff, wavenumber becomes complex valued and an additional appears. For small- to intermediate-radius values, extended shown connect Neumann Dirichlet trapped modes before embedding in continuo...