The way of interpreting results of ambient vibration based techniques in the context of near surface site structure investigations very often depends on the assumptions about the nature of the wavefield. Taking into account the relative fraction of Rayleigh and Love waves on the horizontal components is important in order to improve the evaluation of H/V spectral ratios by realistic forward mod...

Surface waves from the Chinese test site of Lop Nor are analyzed using long-period and broadband stations located at regional and teleseismic distances and at different azimuths. For most azimuths, strong Love waves between 0.02 and 0.04S Hz are observed with an amplitude of up to 10 times that of the Rayleigh waves. In addition, an anomalous early Rayleigh wave train is observed at some statio...

In the present paper we study the effect of rigid boundary on the propagation of Love waves in an inhomogeneous substratum over an initially stressed half space, where the heterogeneity is both in rigidity and density. The dispersion equation of the phase velocity has been derived. It has been found that the phase velocity of Love wave is considerably influenced by the rigid boundary, inhomogen...

A mathematical model is considered to investigate the behavior of horizontally polarized shear waves (SH-waves) in fluid saturated porous medium sandwiched between heterogeneous half-spaces. Heterogeneity in the upper half-space is due to linear variation of elastic parameters, whereas quadratic variation has been considered for lower half-space. The method of separation of variables and Whitta...

We derive displacement equations for Rayleigh and Love waves in simple structural models for point sources in order to better understand source effects on their wavefields and radiation patterns. In doing so, we analytically demonstrate the existence of surface waves in these Earth models. Rayleigh and Love wave radiation patterns are found to mimic the P and SH radiation patterns, respectively...

Dispersion of Love waves is studied in a fibre-reinforced layer resting on monoclinic half-space. The wave velocity equation has been obtained for a fiber-reinforced layer resting on monoclinic half space. Shear wave velocity ratio curve for Love waves has been shown graphically for fibre reinforced material layer resting on various monoclinic half-spaces. In a similar way, shear wave velocity ...

Rayleigh and Love waves recorded on seismic-shot gathers can be used to determine the thickness and shear-wave velocity of shallow subsurface layers. After the data are transformed into the k-f domain, the dispersion curve for each of the phases can be picked from maxima on the contour plot. This dispersion curve is then inverted for the velocities and depths. Different frequencies in the dispe...

Love waves are antiplane elastic which propagate along the surface of a heterogeneous medium. Under time-harmonic regime, they governed by scalar equation Helmholtz type. We exploit invariance this governing under an in-plane arbitrary coordinate transformation to design broadband cloaks for defects. In particular, we apply elastodynamics determine anisotropic, position dependent, mechanical pr...

The radiation patterns of Love and Rayleigh waves from three nuclear explosions (Hardhat, Haymaker, and Shoal) are studied to determine the nature of the asymmetry of radiation and the mechanism of Love wave generation. From a comparative study of different explosions it is reasoned that the Love waves are generated at the source of the explosion. The source function, represented as the superim...