The aim of the present paper is to investigate the surface waves in a non-homogeneous, isotropic, visco-elastic solid medium of nth order including time rate of strain. The theory of generalized surface waves has firstly been developed and then it has been employed to investigate particular cases of waves, viz., Stonely and Rayleigh, Love type. The wave velocity equations have been obtained for...

S U M M A R Y We perform a systematic survey of triggered deep ‘non-volcanic’ tremor beneath the Central Range (CR) in Taiwan for 45 teleseismic earthquakes from 1998 to 2009 with Mw ≥ 7.5 and epicentral distance≥1000 km to the broad-band station TPUB. Triggered tremors are visually identified as bursts of high-frequency (2–8 Hz), non-impulsive and long-duration seismic energy that are coherent...

Love wave sensors have been widely used for sensing applications. In this work, we introduce the theoretical analysis of the monolayer and double-layer waveguide Love wave sensors. The velocity, particle displacement and energy distribution of Love waves were analyzed. Using the variations of the energy repartition, the sensitivity coefficients of Love wave sensors were calculated. To achieve a...

The present paper studies the possibility of propagation of torsional surface waves in an inhomogeneous anisotropic layer lying between two heterogeneous half-spaces (upper and lower half-space). Both the half-spaces are assumed to be under compressive initial stress. The study reveals that under the assumed conditions, a torsional surface wave propagates in the medium. The dispersion relation ...

[1] We perform a systematic survey of triggered tremor along the San Andreas Fault in central California for the 31 teleseismic earthquakes with Mw 7.5 since 2001. We identify 10 teleseismic events associated with clear triggered tremor. About 52% of the tremor is concentrated south of Parkfield near Cholame, where ambient tremor has been identified previously, and the rest is widely distribute...

Proliferative diabetic retinopathy (PDR) is a leading cause of visual loss in adults in industrialized countries. PDR patients with light perception (LP) or hand movement (HM) acuity due to severe vitreous hemorrhage require vitreous surgery. The purpose of this study was to determine whether the visual acuity of PDR patients with LP or HM can be graded into finer steps with the Low Vision Eval...

Abstract. In this paper, we present a semiclassical description of surface waves or modes in an elastic medium near a boundary, in spatial dimension three. The medium is assumed to be essentially stratified near the boundary at some scale comparable to the wave length. Such a medium can also be thought of as a surficial layer (which can be thick) overlying a half space. The analysis is based on...

The first applications of acoustic devices to chemical detection were proposed by Sauerbray in 1959 [1]. For application in liquid media, mainly quartz microbalance (QCM) sensors have been investigated. Recent works on Love waves devices for gas detection have demonstrated definitely their superiority, in particular in term of mass loading effect sensitivity [2]. As the shear horizontal polariz...