TY - JOUR

T1 - The solution of Cagniard's problem for an SH line source in elastic and anelastic media, calculated using ω - k integrals

AU - Abramovici, F.

AU - Le, L. H.T.

AU - Kanasewich, E. R.

PY - 1990

Y1 - 1990

N2 - Computations have been performed using an improper ω - k double integral representing the response to an SH pulse generated by a line source, acting in a model consisting of 2 homogeneous isotropic elastic or linear viscoelastic half-spaces separated by a plane boundary. The advantage of this method is its universality: complete seismograms for relevant time and frequency windows are produced by the program. The calculated synthetic seismograms are accurate enough even for a small number of frequencies and compare well with exact results for elastic models obtained using Cagniard's method. For the simple models of 2 anelastic or 1 elastic and 1 anelastic half-space in welded contact considered here, all the arrivals that are predicted by elasticity theory, including the incident, reflected, head, transmitted, and evanescent waves, are present. -from Authors

AB - Computations have been performed using an improper ω - k double integral representing the response to an SH pulse generated by a line source, acting in a model consisting of 2 homogeneous isotropic elastic or linear viscoelastic half-spaces separated by a plane boundary. The advantage of this method is its universality: complete seismograms for relevant time and frequency windows are produced by the program. The calculated synthetic seismograms are accurate enough even for a small number of frequencies and compare well with exact results for elastic models obtained using Cagniard's method. For the simple models of 2 anelastic or 1 elastic and 1 anelastic half-space in welded contact considered here, all the arrivals that are predicted by elasticity theory, including the incident, reflected, head, transmitted, and evanescent waves, are present. -from Authors

UR - http://www.scopus.com/inward/record.url?scp=0025645232&partnerID=8YFLogxK

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AN - SCOPUS:0025645232

SN - 0037-1106

VL - 80

SP - 1297

EP - 1310

JO - Bulletin of the Seismological Society of America

JF - Bulletin of the Seismological Society of America

IS - 5

ER -