Accession Number : AD0638148

Title :   THE DISPERSION OF SURFACE WAVES ON MULTI-LAYERED MEDIA.

Descriptive Note : Geophysical Research papers.

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Haskell,Norman A.

Report Date : AUG 1951

Pagination or Media Count : 29

Abstract : A matrix formalism developed by W. T. Thomson is used to obtain the phase velocity dispersion equations for elastic surface waves of Rayleigh and Love type on multi-layered solid media. The method is used to compute phase and group velocities of Rayleigh waves for two assumed three-layer and one two-layer model of the earth's crust in the continents. The computed group velocity curves are compared with published values of the group velocities at various frequencies of Rayleigh waves over continental paths. The scatter of the observed values is larger than the difference between the three computed curves. It is believed that not all of this scatter is due to observational errors but probably represents a real horizontal heterogeneity of the continental crusts. (Author)

Descriptors :   (*MECHANICAL WAVES, PROPAGATION), MATRICES(MATHEMATICS), EQUATIONS OF MOTION, FLUIDS, SEISMIC WAVES, RAYLEIGH SCATTERING

Subject Categories : Seismology
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE