Transactions American Geophysical Union · 1956 · 35 citations · 6 references
Natural SciencesEarth SciencesGeophysicsCrustal GeophysicsEarthquake PhysicsSeismologyCrustal SeismologyEarthquake Ground MotionMantle SeismologySeismic Wave PropagationWave DispersionCrustal ArchitectureEarthquake SeismologyGroup Velocity EstimationGroup-velocity DispersionSeismic Wave DispersionSeismic Wave Propagation In The CrustSeismic Wave Propagation In The MantleShear Velocity
A composite Rayleigh wave dispersion curve obtained from earthquake seismograms is presented for the period range 10‐500 sec. For periods greater than 75 sec the dispersion is primarily influenced by the shear velocity gradient in the mantle. For periods less than 75 sec the effect of the crustal layer is most important. Brief discussions of the spectrum of the initial impulse and stationary values of group velocity, as they influence the character of seismograms, are given.
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