Abstract
Correct representation of seismic waveforms propagating through the mantle from a 600 km deep earthquake is presented using graphic interpolation between synthetic seismograms computed across a grid of mantle depths and distances. All torsional normal modes with periods above 12 s are summed to create 72,846 seismograms at depths between the surface and the core-mantle boundary. The resulting time snapshots show the manner by which seismic shear energy propagates around the core away from the source.
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Wysession, M.E., Shore, P.J. Visualization of whole mantle propagation of seismic shear energy using normal mode summation. PAGEOPH 142, 295–310 (1994). https://doi.org/10.1007/BF00879305
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DOI: https://doi.org/10.1007/BF00879305