Visualization of whole mantle propagation of seismic shear energy using normal mode summation |
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| Authors: | Michael E Wysession Patrick J Shore |
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| Institution: | (1) Department of Earth and Planetary Sciences, Washington University, St. Louis, Missouri, USA |
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| 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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| Keywords: | Wave propagation seismic waves shear waves computer graphic visualization mantle structure earthquakes |
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