Accurate numerical methods for solving the elastic equation of motion for arbitrary source locations

Details Accurate numerical methods for solving the elastic equation of motion for arbitrary source locations Accurate numerical methods for solving the elastic equation of motion for arbitrary source locations

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003geoji.154..852t&link_type=abstract

Geophysical Journal International, Volume 154, Issue 3, pp. 852-866.

Physics

5

Scientific paper

In our previous studies we derived a general criterion for optimally accurate numerical operators for computing synthetic seismograms. In this paper we extend our results by deriving source representations that are `tuned' to match the errors of the numerical operators, so that optimally accurate synthetic seismograms are obtained. The same accuracy can be obtained whether the sources are at nodes of the numerical grid or between nodes. The accuracy of the synthetic seismograms is confirmed by numerical experiments. These results should facilitate inversion of seismic waveform data for 3-D Earth structure and earthquake source parameters.

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