Petascale computing and resolution in global seismic tomography

Details Petascale computing and resolution in global seismic tomography Petascale computing and resolution in global seismic tomography

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pepi..163..245b&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 163, Issue 1-4, p. 245-250.

Physics

7

Scientific paper

Will the advent of “petascale” computers be relevant to research in global seismic tomography? We illustrate here in detail two possible consequences of the expected leap in computing capability. First, being able to identify larger sets of differently regularized/parameterized solutions in shorter times will allow to evaluate their relative quality by more accurate statistical criteria than in the past. Second, it will become possible to compile large databases of sensitivity kernels, and update them efficiently in a non-linear inversion while iterating towards an optimal solution. We quantify the expected computational cost of the above endeavors, as a function of model resolution, and of the highest considered seismic-wave frequency.

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