Petascale computing and resolution in global seismic tomography

L. Boschi*, J. P. Ampuero, Daniel Peter, Paul Mai, G. Soldati, D. Giardini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)245-250
Number of pages6
JournalPhysics of the Earth and Planetary Interiors
Volume163
Issue number1-4
DOIs
StatePublished - Aug 15 2007

Keywords

  • Computational seismology
  • Finite-frequency
  • Inverse theory
  • Resolution
  • Tomography

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Geophysics
  • Physics and Astronomy (miscellaneous)
  • Space and Planetary Science

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