Petascale computing and resolution in global seismic tomography
- 作者：L. Boschi ; J.-P. Ampuero ; D. Peter ; P.M. Mai ; G. Soldati ; D. Giardini
- 关键词：Tomography ; Finite-frequency ; Resolution ; Computational seismology ; Inverse theory
- 刊名：Physics of the Earth and Planetary Interiors
- 出版年：2007
- 期刊代码：73_00319201
- 类别：ear
- 出版时间：15 August 2007
- 卷：163
- 期：1-4
- 页码：245-250
- 文件大小：1071 K
摘要
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.