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Authors: Soldati, G.* 
Boschi, L.* 
Piersanti, A.* 
Title: Global seismic tomography and modern parallel computers
Issue Date: 5-Jun-2006
Keywords: Numerical inverse theory
global tomography
seismic resolution
Earth’s mantle
Subject Classification04. Solid Earth::04.02. Exploration geophysics::04.02.06. Seismic methods 
04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy 
Abstract: A fast technological progress is providing seismic tomographers with computers of rapidly increasing speed and RAM, that are not always properly taken advantage of. Large computers with both shared-memory and distributedmemory architectures have made it possible to approach the tomographic inverse problem more accurately. For example, resolution can be quantified from the resolution matrix rather than checkerboard tests; the covariance matrix can be calculated to evaluate the propagation of errors from data to model parameters; the L-curve method can be applied to determine a range of acceptable regularization schemes. We show how these exercises can be implemented efficiently on different hardware architectures.
Appears in Collections:Manuscripts
Annals of Geophysics
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