Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1164
DC Field | Value | Language |
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dc.contributor.authorall | Soldati, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Boschi, L.; E.T.H. Z¨urich, Switzerland | en |
dc.contributor.authorall | Piersanti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.date.accessioned | 2006-06-05T07:04:54Z | en |
dc.date.available | 2006-06-05T07:04:54Z | en |
dc.date.issued | 2006-06-05 | - |
dc.identifier.uri | http://hdl.handle.net/2122/1164 | en |
dc.description.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. | en |
dc.format.extent | 616453 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en_US |
dc.relation.ispartofseries | 4-5/49(2006) | en_US |
dc.subject | Numerical inverse theory | en |
dc.subject | seismology | en |
dc.subject | global tomography | en |
dc.subject | seismic resolution | en |
dc.subject | Earth’s mantle | en |
dc.title | Global seismic tomography and modern parallel computers | en_US |
dc.type | article | en |
dc.description.status | Published | en_US |
dc.type.QualityControl | Peer-reviewed | en_US |
dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.06. Seismic methods | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy | en |
dc.relation.references | Antolik, M., Gu, Y. J., Ekstr¨om, G. & Dziewonski, A. M., 2003. J362D28: a new joint model of compressional and shear velocity in the mantle, Geophys. J. Int., 153, 443–466. Boschi, L., 2003. Measures of resolution in global body wave tomography, Geophys. Res. Lett., 30, NO. 19, 1978, doi:10.1029/2003GL018222. Boschi, L. & Dziewonski, A. M., 1999. “High” and “low” resolution images of the Earth’s mantle - Implications of different approaches to tomographic modeling, J. geophys. Res., 104, 25,567–25,594. Boschi, L., T. W. Becker, G. Soldati, and A. M. Dziewonski, 2006. On the relevance of Born theory in global seismic tomography, Geophys. Res. Lett., 33, L06302, doi:10.1029/2005GL025063. Bunge, H.-P. & Tromp, J., 2003. Supercomputing moves to universities and makes possible new ways to organize computational research, EOS, Trans. Am. geophys. Un., 84, 30–33. Dziewonski, A. M., 1984. Mapping the lower mantle: determination of lateral heterogeneity in P velocity up to degree and order 6, J. geophys. Res., 89, 5929–5952. Grand, S. P., 1994. Mantle shear structure beneath the Americas and surrounding oceans, J. geophys. Res., 99, 11,591–11,621. Hager, B. H., & R. W. Clayton, 1989. Constraints on the structure of mantle convection using seismic observation, flow models, and the geoid, in Mantle Convection-Plate Tectonics and Global Dynamics, edited by W. R. Peltier, pp. 657–763, Gordon and Breach, Newark, N. J. Hansen, P. C., 1992. Analysis of discrete ill-posed problems by means of the L-curve, SIAM review, 34, 561–580. Inoue, H., Fukao, Y., Tanabe, K. & Y. Ogata, 1990. Whole mantle P wave travel time tomography, Phys. Earth planet. Inter., 59, 294–328. L´evˆeque, J. J., L. Rivera, & G. Wittlinger, 1993. On the use of the checkerboard test to assess the resolution of tomographic inversions, Geophys. J. Int., 115, 313–318. Menke, W., 1989. Geophysical Data Analysis: Discrete Inverse Theory, rev. ed., Academic, San Diego. Minkoff, S. E., 1996. A computationally feasible approximate resolution matrix for seismic inverse problems, Geophys. J. Int., 126, 345–359. Nolet, G., 1985. Solving or resolving inadequate and noisy tomographic systems, J. Comput. Phys., 61, 463–482. Nolet, G., R. Montelli, & J. Virieux, 1999. Explicit, approximate expressions for the resolution and a posteriori covariance of massive tomographic systems, Geophys. J. Int., 138, 36–44. Nolet, G., R. Montelli, & J. Virieux, 2001. Reply to comment by Z. S. Yao, R. G. Roberts and A. Tryggvason on “Explicit, approximate expressions for the resolution and a posteriori covariance of massive tomographic systems”, Geophys. J. Int., 145, 315. Paige, C. C., & M. A. Saunders, 1982. LSQR: an algorithm for sparse linear equations and sparse least squares, ACM Trans. Math. Soft., 8, 43–71. Press, W. H., Teukolsky, S. A., Vetterling, W. T. & B. P. Flannery, 1994. Numerical Recipes in FORTRAN, Cambridge University Press, U. K. Soldati, G. & L. Boschi, 2004. Whole Earth tomographic models: a resolution analysis, EOS, Trans. Am. geophys. Un., 85(47), Fall Meet. Suppl. Su, W.-J., R. L. Woodward & A. M. Dziewonski, 1994. Degree-12 Model of Shear Velocity Heterogeneity in the Mantle, J. geophys. Res., 99, 4945– 4980. Tarantola, A., 2005. Inverse Problem Theory and Model Parameter Estimation, SIAM, Philadelphia. Trefethen, L. N. & D. Bau III, 1997. Numerical Linear Algebra, Soc. for Ind. and Appl. Math., Philadelphia, Penn. van der Hilst, R. D., S. Widiyantoro & E. R. Engdahl, 1997. Evidence for deep mantle circulation from global tomography, Nature, 386, 578–584. Vasco, D. W., L. R. Johnson & O. Marques, 2003. Resolution, uncertainty, and whole-Earth tomography, J. geophys. Res., 108, 2022, doi:10.1029/2001JB000412. Wessel, P. & W. H. F. Smith, 1991. Free software helps map and display data. EOS, Trans. Am. geophys. Un., 72, 445–446. Woodhouse J. H. & A. M. Dziewonski, 1984. Mapping the upper mantle: three-dimensional modeling of Earth structure by inversion of seismic waveforms, J. geophys. Res., 89, 5953–5986. Yao, Z. S., R. G. Roberts & A. Tryggvason, 1999. Calculating resolution and covariance matrices for seismic tomography with the LSQR method, Geophys. J. Int., 138, 886–894. Yao, Z. S., R. G. Roberts, & A. Tryggvason, 2001. Comment on “Explicit, approximate expressions for the resolution and a posteriori covariance of massive tomographic systems” by G. Nolet, R. Montelli and J. Virieux, Geophys. J. Int., 145, 307–314. Zhang, J. & G. A. McMehan, 1995. Estimation of resolution and covariance for large matrix inversions, Geophys. J. Int., 121, 409–426. | en |
dc.description.obiettivoSpecifico | 8T. Sismologia in tempo reale | en_US |
dc.description.journalType | JCR Journal | en_US |
dc.description.fulltext | open | en |
dc.contributor.author | Soldati, G. | - |
dc.contributor.author | Boschi, L. | - |
dc.contributor.author | Piersanti, A. | - |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en_US |
dc.contributor.department | E.T.H. Z¨urich, Switzerland | en_US |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en_US |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | Università degli Studi di Padova | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.orcid | 0000-0002-9048-201X | - |
crisitem.author.orcid | 0000-0002-1814-5721 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Annals of Geophysics Article published / in press Manuscripts |
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File | Description | Size | Format | |
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Soldati post.pdf | 602 kB | Adobe PDF | View/Open | |
Pub_paper.pdf | 555.03 kB | Adobe PDF | View/Open |
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