THORSTEN W. BECKER
Department of Earth Sciences
University of Southern California
Los Angeles

Seismic tomography

 Death Valley gravity survey, 2005
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downloads: [software] [tomography] [visualizations] [global maps]

  • A comparison of global mantle tomography models

    You can find the additional online material and tomographic model expansions from Becker & Boschi (2002), a comparison of tomographic models, on the Becker & Boschi: Correlations between tomographic models page. For example: The software for converting global tomography models from the common format global tomography model files from spherical harmonics to spatial GMT/Netcdf grids can be found on the software page, under "shansyn". SEATREE can compute mantle flow and the geoid from these files.

    An updated version that compares more recently developed models is in the works.

  • SMEAN tomography "model"

    SMEAN is a composite global tomography model constructed by Becker & Boschi (2002) by averaging three existing, similar S wave models (Grand, Scripps, and S20RTS) in an attempt to isolate robust shear wave anomaly features for geodynamic interpretation. SMEAN was found to outperform other models with respect to predicting geophysical observables such as the geoid (Steinberger & Calderwood, 2006), and leads to the highest correlations of slow anomalies with inferred lower mantle plume locations (Boschi et al., 2008). SMEAN can be downloaded in the of Becker & Boschi (2002), or expanded into GMT/Netcdf grds.

  • SEATREE modules

    • hc can compute the geoid and mantle flow from the spherical harmonics format used on by shansyn and on our tomography repository.
    • larry is a 2-D, global surface wave phase velocity tomography tool
    • syn2d is a 2-D, synthetic tomography teaching tool

  • Tomography related publications

    • Foley, B. and Becker, T. W.: Generation of plate-like behavior and mantle heterogeneity from a spherical, visco-plastic convection model. In press at G-Cubed, 2009. (PDF)
    • Qin, Y., Capdeville, Y., Montagner, J.-P., Boschi, L., and Becker, T. W.: Reliability of mantle tomography models assessed by spectral-element simulation. Geophys. J. Int., 177, 125-144, 2009. (PDF)
    • Boschi, L., Becker, T. W., and Steinberger, B.: On the statistical significance of correlations between synthetic mantle plumes and tomographic models. Physics Earth Planet. Int., 260, 230-238, 2008. (PDF)
    • Boschi, L., T. W. Becker, and B. Steinberger, Mantle plumes: Dynamic models and seismic images, Geochem. Geophys. Geosyst., 8, Q10006, doi:10.1029/2007GC001733, 2007. (PDF)
    • Boschi, L., Becker, T. W., Soldati, G., and Dziewonski, A. M.: On the relevance of Born theory in global seismic tomography. Geophys. Res. Lett., 33, L06302, doi:10.1029/2005GL025063, 2006. (PDF).
    • Becker, T. W. and Boschi, L.: A comparison of tomographic and geodynamic mantle models, Geochemistry, Geophysics, Geosystems, 3, 2001GC000168, 2002. (PDF)
[news] [research] [publications] [group] [CV] [teaching] [downloads] [contact] [misc]
downloads: [software] [tomography] [visualizations] [global maps]
Updated: November 17, 2009. (thorstinski at gmail dot com)