Inventory of tomographic models
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This inventory provides large-scale tomographic models of Earth structure in 2 standardized formats.
The first one expresses model in spherical harmonic expansion, and the coefficients are presented as stated in Becker, T. W. and L. Boschi: A comparison of tomographic and geodynamic
mantle models, Geochem. Geophys. Geosyst., 3, 2001GC000168, 2002. Visualization can be done using
the shansyn software package (works on UNIX, requires Generic Mapping Tools, all open source).
Tomographic models can also be expressed by the values of Vp, Vs or other physical quantities on a 3D grid; thus, we are providing these values too, in json format. JSON is a general purpose semantic format, easy to parse in any programming environment, or even directly within the web browser (example).
Please see the JsonEuroRem format specification.
This database will serve as a repository for the collection of
literature and new models relevant in the derivation of a common
reference for the mantle and crustal structure beneath Europe.
This is an ongoing effort in collaboration with SPICE (EC-FP6 Marie Curie Research and Traning Network). Other relevant material can be found on the SPICE Planetary-scale Tomography web page.
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References
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Steinberger,
B., Slabs in the lower mantle - results of dynamic modelling compared
with tomographic images and the geoid, Phys. Earth Planet.
Inter., 118, 241-257, 2000. |
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Gu, Y. J.,
Dziewonski, A. M., Su, W.-j., and Ekström, G., Models of the
mantle shear velocity and discontinuities in the pattern of lateral
heterogeneities, J. Geophys. Res., 106, 11,169-11,199,
2001. |
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Grand, S. P., van der
Hilst, R. D., and Widiyantoro, S., Global seismic tomography; a
snapshot of convection in the Earth, GSA Today, 7, 1-7,
1997. |
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Becker, T. W. and L. Boschi: A
comparison of tomographic and geodynamic mantle models, Geochem.
Geophys. Geosyst., 3, 2001GC000168, 2002. |
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Becker, T. W. and L. Boschi: A
comparison of tomographic and geodynamic mantle models, Geochem.
Geophys. Geosyst., 3, 2001GC000168, 2002. |
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Kárason, H. and van der Hilst, R. D., Tomographic
imaging of the lowermost mantle with differential times of refracted
and diffracted core phases (PKP, Pdiff), J. Geophys. Res.,
106, 6569-6588, 2001. |
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Mégnin, C. and Romanowicz, B., The shear velocity
structure of the mantle from the inversion of body, surface, and higher
modes waveforms, Geophys. J. Int., 143, 709-728, 2000. |
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Masters, G., Bolton, H., and Laske, G., Joint seismic
tomography for p and s velocities: How pervasive are chemical anomalies
in the mantle?, EOS Trans. AGU, 80, S14, 1999. |
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Masters, G., Laske, G., Bolton, H., and Dziewonski, A. M.,
The relative behavior of shear velocity, bulk sound speed, and
compressional velocity in the mantle: implications for chemical and
thermal structure, in S.-i. Karato, A. M. Forte, R. C. Liebermann, G.
Masters, and L. Stixrude, eds., Earth's deep interior. Mineral
physics and tomography from the atomic to the global scale, volume 117
of Geophysical Monograph, pp. 63-87, American Geophysical Union,
Washington DC, 2000. |
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Masters, G., Laske, G., Bolton, H., and Dziewonski, A. M.,
The relative behavior of shear velocity, bulk sound speed, and
compressional velocity in the mantle: implications for chemical and
thermal structure, in S.-i. Karato, A. M. Forte, R. C. Liebermann, G.
Masters, and L. Stixrude, eds., Earth's deep interior. Mineral
physics and tomography from the atomic to the global scale, volume 117
of Geophysical Monograph, pp. 63-87, American Geophysical Union,
Washington DC, 2000. |
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van der Hilst, R. D., Widiyantoro, S., and Engdahl, E. R.,
Evidence of deep mantle circulation from global tomography,
Nature, 386, 578-584, 1997. |
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Boschi, L. and Dziewonski, A. M., `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,
1999. |
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Antolik, M., Ekström, G., Dziewonski, A. M., Gu, Y. J.,
Pan, J.-f., and Boschi, L., A new joint p and s velocity
model of the mantle parameterized in cubic B-splines, in 22nd
Annual DoD/DOE Seismic Research Symposium: Planning for Verification of
and Compliance with the Comprehensive Nuclear-Test-Ban Treaty (CTBT):
Proceedings, volume II, 2001. |
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Ritsema, J. and van Heijst, H. J., Seismic imaging of
structural heterogeneity in Earth's mantle: Evidence for large-scale
mantle flow, Sci. Progr., 83, 243-259, 2000. |
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Gudmundsson, O. and Sambridge, M., A regionalized upper
mantle (RUM) seismic model, J. Geophys. Res., 103,
7121-7136, 1998. |
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Ekström, G. and Dziewonski, A. M., The unique anisotropy
of the Pacific upper mantle, Nature, 394, 168-172, 1998. |
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Su, W.-j. and Dziewonski, A. M., Simultaneous inversion for
3-D variations in shear and bulk velocity in the mantle, Phys.
Earth Planet. Inter., 100, 135-156, 1997. |
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Su, W.-j. and Dziewonski, A. M., Simultaneous inversion for
3-D variations in shear and bulk velocity in the mantle, Phys.
Earth Planet. Inter., 100, 135-156, 1997. |
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Ishii, M. and Tromp, J., Even-degree lateral variations in
the earth's mantle constrained by free oscillations and the free-air
gravity anomaly, Geophys. J. Int., 145, 77-96, 2001. |
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Ishii, M. and Tromp, J., Even-degree lateral variations in
the earth's mantle constrained by free oscillations and the free-air
gravity anomaly, Geophys. J. Int., 145, 77-96, 2001. |
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About
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NERIES is an INTEGRATED INFRASTRUCTURE INITIATIVE (I3)
funded under the SIXTH FRAMEWORK PROGRAMME of the European Commission.
This is Joint Research Activity 1.
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