Summary
SPani (Tesoniero et al., 2015) is a joint model of radially anisotropic P- and S-velocity variation of the whole mantle based on the inversion of fundamental Rayleigh and Love surface waves up to the sixth overtone and major P- and S-body wave phases.
Quicklinks
Description
| Name | SPani |
| Title | A global joint model of radially anisotropic P- and S-wave velocity heterogeneity |
| Type | 3-D Tomography Earth Model |
| Sub Type | Compressional and Shear velocity variations with respect to PREM, absolute compressional and shear wave speed (km/s), radial compressional and shear wave anisotropy. |
| Year | 2015 |
| Short Description | The model is based on a ray-theoretical JWKB approximation, and account for the non-linear effects of lateral variation on the crust as in Boschi & Ekström, 2002 and references therein. We invert possibly the largest dataset of seismic phases. The model is parameterized in voxels and layers (5×5 degrees cells and 28 vertical layers). Model parameters are dlnvph, dlnvpv, dlnvsh, dlnvsv.The inversion scheme incorporates an extra regularization term in the form of isotropic S/P velocity variation. |
| Authors: | |
| Andrea Tesoniero | |
| Department of Geosciences and Natural Resource Management | |
| University of Copenhagen | |
| Copenhagen, Denmark | |
| Ludwig Auer | |
| Institut für Geophysik, Eidgenössisch Technische Hochschule | |
| Zürich, Switzerland | |
| Lapo Boschi | |
| Sorbonne Universités, UPMC Univ Paris 06 | |
| Institut des Sciences de la Terre Paris (iSTeP) | |
| Paris, France | |
| Fabio Cammarano | |
| Department of Geosciences and Natural Resource Management | |
| University of Copenhagen | |
| Copenhagen, Denmark | |
| Previous Model | |
| Reference Model | PREM |
| Model Download | |
| The above model expressed as compressional and shear velocity variations with respect to the reference model, absolute shear and compressional velocity in km/s and radial Vp (φ) and Vs (ξ) anisotropic parameters: spani.nc (see metadata ), is the netCDF file for the model |
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| Original Model Repository | https://github.com/atesoniero/SPani |
| Depth Coverage | From 50km to 2891km. |
| Area | Global |
| Data Set Description | [Ekström, 2011, Visser et al., 2008] for fundamental and high overtones respectively, and [Antolik et al., 2003, Ritsema and van Heijst, 2002, Ritsema et al., 2011] for direct P body wave phases, multiple bouncing P phases and and major S body wave phases respectively |
| Supplemental Information | The supplemental information page contains reference tables with the seismic dataset and results of several resolution tests. |
Citations and DOIs
To cite the original work behind this Earth model:
- Tesoniero, A., L. Auer, L. Boschi, and F. Cammarano (2015), Hydration of marginal basins and compositional variations within the continental lithospheric mantle inferred from a new global model of shear and compressional velocity, J. Geophys. Res. Solid Earth, 120, https://doi.org/10.1002/2015JB012026.
To cite IRIS DMC Data Products effort:
- Trabant, C., A. R. Hutko, M. Bahavar, R. Karstens, T. Ahern, and R. Aster (2012), Data Products at the IRIS DMC: Stepping Stones for Research and Other Applications, Seismological Research Letters, 83(5), 846–854, https://doi.org/10.1785/0220120032.
DOI for this EMC webpage:
References
- Auer, L., L. Boschi, T. W. Becker, T. Nissen-Meyer, and D. Giardini (2014), Savani: A variable resolution whole-mantle model of anisotropic shear velocity variations based on multiple data sets, J. Geophys. Res. Solid Earth, 119, 3006–3034, https://doi.org/10.1002/2013JB010773.
- Antolik, M., Gu, Y. J., Ekström, G., and Dziewonski, A. M. (2003). J362D28: a new joint model of compressional and shear velocity in the Earth’s mantle. Geophysical Journal International, 153(2):443-466.
- Boschi, L., and G. Ekström, New images of the Earth’s upper mantle from measurements of surface wave phase velocity anomalies, J. Geophys. Res., 107(B4), https://doi.org/10.1029/2000JB000059, 2002.
- Ekström, G. (2011). A global model of Love and Rayleigh surface wave dispersion and anisotropy, 25-250 s. Geophysical Journal International, 187(3):1668-1686.
- Ritsema, J., Deuss, A., van Heijst, J., and J.H., W. (2011). S40RTS: a degree-40 shear-velocity model for the mantle from new Rayleigh wave dispersion, tele-
seismic traveltime and normal-mode splitting function measurements. Geophysical Journal International, 184(3):1223-1236. - Ritsema, J. and van Heijst, H. J. (2002). Constraints on the correlation of P- and S-wave velocity heterogeneity in the mantle from P, PP, PPP and PKPab traveltimes. Geophysical Journal International, 149(2):482-489.
- Tesoniero, A., Auer, L., Boschi, L., and Cammarano, F. (2015). Hydration of marginal basins and compositional variations within the continental lithospheric mantle inferred from a new global model of shear and compressional velocity. Journal of Geophysical Research: Solid Earth.
- Visser, K., Trampert, J., and Kennett, B. L. N. (2008). Global anisotropic phase velocity maps for higher mode Love and Rayleigh waves. Geophysical Journal International, 172(3):1016-1032.
Credits
Model provided by Andrea Tesoniero
Timeline
- 2015-11-09
- online
