Data Services Products: EMC-S362ANI+M An anisotropic shear velocity model of the Earth’s mantle using normal modes, body waves, surface waves and long-period waveforms

Summary

S362ANI+M, Moulik and Ekstrom (2014), is an update to S362ANI and S362WMANI representing an anisotropic shear velocity model of the Earth’s mantle using normal modes, body waves, surface waves and long-period waveforms.

Description

Name S362ANI+M
Title A global shear velocity model of the Earth’s mantle
Type 3-D Tomography Earth Model
Sub Type Anisotropic S velocities
Year 2014
Short Description   This model is an update to S362ANI and S362WMANI representing an anisotropic shear velocity model of the Earth’s mantle using normal modes, body waves, surface waves and long-period waveforms.
Authors:
 
P. Moulik
Lamont-Doherty Earth Observatory
Columbia University
Palisades, New York, USA
 
G. Ekstrom
Lamont-Doherty Earth Observatory
Columbia University
Palisades, New York, USA
 
Previous Model S362ANI and S362WMANI
Reference Model
Model Download
 
gzip tarfile of original model files and scripts.
 
gzip tarfile of longitude-latitide-velocity files with vsh, vsv, and Voigt average in km/s evaluated on a grid of points at many depths in the mantle.
 
S362ANI+M_kmps.nc (see metadata ), is the netCDF file for the model
 
Model Homepage http://www.ldeo.columbia.edu/~moulik/Research/3D/S362ANI+M/model.html
Depth Coverage Whole Mantle (25 to 2890 km)
Areal Coverage Global (-90°/90°, -180°/180°)
 
Data SetDescription
 
S362ANI+M is an update to the earlier model S362ANI, which did not include normal-mode splitting functions in its derivation.
 

Figure [Moulik & Ekstrom, 2014] (a) Anisotropic velocity variations (vSH − vSV)/vS in S362ANI+M and SAW642ANb. Average anisotropy at each depth, as specified in < >, has been removed to eliminate the contribution from the reference models that are different in the two models. (b) Correlation between S362ANI+M and SAW642ANb calculated up to spherical harmonic degrees 2 (dashed line) and 8 (solid line). (c) Correlation between isotropic and anisotropic variations in S362ANI+M (solid line) and SAW642ANb (dashed line) calculated up to spherical harmonic degree 8. The dotted lines in (b) and© indicate the 410- and 650-km discontinuities and the shaded areas indicate correlations lower than –0.3 and higher than 0.3.

Velocity variations in S362ANI+M and SAW642ANb models.

Citations and DOIs

To cite the original work behind this Earth model:

  • Moulik, P. & Ekstrom, G., 2014. An anisotropic shear velocity model of the Earth’s mantle using normal modes, body waves, surface waves and long-period waveforms, Geophys. J. Int., 199(3), 1713-1738, doi: 10.1093/gji/ggu356.

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:

Credits

Model provided by Raj Moulik

Timeline

2014-12-01
S362ANI+M online : added S362ANI+M to EMC

Categories

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