Data Services Products: EMC-SAW642AN A global radially anisotropic mantle shear velocity model

Summary

SAW642AN, Panning and Romanowicz (2006) , is a radially anisotropic shear velocity model, parameterized in terms of isotropic S velocity (Voigt average) and the anisotropic parameter, xi (VSH2/VSV2). Model values are percent perturbation relative to the anisotropic reference model PREM500 .

Description

Name SAW642AN
Title A global radially anisotropic mantle shear velocity model
Type 3-D Tomography Earth Model
Sub Type Anisotropic S velocity
Year 2006
Short Description   SAW642AN is a radially anisotropic shear velocity model, parameterized in terms of isotropic S velocity (Voigt average) and the anisotropic parameter, xi (Vsh2/Vsv2).
Authors:  
Charles Megnin
Berkeley Seismological Laboratory
University of California, Berkeley
Barbara Romanowicz
Berkeley Seismological Laboratory
University of California, Berkeley
Previous Model
Reference Model PREM500
Model Download
gzipped tarfile (~2.9 MB) includes all necessary model files, as well as some tools for obtaining model values at specified locations in the mantle.
SAW642AN_percent.nc (metadata )is the netCDF binary for the above model expressed as percent S-velocity perturbation relative to PREM500 .
SAW642AN_kmps.nc (metadata )is the netCDF binary for the above model expressed in km/s.
Model Homepage www.clas.ufl.edu/users/mpanning/SAW642AN.html
Depth Coverage Whole Mantle (~50 to ~2850 km)
Areal Coverage Global (-90°/90°, -180°/180°)
 
Data Set Description The waveform data used consists of three-component long period time-domain ground acceleration seismic waveforms divided into three-component surface and body wave packets from 1191 events.

lateral sections of SAW642AN of perturbations in Vs for several depths in the mantle

Figure, Panning and Romanowicz (2006) , shows lateral sections of SAW642AN of perturbations in Vs for several depths in the mantle.

Citation

  • Megnin, Charles and Barbara Romanowicz. 2000. “The shear velocity structure of the mantle from the inversion of of body, surface and higher modes waveforms.”, Geophys. J. Int. 143:709-728.
  • 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 application, Seismological Research Letters, 83(6), 846:854. doi: 10.1785/0220 120032 .

Credits

  • Charles Megnin and Barbara Romanowicz

DOI

doi:10.1046/j.1365-246X.2000.00298.x

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