Data Services Products: EMC-SEISGLOB1 Model based on the joint inversion of normal modes and surface waves

Summary

Model based on the joint inversion of splitting and cross-coupling coefficients of normal modes and Rayleigh phase velocity perturbations. We also invert for the crust.

Description

Name SEISGLOB1
Title Model based on the joint inversion of normal modes and surface waves.
Type 3-D Tomography Earth Model
Sub Type Shear-wave velocity (%)
Year 2016
Short Description   SEISGLOB1 is a pure Sv tomographic model based on the joint inversion of Rayleigh surface wave phase velocity perturbations and splitting and coupling coefficients of normal modes. It is parameterized laterally in spherical harmonics up to degree 20 and with 21 splines in depth (the same as in S40RTS (Ritsema et al. (2011))). The model values are in percent with respect to the reference model PREM (Dziewonski & Anderson (1981)).
Authors:  
Stephanie Durand
Institut fuer Geophysik
Muenster, Germany

Eric Debayle
LGL-TPE, CNRS
Villeurbanne, France

Yanick Ricard
LGL-TPE, CNRS
Villeurbanne, France

Sophie Lambotte
EOST
Strasbourg, France
Previous Model N/A
Reference Model PREM
 
Model Download SEISGLOB1_percent.nc (metadata ), is the netCDF file for the model
 
Model Homepage http://earth.uni-muenster.de/~durand/Stephanie_Duran_1./Resources.html
Depth Coverage 0 to 2850 km
Areal Coverage Global coverage (latitude: -89°/89°, longitude: 0°/359°)
 
Data Set Description The data set includes ~22M Rayleigh surface wave measurements for fundamental-mode and higher-mode up to 5th order phase velocities (Durand et al. (2015)), ~10K normal mode splitting coefficients and ~650 normal mode cross-coupling coefficients. See Durand et al. (2016) for more details.

SEISGLOB1
Figure, SEISGLOB1 shear velocity perturbations (%) with respect to PREM at multiple depths.
Green lines display the plate boundaries and the black circles the hotspots location.

Citations and DOIs

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.

To cite the source of this Earth model:

  • Durand S., E. Debayle, Y. Ricard, S. Lambotte (2016), Seismic evidence for a change in the large scale tomographic pattern across the D layer, Geophys. Res. Lett., 43(15), 7928-7936

To reference the use of this Earth model hosted by EMC:

  • IRIS DMC (2017), Data Services Products: SEISGLOB1, 3D global shear-wave isotropic and radially anisotropic model from a joint inversion for multiple data sets, https://doi.org/10.17611/DP/EMCSEISGLOB1.

To cite IRIS Earth Model Collaboration (EMC) data product or reference use of its repository:

References

  • Durand S., E. Debayle, Y. Ricard, S. Lambotte (2016), Seismic evidence for a change in the large scale tomographic pattern across the D layer, Geophys. Res. Lett., 43(15), 7928-7936
  • Durand S., E. Debayle and Y. Ricard, (2015), Rayleigh wave phase velocity and error maps up to the fifth overtone, Geophys. Res. Lett., 42(9), 3266-3272
  • Ritsema, J., Deuss, A., van Heijst, H.J., Woodhouse, J.H., 2011, S40RTS: a degree-40 shear-velocity model for the mantle from new Rayleigh wave dispersion, teleseismic traveltime and normal-mode splitting function measurements, Geophys. J. Int., 184, 1,223-1,236.
  • Dziewonski, A. M., Anderson, D. l., 1981, Preliminary reference Earth model, Phys. Earth Planet. Sci., 25, 297-236.

Credits

  • Stephanie Durand, Eric Debayle, Yanick Ricard, Sophie Lambotte

Timeline

2017-12-14
online

Categories

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