Data Services Products: EMC-3D2015_10Sv 3D2015_10Sv, a global Sv wave upper mantle model updated until October 2015

Summary

3D2015_10Sv is our latest Sv wave model of the upper mantle and transition zone based on the waveform modeling of 1,377,550 Rayleigh waves recorded between 1976 and October 2015. We will update the model on a regular basis (every 2-3 months) following the publication of the monthly CMT catalog. 3D2015_10Sv contains azimuthal anisotropy and achieves a lateral resolution of ~600 km in the upper mantle

Description

Name 3D2015_10Sv
Title Global SV wave upper mantle model updated until October 2015
Type 3-D Tomography Earth Model
Sub Type SV wave velocity, Azimuthal anisotropy (azimuth and peak to peak strength of anisotropy)
Year 2015
Short Description   3D2015_10Sv is the current update of our background model 3D2015_10Sv up to October 2015. It is based on the waveform modeling of 1,377,550 Rayleigh waves recorded between 1976 and October 2015. The tomographic model is built using the same automated scheme as background model presented in Debayle et al., GRL 2016.
Authors:  
Eric Debayle, Fabien Dubuffet, Stéphanie Durand
Laboratoire de Géologie de Lyon: Terre, Planètes, Environnement, CNRS, UMR 5276
École Normale Supérieure de Lyon, Université de Lyon, Université Claude Bernard Lyon 1
Villeurbanne, France
Previous Model 3D2015_07Sv
Reference Model
Model Download 3D2015-10Sv_percent.nc (see metadata ), is the netCDF file for the model as a function of depth
Model Homepage http://perso.ens-lyon.fr/eric.debayle
Depth Coverage 40 to 1000 km
Areal Coverage Global
 
Data Set Description We requested records from IRIS and RESIF data centers starting from the CMT catalog issued at the Lamont-Doherty Earth Observatory of Columbia University. We requested all Rayleigh waveforms recorded on the LHZ channel by the virtual networks GSN_broadband, FDSN_all, and US_backbone between January 1976 and October 2015. We also used data from Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL) experiments in Africa, Tibet, and New Zealand, fromthe SKIPPY temporary deployment in Australia and fromFrench temporary experiments in the Horn of Africa, French Polynesia, and in the Aegean-Anatolia region.
 
Supplemental Information
 

SV velocity distribution at different depths in 3D2015_10Sv
SV velocity distribution at different depths in 3D2015_10Sv. Perturbations from the reference velocity in percent are displayed by color coding. The velocity varies from −10% to +10% from the average value in the uppermost 200 km. At greater depths, shear velocity perturbations are between −2% and +2% to emphasize smaller contrasts

SV velocity distribution at different depths in 3D2015_10Sv. Perturbations from the reference velocity in percent are displayed by color coding. The velocity varies from −10% to +10% from the average value in the uppermost 200 km. At greater depths, shear velocity perturbations are between −2% and +2% to emphasize smaller contrasts

Citations and DOIs

To cite the original work behind this Earth model:

  • Debayle, E., F. Dubuffet, and S. Durand (2016), An automatically updated S-wave model of the upper mantle and the depth extent of azimuthal anisotropy, Geophys. Res. Lett., 43, https://doi.org/10.1002/2015GL067329.

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 Fabien Dubuffet

Timeline

2016-05-12
Uploaded to EMC

Contributors

Eric Debayle, Fabien Dubuffet, Stéphanie Durand
Laboratoire de Géologie de Lyon

Categories

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