Data Services Products: EMC-3D2017_09Sv Global SV wave upper mantle model updated until September 2017

Summary

3D2017_09Sv is the latest Sv wave model of the upper mantle and transition zone based on the waveform modeling of 1,517,611 Rayleigh waves recorded between 1976 and September 2017. The use of approximate forward theory and modeling allows updating the model following the publication of the monthly CMT catalog. 3D2017_09Sv contains azimuthal anisotropy and achieves a lateral resolution of ~600 km in the upper mantle.

Description

Name 3D2017_09Sv
Title Global SV wave upper mantle model updated until September 2017
Type 3-D Tomography Earth Model
Sub Type SV wave velocity, Azimuthal anisotropy and peak to peak anisotropy
Year 2017
Short Description   3D2017_09Sv is the current update of our background model 3D2015_07Sv up to September 2017. It is based on the waveform modeling of 1,517,611 Rayleigh waves recorded between 1976 and September 2017. 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
1Villeurbanne, France
Previous Model 3D2016_09Sv
Reference Model
Model Download
3D2017-09Sv-depth.nc (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 September 2017. 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 3D2017_09Sv
SV velocity distribution at different depths in 3D2017_09Sv. 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 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:

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

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

Credits

Eric Debayle, Fabien Dubuffet, Stéphanie Durand

Timeline

2018-02-16
added

Contributors

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

Categories

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