Data Services Products: EMC-HMSL-S06 Earth model HMSL-S06

Summary

HMSL-S06, Houser et al. (2008) , is an isotropic shear velocity model with 18 layers (approximately 100 km thickness in the upper mantle and 200 km in the lower mantle) and 2578 blocks in each layer (approximately 4 degree equal area blocks at the equator).

Description

Name HMSL-S06
Title A global shear velocity model of the mantle from cluster analysis of long-period waveforms
Type 3-D Tomography Earth Model
Sub Type Shear velocity perturbation (%)
Year 2006
 
Short Description   HMSL-S06 is an isotropic shear velocity model with 18 layers (approximately 100 km thickness in the upper mantle and 200 km in the lower mantle) and 2578 blocks in each layer (approximately 4 degree equal area blocks at the equator). The upper mantle is constrained by Love and Rayleigh waves compiled by Gabi Laske and the lower mantle is constrained by long period S, SS, SS-S, and ScS-S travel times. Corrections are made for CRUST2.0 and ellipticity. While ak135 is the 1D model used for ray tracing in the inversion, the travel time measurements for each phase have the mean removed, so the 3D model is not built with respect to any particular 1D model.
Authors:  
Christine Houser
  U.C. San Diego (now at UCSC Earth Sciences)
  California, USA
T. Guy Masters
  U.C. San Diego
  California, USA
Peter Shearer
  U.C. San Diego
  California, USA
Gabi Laske
  U.C. San Diego
  California, USA
 
Previous Model
Reference Model Corrections are made for CRUST2.0 and ellipticity. While ak135 is the 1D model used for ray tracing in the inversion, the travel time measurements for each phase have the mean removed, so the 3D model is not built with respect to any particular 1D model.
Model Download
The original model files from the model download page.
HMSL-S06_percent.nc (metadata )
Model Homepage es.ucsc.edu/~creif/Sites/Christine_Houser/Models.html
Depth Coverage 66 to 2798 km
Areal Coverage Global (-90°/90°, -180°/180°)
Data Set Description

 depth slices of HMSL-S06

Figure, Houser et al. (2008) , shows depth slices of HMSL-S06, where the mean from each layer has been removed. Dark red and blue areas represent anomalies that are 2 per cent slow and fast, respectively. The largest anomalies occur within a few hundred kilometres of the surface and the core-mantle boundary (CMB).

Citation

  • Houser, C., G. Masters, P. Shearer and G. Laske. 2008. “Shear and compressional velocity models of the mantle from cluster analysis of long-period waveforms.” Geophys. J. Int., 174:195-212.].
  • 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

  • C. Houser, G. Masters, P. Shearer and G. Laske

DOI

doi:10.1111/j.1365-246X.2008.03763.x

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