Data Services Products: EMC-Alaska-S+SW-2018 3D shear-wave velocity model of Alaskan upper mantle from the joint inversion of teleseismic S-wave travel-time residuals and Rayleigh wave dispersion.

Summary

Alaska-S+SW-2018 is a 3D shear-wave velocity model of Alaskan upper mantle from the joint inversion of teleseismic S-wave travel-time residuals and Rayleigh wave dispersion.

Description

Name Alaska-S+SW-2018
Title 3D shear-wave velocity model of Alaskan upper mantle from the joint inversion of teleseismic S-wave travel-time residuals and Rayleigh wave dispersion.
Type 3-D Tomography Earth Model
Sub Type Shear-wave velocity in perturbation (%). A regional average 1D model at 0-210 km depth (see Reference Model below) can be used to convert the model perturbation at such depths into absolute Vs.
Year 2018
 
Short Description   Teleseismic travel-time residuals and Rayleigh wave dispersion from the full EarthScope Transportable Array and more than 269 additional stations in Alaska and northwestern Canada are jointly inverted for 3-D velocity perturbations.
Authors:  
Chengxin Jiang
Department of Earth and Planetary Sciences
The University of New Mexico
 
Brandon Schmandt
Department of Earth and Planetary Sciences
The University of New Mexico
 
Kevin M. Ward
Department of Geology and Geological Engineering
South Dakota School of Mines & Technology
 
Fan-Chi Lin
Department of Geology and Geophysics
The University of Utah
 
Lindsay L. Worthington
Department of Earth and Planetary Sciences
The University of New Mexico
 
 
Previous Model None
Reference Model Averaged 1D model is described as depth (km)-Vs(km/s): 5-3.142; 15-3.572; 25-3.701; 35-4.087; 45-4.328; 55-4.384; 65-4.410; 75-4.429; 90-4.446; 120-4.460; 150-4.482; 180-4.521; 210-4.579
Model Download Alaska-S+SW-2018_percent.nc (metadata ), is the netCDF file for the model as a function of depth
Model Homepage
Depth Coverage 0 to 800 km
Areal Coverage Alaska and northwestern Canada (approx. 54°N/72°N latitude and 130°W/170W° longitude)
 
Data Set Description [Jiang et al., 2018] The dataset includes 86652 multi-frequency S-wave travel time residuals and 8-100 s Rayleigh wave dispersion information. The Rayleigh wave dispersion at periods of 8-30 s are from Ward and Lin, [2018].

Tomography maps of the upper mantle
[Jiang et al., 2018] Tomography maps of the upper mantle. A) Shear-wave velocity at a depth of
90 km. The black thin lines represent major faults, thick green line marks the Pacific plate
boundary, and white triangles denote <2 Ma volcanos. B) Shear-wave velocity at a depth of 120
km. C) Shear-wave velocity at a depth of 150 km. D) Shear-wave velocity at a depth of 210 km. E)
Shear-wave velocity at a depth of 270 km. F) Shear-wave velocity at a depth of 390 km.

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:

  • Jiang, C., Schmandt, B., Ward, K. M., Lin, F., and Worthington, L. L., (2018), Upper mantle seismic structure of Alaska from Rayleigh and S-wave tomography, Geophysical Research Letters, 45, 10350-10359. https://doi.org/10.1029/2018GL079406

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

  • IRIS DMC (2018), Data Services Products: Alaska-S+SW-2018, 3D shear-wave velocity model of Alaskan upper mantle from the joint inversion of teleseismic S-wave travel-time residuals and Rayleigh wave dispersion, https://doi.org/10.17611/DP/EMCAKSSW18.

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

References

  • Ward, K. M., and Lin, F., (2018), Lithospheric Structure Across the Alaskan Cordillera from the Joint Inversion of Surface Waves and Receiver Functions, Journal of Geophysical Research: Solid Earth, 123, 8780-8797. https://doi.org/10.1029/2018JB015967.

Credits

  • Chengxin Jiang
  • Brandon Schmandt
  • Kevin M. Ward
  • Fan-Chi Lin
  • Lindsay L. Worthington

Timeline

2018-10-02
Added

Categories

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