Data Services Products: EMC-Alaska_CVM_AKAN2020 3D P- and S-wave velocity models of Alaska from the joint inversion of regional earthquake locations, body-wave data, and surface-wave data

Summary

3D compressional- and shear-wave velocity models of Alaska, covering nearly the entire state, from the joint tomographic inversion of regional earthquake locations, body-wave data, and surface-wave data, the latter from ambient noise; an estimate of Vp/Vs is also provided.

Description

Name Alaska_CVM_AKAN2020
Title 3D P- and S-wave velocity models of Alaska from the joint inversion of regional earthquake locations, body-wave data, and surface-wave data.
Type 3-D Tomography Earth Model
Sub Type Compressional and shear-wave velocity (km/s)
Year 2020
 
Short Description   The model incorporates seismic data from seismic stations throughout most of Alaska and adjacent Canada, including data from the IRIS Transportable Array and the onshore Alaska Amphibious Community Seismic Experiment, to image the compressional- and shear-wave velocity structure of the Alaska region from the joint inversion of regional earthquake locations, body-wave arrival times, and surface-wave phase velocity dispersion from ambient noise cross-correlations.
Authors:  
Avinash Nayak
Department of Geoscience (Now at Berkeley National Laboratory)
University of Wisconsin-Madison
1215 W. Dayton St., Madison, WI 53706, USA
 
Clifford Thurber
Department of Geoscience
University of Wisconsin-Madison
1215 W. Dayton St., Madison, WI 53706, USA
 
Previous Model None
Reference Model None
Model Download Alaska-CVM-AKAN2020.nc (see metadata ), is the netCDF file for the model as a function of depth
Model Homepage
Depth Coverage 1 to 300 km (below earth surface)
Area Alaska and adjacent Canada (approx. 50.9°/72.1° latitude and -173.2°/-126.8° longitude)
 
Data Set Description The dataset includes absolute P- and S-wave velocity models across most of Alaska and adjacent Canada from the joint inversion of regional earthquake locations, body-wave data, and surface-wave data.

Figure 1
P-wave velocity results for 33.0 km depth (b.s.l.).

Figure 2
S-wave velocity results for 1.0 km depth (b.s.l.).

Citations and DOIs

To cite the original work behind this Earth model:

  • Thurber, C. H. (submitted), Initial Development of Alaska Community Seismic Velocity Models, USGS Final Technical Report, Award G19AP00019.

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: https://doi.org/10.17611/dp/emc.202.akcvmakan1

References

  • Thurber, C. H., Initial Development of Alaska Community Seismic Velocity Models, USGS Final Technical Report, Award G19AP00019 (submitted).
  • Thurber, C., D. Eberhart-Phillips, A. Nayak, N. Ruppert, M. Driskell, and H. Fang, Toward a Community Seismic Velocity Model for Alaska, SSA Annual Meeting, Seattle, WA, May 2019.

Credits

Model provided by Clifford Thurber

Timeline

2020-04-02
added to EMC

Categories

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