Data Services Products: EMC-Alaska_CVM_AKEP2020 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- (Vp) and Vp to shear-wave velocity ratio (Vp/Vs) models of Alaska, covering much of the 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 Vs is also provided.

Description

Name Alaska_CVM_AKEP2020
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) and compressional-to-shear-wave velocity ratio (dimensionless)
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 Alaska Amphibious Community Seismic Experiment, to image the compressional-wave velocity and compressional-to-shear-wave velocity ratio structure of the Alaska region from the joint inversion of regional earthquake locations, body-wave data, and surface-wave data.
Authors:  
Donna Eberhart-Phillips
Department of Earth and Planetary Sciences
University of California, Davis
1124 Crocker Lane, Davis, CA 95616
 
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-AKEP2020.nc (see metadata ), is the netCDF file for the model as a function of depth
Model Homepage
Depth Coverage 1 km asl to 190 km bsl
Area Alaska and adjacent Canada ( approx. 50.07°/71.32° latitude and -166.12°/-126.5° longitude)
 
Data Set Description The dataset includes absolute P- and S-wave velocity models and Vp/Vs model across most of Aalaska and adjacent Canada from the joint inversion of regional earthquake locations, body-wave data, and surface-wave data.

Figure 1
Figure 1. P-wave velocity results for 6, 15, 33, and 85 km depth (b.s.l.).

Figure 2
Figure 2. Vp/Vs results for 6, 15, 33, and 85 km depth (b.s.l.).

Citations and DOIs

To cite the original work behind this Earth model:

  • Eberhart-Phillips, D., A. Nayak, N. Ruppert, and C. Thurber (2020), Alaska 2020 update for USGS G19AP00019: Initial Development of Alaska Community Seismic Velocity Models, https://zenodo.org/record/3727244.

  • Nayak, A., D. Eberhart-Phillips, N. Ruppert, H. Fang, M. Moore, C. Tape, D. Christensen, G. Abers & C.H Thurber (2020). Three-dimensional seismic velocity models for Alaska from joint tomographic inversion of body-wave and surface-wave data, Seism. Res. Lett. Focus Section – Earthscope Alaska and Canada, https://doi.org/10.1785/0220200214.

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.2020.akcvmakep.1

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
Uploaded to EMC
2020-09-28
Citation updated

Categories

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