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.
Quicklinks
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. |
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
