A 3‐D Shear Velocity Model of the Crust and Uppermost Mantle Beneath Alaska Including Apparent Radial Anisotropy.
|Title||A 3‐D Shear Velocity Model of the Crust and Uppermost Mantle Beneath Alaska Including Apparent Radial Anisotropy.|
|Type||3-D Tomography Earth Model|
|Sub Type||Shear-wave velocity in km/s. Strength of radial anisotropy in %.|
|Short Description||A model of the 3‐D shear velocity structure of the crust and uppermost mantle beneath Alaska and its surroundings on a ~50‐km grid, including crustal and mantle radial anisotropy, based on seismic data recorded at more than 500 broadband stations. The model derives from a Bayesian Monte Carlo inversion of Rayleigh wave group and phase speeds and Love wave phase speeds determined from ambient noise and earthquake data.|
|Compagnie Générale de Géophysique (CGG)|
|Department of Physics|
|University of Colorado Boulder|
|Boulder, CO, USA|
|Model Download||Alaska-LFeng-2019-vsv-gamma.nc (see metadata ), is the netCDF file for the model as a function of depth|
|Depth Coverage||0 to 200 km|
|Area||Alaska and northwestern Canada (approx. 52°/72° latitude and -172°/-122° longitude)|
|Data Set Description||This dataset includes the absolute shear wave velocity structure with radial anisotropy of the crust and uppermost mantle beneath Alaska, derived from a joint inversion of the Rayleigh and Love wave data extracted from both ambient noise and earthquakes. The model is constructed with a Bayesian Monte Carlo inversion algorithm, providing reliable information about model uncertainties.|
To cite the original work behind this Earth model:
- Feng, L., and M.H.Ritzwoller, A 3-D shear velocity model of the crust and uppermost mantle beneath Alaska including apparent radial anisotropy, J. Geophys. Res. Solid Earth, 124, 19,468-10,497, https://doi.org/10.1029/2019JB018122, 2019.
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/emcalaskalfeng2019
- Jadamec, M. A., & Billen, M. I. (2010). Reconciling surface plate motions with rapid three‐dimensional mantle flow around a slab edge. Nature, 465(7296), 338–341. https://doi.org/10.1038/nature09053
Model provided by Lili Feng