A high-resolution shear-wave velocity model from immediately offshore to the backarc in South America, using advanced full-wave ambient noise tomography
|Title||3-D shear-wave velocity model of the South American subduction margin|
|Type||3-D Tomography Earth Model|
|Sub Type||Shear-wave velocity (km/s)|
|Data Revision||r0.0 (revision history)|
|Short Description||A high-resolution shear-wave velocity model from immediately offshore to the backarc in South America, using advanced full-wave ambient noise tomography|
|Authors:||Meng Liu, Department of Geosciences, University of Massachusetts Amherst, 627 North Pleasant Street. Amherst, MA 01003, E-mail: firstname.lastname@example.org
Haiying Gao, Department of Geosciences, University of Massachusetts Amherst, 627 North Pleasant Street. Amherst, MA 01003, E-mail: email@example.com
|Reference Model||The initial reference model is composed of the 2°×2° global shear-wave velocity model (Shapiro & Ritzwoller, 2002) for the top 396 km and the 1-D AK135 velocity model (Kennett et al., 1995) at greater depths.|
|Model Download||FWT-SouthAmerica-2022.r0.0.nc (see metadata) in the Polar Stereographic Projection and in netCDF 3 Classic format.|
|Depth Coverage||0–200 km|
|Area||South America (latitude: -10.0°/-56 °; longitude: -78°/-62°)|
|Data Set Description||Our model extends from longitude 62°W to 78°W, latitude 10°S to 56°S, and depths from the surface down to 200 km. We parametrize the model domain into 0.04° × 0.04° in the longitudinal and latitudinal directions. The vertical grid spacing is depth dependent, which increases from ~1.5 km near the surface to ~5.4 km at 200 km depth.|
Citations and DOIs
To cite the original work behind this Earth model:
- Liu, M., & Gao, H. (2022). Three- dimensional variation of the slab geometry within the South American subduction system. Geophysical Research Letters, 49, e2021GL095924. https://doi.org/10.1029/2021GL095924
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.2022.fwtsamerica.2022.1
- Shapiro, N. M., and M. H. Ritzwoller (2002), Monte-Carlo inversion for a global shear-velocity model of the crust and upper mantle, Geophys. J. Int., 151(1), 88-105, https://doi.org/10.1046/j.1365-246X.2002.01742.x
- Hayes, G. P., Moore, G. L., Portner, D. E., Hearne, M., Flamme, H., Furtney, M., & Smoczyk, G. M. (2018). Slab2, a comprehensive subduction zone geometry model. Science, 362(6410), 58–61. https://doi.org/10.1126/science.aat4723
- Kennett, B. L. N., Engdahl, E. R. Traveltimes for global earthquake location and phase identification. Geophys. J. Int., 105: 429-465 (1991)
- r0.0 model provided by Meng Liu.
revision r0.0: uploaded October 06, 2022.