Data Services Products: EMC-SAM5_P_2019 Regional finite-frequency teleseismic P-wave tomography model for South America

Summary

SAM5_P_2019 uses relative arrival time residuals from 2,084 earthquakes recorded at 1,113 seismic stations from 42 temporary and permanent seismic networks across South America. Residuals are measured in four frequency bands and are inverted in a finite-frequency tomographic inversion.

Description

Name SAM5_P_2019
Title Regional finite-frequency teleseismic P-wave tomography model for South America.
Type 3-D Tomography Earth Model
Sub Type Relative P-wave velocity (%dVp)
Year 2019
 
Short Description   This model uses relative arrival time residuals from 2,084 earthquakes recorded at 1,113 seismic stations from 42 temporary and permanent seismic networks across South America. Residuals are measured in four frequency bands and are inverted in a finite-frequency tomographic inversion.
Authors:  
Daniel Evan Portner, Earth and Planetary Laboratory, Carnegie Institution for Science, Washington, DC
Emily E. Rodriguez, Department of Geosciences, University of Arizona, Tucson, AZ
Susan Beck, Department of Geosciences, University of Arizona, Tucson, AZ; George Zandt, Department of Geosciences, University of Arizona, Tucson, AZ
Alissa Scire, IRIS PASSCAL Instrument Center, New Mexico Institute of Mining and Technology, Socorro, NM
Marcelo P. Rocha, Instituto de Geosciencias, Universidade de Brasilia, Brasilia, Brazil
Marcelo B. Bianchi, Centro de Sismologia, Universidade de Sao Paulo, Sao Paulo, Brazil
Mario Ruiz, Instituto Geofisico, Escuela Politecnica Nacional, Quito, Ecuador
George Sand Franca, Instituto de Geosciencias, Universidade de Brasilia, Brasilia, Brazil
Cristobal Condori, Instituto de Geosciencias, Universidade de Brasilia, Brasilia, Brazil
Patricia Alvarado, Consejo Nacional de Investigaciones Cientificas y Tecnicas, Universidad Nacional de San Juan, San Juan, Argentina
 
Previous Model SAM4_P_2017
Reference Model iasp91
Model Download SAM5-P-2019.nc (see metadata ), is the netCDF file for the model as a function of depth
Model Homepage
Depth Coverage 60 to 1,450 km (best resolution 100-1,300 km depth)
Area South America ( -70.0° to 26° latitude and -120.0° to -4.0° longitude)
 
Data Set Description This model uses relative arrival time residuals from 2,084 earthquakes recorded at 1,113 seismic stations from 42 temporary and permanent seismic networks across South America. Most of the raw waveforms are publicly available at the IRIS, GFZ, USP, and RSBR seismic data repositories.

SAM5_P_2019
Caption for the image: SAM5_P_2019 tomography model in map view at various depths. The solid block contours are of the accompanying hit quality measure at a value of 0.2. Contours from the Slab2 slab model (magenta lines) and earthquakes from the ISC earthquake catalog (green circles) are shown for reference. Labeled anomalies are discussed in the associated paper.

Citations and DOIs

To cite the original work behind this Earth model:

  • Portner, D. E., Rodríguez, E. E., Beck, S., Zandt, G., Scire, A., Rocha, M. P., et al. ( 2020). Detailed structure of the subducted Nazca slab into the lower mantle derived from continent‐scale teleseismic P wave tomography. Journal of Geophysical Research: Solid Earth, 125, e2019JB017884. https://doi.org/https://doi.org/10.1029/2019JB017884

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.sam5p20191

Credits

Model provided by Daniel Evan Portner

Timeline

2020-05-19
online

Categories

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