Data Services Products: EMC-CANVAS A radially anisotropic adjoint waveform tomography model of California and Nevada

Summary

The California-Nevada Adjoint Simulations (CANVAS) model is a radially anisotropic adjoint waveform tomography model of the crust and uppermost mantle of California and Nevada.

Description

Name CANVAS
Title A radially anisotropic adjoint waveform tomography model of California and Nevada
Type 3-D Tomography Earth Model
Sub Type Full waveform model including wavespeed and density
Year 2024
Data Revision r0.0 (revision history)
 
Short Description   The California-Nevada Adjoint Simulations (CANVAS) model is a radially anisotropic adjoint waveform tomography model of the crust and uppermost mantle of California and Nevada. The model follows a multiscale inversion approach where we begin with a period band of 30-100 seconds and iterate down to a minimum period of 12 seconds over 161 iterations. Data from over 30,000 source-receiver pairs are used across 117 events. The model honors the Moho topography of Crust1.0 (Laske et al., 2013).
 
Authors: Claire Doody, Lawrence Livermore National Laboratory, Livermore, CA, USA

Arthur Rodgers, Lawrence Livermore National Laboratory, Livermore, CA, USA

Michael Afanasiev, Mondaic, Ltd., Zürich, Switzerland

Christian Boehm, Mondaic, Ltd., Zürich, Switzerland

Lion Krischer, Mondaic, Ltd., Zürich, Switzerland

Andrea Chiang, Lawrence Livermore National Laboratory, Livermore, CA, USA

Nathan Simmons, Lawrence Livermore National Laboratory, Livermore, CA, USA

 
Reference Model None
 
Prior Model WUS256
 
Model Download CANVAS.r0.0.nc (see metadata) is the model in netCDF 3 Classic format:
  • vp, Voigt-averaged isotropic compressional wavespeed (m/s)
  • vs, Voigt-averaged isotropic shear wavespeed (m/s)
  • vpv, vertically polarized compressional wavespeed (m/s)
  • vsv, vertically polarized shear wavespeed (m/s)
  • vph, horizontally polarized compressional wavespeed (m/s)
  • vsh, horizontally polarized shear wavepseed (m/s)
  • rho, density, ρ (g/cm3)
 
Model Home Page None
 
Depth Coverage 0-100 km
 
Area California and Nevada (31.5˚ /43˚ , -125˚ /-114˚ )
 
Data Set Description CANVAS was iteratively inverted to fit nearly 100,000 waveforms from 117 earthquakes over a period band of 12 to 100 seconds.
 
 

CANVAS figure
Map view of CANVAS at 5 km (a),(c) and 15 km (b),(d) depth. Panels a and b show absolute isotropic VS, while panels c and d show absolute isotropic VP. Warmer colors denote slower regions, while cooler colors denote faster regions. The thin black lines in all panels denote the physiographic regions proposed in Fenneman and Johnson (1946). The thick black line shows the location of the San Andreas Fault.

Citations and DOIs

To cite the original work behind this Earth model:

  • Doody, C., Rodgers, A., Afanasiev, M., Boehm, C., Krischer, L., Chiang, A., & Simmons, N. (2023). CANVAS: An adjoint waveform tomography model of California and Nevada. Journal of Geophysical Research: Solid Earth, 128(12). https://doi.org/10.1029/2023JB027583

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.2024.canvas.1


References:

  • Fenneman, N.M. and Johnson, D.W., 1946, Physiographic divisions of the conterminous U. S: U.S. Geological Survey data release, https://doi.org/https://doi.org/10.5066/P9B1S3K8
  • Laske, G., Masters., G., Ma, Z. and Pasyanos, M., Update on CRUST1.0 – A 1-degree Global Model of Earth’s Crust, Geophys. Res. Abstracts, 15, Abstract EGU2013-2658, 2013.

Credits

  • r0.0 model provided by Claire Doody.

Revision History

revision r0.0: uploaded January 17, 2024.

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