Data Services Products: EMC-SoCal.ANAT_Vs+RA.Wang.2020 A radially anisotropic shear-wave model of Southern California from ambient noise adjoint tomography

Summary

SoCal.ANAT_Vs+RA.Wang.2020 is a radially shear wave velocity model from adjoint tomography of Rayleigh and Love waves at 5-50 s extracted from three-component ambient noise cross correlation functions of Southern California.

Description

Name SoCal.ANAT_Vs+RA.Wang.2020
Title A radially anisotropic shear-wave model of Southern California from ambient noise adjoint tomography
Type 3-D Tomography Earth Model
Sub Type Shear-wave velocity (km/s)
Year 2020
Short Description     This is a radially shear wave velocity model from adjoint tomography of Rayleigh and Love waves at 5-50s extracted from three-component ambient noise cross correlation functions of Southern California.
Authors:  
Kai Wang
Department of Earth and Planetary Sciences
Macquarie University
Balaclava Rd, Macquarie Park, NSW, 2109, Australia
 
Yingjie Yang
Department of Earth and Planetary Sciences
Macquarie University
Balaclava Rd, Macquarie Park, NSW, 2109, Australia
 
Qinya Liu
Department of Physics & Department of Earth Sciences,
University of Toronto
27 King’s College Cir, Toronto, ON M5S, Canada
 
Chengxin Jiang
Department of Earth and Planetary Sciences,
Harvard University
Cambridge, MA, USA.
 
Vera Schulte-Pelkum
Cooperative Institute for Research in Environmental Sciences and Department of Geological Sciences,
University of Colorado Boulder
Boulder, CO 80309, USA
 
Piero Basini
Total, 64000 Pau, France.
 
Carl Tape
Geophysical Institute and Department of Geosciences
University of Alaska Fairbanks
Fairbanks, AK 99775-7320, USA
 
Ping Tong
Division of Mathematical Sciences, School of Physical and Mathematical Sciences and Asian School of the Environment Nanyang Technological University
Singapore, 639798, Singapore
Previous Model None
Reference Model None
Model Homepage https://sites.google.com/view/kaikaiwang/products
 
Model Download SoCal SPECFEM3D mesh files (Socal_specfem3d_meshfiles)
Model binaries files (model_M28_bin)
SoCal.ANAT-Vs+RA.Wang.2020.nc (see metadata), is the netCDF file for the model
 
 
Depth Coverage -2.5 to 60.0 km (below earth surface)
Area Southern California (latitude 32.2°N/36.8°N, longitude 121.6°W/114.7°W)
 
Data Set Description    [Wang et al. (2020)] Dataset includes S-wave velocity structure across Southern California based on 10504 Rayleigh waves and 10463 Love waves filtered at 5-50s from three-component ambient noise recorded by 148 regional stations from 2006 to 2012.
 

Figure 1
F*igure 1.* Map of southern California with topography, bathymetry and active faults. The solid black rectangle outlines the simulation region. The 148 stations used in this tomographic study are shown as triangles, out of which 19 are selected for line search (shown in red). Faults are indicated by the bold black lines. Labels 1-8 denote the major eight geological provinces with their boundaries delineated by red dash lines: 1. Coastal Ranges; 2. Great Central Valley; 3. Sierra Nevada; 4. Basin and Ranges; 5. Transverse Ranges; 6. Mojave Desert; 7. Peninsular Ranges; 8. Salton Trough. Geological features labeled in bold white letters as referred by subsequent figures: SCR, southern Coast Range; SAF, San Andreas Fault; SJV, San Joaquin Valley; SNB, Sierra Nevada Batholith; GF, Garlock Fault; WL, Walker Lane; WBR, Western Basin and Range; WTR, CTR, and ETR, western, central and eastern Transverse Range; ECSZ, Eastern California shear zone; ICB, Inner Continental Borderland; LAB, Los Angeles Basin; EF, Elsinore Fault; SJF, San Joaquin Fault; ePRB and wPRB, east and west Peninsular Ranges Batholith; STB, Salton Trough Basin.

Figure 2
Figure 2. Horizontal cross sections of Voigt-averaged shear-wave velocity (Vs) and radial anisotropy (RA) at depths of 10 km (a, b), 20 km (c, d), and 40 km (e, f). Locations of the profiles (AA’-EE’) in Figure 4 are plotted as magenta solid lines in b.

Figure 3
Figure 3. Voigt Vs (left panels) and radial anisotropy (right panels) along the profiles shown in Figure 3b. Geological features (with abbreviations shown in Figure 1) are marked by blue lines and bold texts; the depths of Moho [Zhu et al., 2010] are plotted in black solid lines. Major faults (SAF: San Andreas Fault; GF: Garlock Fault) are marked by red dashed lines and bold text.

Citations and DOIs

To cite the original work behind this Earth model:

  • Wang K., Y. Yang, P. Basini, P. Tong, C. Tape, and Q. Liu, 2018. Refined crustal and uppermost structure of southern California by ambient noise adjoint tomography. Geophysical Journal International, 215(3), 844-863. https://doi.org/10.1093/gji/ggy312

  • Wang K., Q. Liu, and Y. Yang, 2019. Three-Dimensional Sensitivity Kernels for Multi-component Empirical Green’s Functions From Ambient Noise: Methodology and Application to Adjoint Tomography. Journal of Geophysical Research: Solid Earth, 124(6), 5794-5810. https://doi.org/10.1029/2018JB017020
  • Wang, K., Jiang, C., Yang, Y., Schulte‐Pelkum, V., & Liu, Q. ( 2020). Crustal deformation in Southern California constrained by radial anisotropy from ambient noise adjoint tomography. Geophysical Research Letters, 47, e2020GL088580. https://doi.org/10.1029/2020GL088580

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:

References

  • Tape, C., Liu, Q., Maggi, A., & Tromp, J. (2010). Seismic tomography of the southern California crust based on spectral-element and adjoint methods. Geophysical Journal International, 180(1), 433–462. https://doi.org/10.1111/j.1365-246X.2009.04429.x
  • Barak, S., Klemperer, S. L., and Lawrence, J. F. ( 2015), San Andreas Fault dip, Peninsular Ranges mafic lower crust and partial melt in the Salton Trough, Southern California, from ambient‐noise tomography, Geochem. Geophys. Geosyst., 16, 3946– 3972. https://doi.org/10.1002/2015GC005970
  • Lee, E. J., Chen, P., Jordan, T. H., Maechling, P. B., Denolle, M. A., & Beroza, G. C. (2014). Full-3-D tomography for crustal structure in southern California based on the scattering-integral and the adjoint-waveform methods. Journal of Geophysical Research: Solid Earth, 119, 6421–6451. https://doi.org/10.1002/2014JB011346

Credits

Model provided by Kai Wang

Timeline

2020-04-21
online

Categories

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