The UW Parkfield velocity model describes 3D seismic P- and S-wave velocities from a tomographic inversion for crustal structure in the greater Parkfield region (Zeng et al., 2016). The inversion used the code tomoDD by Zhang and Thurber (BSSA, 2003), which inverts body-wave arrival times for 3D P- and S-wave velocity structure simultaneously with determining earthquake locations. A novel aspect of this model is that it used P- and S-wave arrivals from low-frequency earthquakes (LFEs) to improve resolution at greater depths than previous body-wave tomography studies of the Parkfield region. The coordinate system origin is (35° 57.60' N, -120° 30.28' W) with the Y-axis rotation to an azimuth of 139.2°.
Zeng, Xiangfang, C. H. Thurber, D. R. Shelly, R. M. Harrington, E. S. Cochran, N. L. Bennington, D. Peterson, B. Guo and K. McClement, '3-D P- and S-wave velocity structure and low-frequency earthquake locations in the Parkfield, California region'. Geophys. J. Int. (2016) 206, 1574–1585. doi: 10.1093/gji/ggw217
This package is intended to be installed as part of the UCVM framework, version 25.7 or higher.
If you would like to contact the authors regarding this software, please e-mail software@scec.org. Note this e-mail address should be used for questions regarding the software itself (e.g. how do I link the library properly?). Questions regarding the model's science (e.g. on what paper is the UWPKFCVM based?) should be directed to the model's authors, located in the AUTHORS file.
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