The UW statewide model is a three-dimensional (3D) tomographic model of the P wave velocity (Vp) structure of northern California. It was obtained using a regional-scale double-difference tomography algorithm that incorporates a finite-difference travel time calculator and spatial smoothing constraints. Arrival times from earthquakes and travel times from controlled-source explosions, recorded at network and/or temporary stations, were inverted for Vp on a 3D grid with horizontal node spacing of 10 to 20 km and vertical node spacing of 3 to 8.
Lin, G., C. H. Thurber, H. Zhang, E. Hauksson, P. Shearer, F. Waldhauser, T. M. Brocher, and J. Hardebeck (2010), A California statewide three-dimensional seismic velocity model from both absolute and differential times. Bulletin of the Seismological Society of America, 100, 225-240. doi:10.1785/0120090028. SCEC Contribution 1360
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 [email protected]. 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 UWLINCA based?) should be directed to the model's authors, located in the AUTHORS file.
A right rectangle with 36 degree rotation
vs and density are calculated, from https://pubs.usgs.gov/of/2005/1317/of2005-1317.pdf
*[eqn. 1] Vs (km/s) = 0.7858 – 1.2344Vp + 0.7949Vp2 – 0.1238Vp3 + 0.0064Vp4 *[eqn. 6] r (g/cm3) = 1.6612Vp – 0.4721Vp2 + 0.0671Vp3 – 0.0043Vp4 + 0.000106Vp5