Average Velocity
The integrated Sentinel-1 InSAR and GNSS time-series reveal a complex
time-averaged velocity field (Fig. 2, 3) over the entire San Andreas
fault system. The most prominent feature is the large-scale tectonic
motion between the two plates with sharp transitions at creeping
strike-slip faults and broader transitions at more deeply-locked faults.
Superimposed on this tectonic pattern are numerous nontectonic
deformations mostly related to hydrological and hydrothermal processes.
These non-tectonic features are highlighted in the semi-vertical
component (Fig. 2d). Our velocity maps are available as kmz files
(http://topex.ucsd.edu/gmtsar/tar/San_Andreas_Xu_et_al.kmz ) so
that the user can examine in detail the correlations between vertical
deformation and natural and man-made surface features (See Supplementary
Text S1 and Movie S1 for much more details).