Long-term monitoring of creep rate along the Hayward fault and evidence for a lasting creep response to 1989 Loma Prieta earthquake

We present results from over 30 yr of precise surveys of creep along the Ha yward fault. Along most of the fault, spatial variability in long-term cree p rates is well determined by these data and can help constrain 3D-models o f the depth of the creeping zone. However. creep at the south end of the fa ult stopped completely for more than 6 years after the M7 1989 Loma Prieta Earthquake (LPEQ), perhaps delayed by stress drop imposed by this event. Wi th a decade of detailed data before LPEQ and a decade after it, we report t hat creep response to that event does indeed indicate the expected deficit in creep.