San Juan Bautista
The San Juan Bautista area covers the junction between the northern end of the creeping section of the San Andreas Fault and the southern section of the (now locked) region of the fault that was last ruptured during the great 1906 San Francisco earthquake. The region thus forms a natural laboratory where the processes of stable sliding (creep) and unstable sliding (earthquakes) can be closely monitored. Moderate magnitude earthquakes have occurred quite frequently in this region in the past. The largest and most recent event was the 1989 M7.1 Loma Prieta earthquake. Locations of San Juan Bautista area monitoring sites and data plots of recent measurements are available on these pages.
Map of Instrument Sites
Data Plots
Most instruments take measurements every 10-minutes. Seven day plots are updated every 30-minutes. Thirty day plots are updated daily.
| Instrument | Plots | |
|---|---|---|
| Creepmeters | past 7-days | past 30-days |
| GTSM Tensor Strainmeters | past 7-days | past 30-days |
The plots and data on this site are generated automatically and are not reviewed. They should not be used for engineering, legal, or any other critical applications.
