サンアンドレアス断層
Rogers selected the location of Parkfield for its significance as the most densely monitored earthquake region in the world. USGS Seismologist Andy Micheal originally suggested the location. Parkfield is also the home of the USGS Parkfield Earthquake Experiment and the San Andreas Fault Observatory at Depth (SAFOD). The region of Parkfield is located on the central section of the San Andreas Fault.