Pasadena Field Office, Pasadena CA

The Pasadena USGS Office conducts research and promotes activities to reduce earthquake hazards in southern California. The Office works with Caltech and the California Geological Survey (CGS) operating the Southern California Seismic Network, and also operates GPS stations, to monitor earthquake activity, to continuously monitor crustal movements, and to provide information for earthquake response.

The Office also collaborates on projects with the Southern California Earthquake Center (SCEC), including research as well as Outreach & Education.

  •  Preparedness

    USGS handbooks that describe the threat posed by earthquakes in Southern California and explain how you can prepare for, survive, and recover from these inevitable events.

  •  The Great California ShakeOut

    Millions of people worldwide will practice how to Drop, Cover, and Hold On at 10:16 a.m. on October 16* during Great ShakeOut Earthquake Drills, which began in California in 2008.

  •  Active Faults in Southern California

    USGS geologists are working to characterize the behavior of major faults in Southern California. This research includes trenching faults to uncover evidence of earthquakes that occurred hundreds to thousands of years in the past and mapping surface rupture features following major earthquakes.

  •  Earthquake Early Warning

    The objective of earthquake early warning is to rapidly detect the initiation of an earthquake and issue a warning before the seismic waves reach a populated area. The USGS and its partners are working to bring earthquake early warning to the West Coast.

  •  UCERF - Operational Earthquake Forecasting

    Long-term estimates of seismic hazard are needed to set building codes and earthquake insurance rates. We are working to improve these hazard models and estimate shorter-term probabilities such as aftershock forecasts.

  •  Earthquake Ground Motion

    The shaking felt during an earthquake is a combination of many factors, including earthquake size, the structure of the Earth’s crust, and local soil behavior. By better understanding the ground motions that would be produced in a large earthquake, we can engineer a more resilient urban environment.

  •  SAFRR - Improving Resilience to Natural Hazards

    The SAFRR project is working to build resilience to natural hazards such as earthquakes, floods, wildfires, landslides, tsunamis, and coastal erosion by working with decision making and emergency response efforts across the nation.