California - Earthquake Shaking Potential - California Geological Survey

This dataset shows the relative intensity of ground shaking in California from anticipated future earthquakes. The shaking potential is calculated as the level of ground motion that has a 2% chance of being exceeded in 50 years, which is the same as the level of ground-shaking with about a 2500-year average repeat time. Relatively long-period (1.0 second) earthquake shaking is shown here. Long-period shaking affects tall, relatively flexible buildings, but also correlates well with overall earthquake damage. Although the greatest hazard is in areas of highest intensity as shown on the map, no region is immune from potential earthquake damage.

There are five datasets within this download:

• National Loss from Earthquake Damage, Conterminous United States (2014 Estimate) [EarthquakeLoss_US_2014]

• Historic Earthquakes, 1769-2015, Magnitude 5+ [EQs_Calif_1769_2015_M5plus]

• Earthquake Shaking Potential for California [SA10_2pct50yrs]

• Fault-based seismic sources used in the Uniform California Earthquake Rupture Forecast, Version 3 (UCERF3) [UCERF3_Faults]

• Shear-wave Velocity in Upper 30m of Surficial Geology (Vs30) [Vs30_ShearWaveVelocity2015]