ShakeMaps for the 1868 Hayward Quake and the 1989 Loma Prieta Quake

2 side-by-side maps showing amount of ground shaking in 1868 & 1989 earthquakes. Yellow is light shaking. Reds are stronger shak

Detailed Description

ShakeMap showing the inferred intensity of ground shaking in the 1868 earthquake (measured as MMI, or Modified Mercalli Intensity), compared to a ShakeMap for the 1989 magnitude 6.9 Loma Prieta earthquake. Red lines are major earthquake faults; black line shows the portion of the Hayward Fault that ruptured in 1868; diamonds show locations of damage reports (1868) and seismic recordings (1989).


Image Dimensions: 1485 x 912

Date Taken:

Location Taken: San Francisco Bay Area, CA, US