What is the rate of seismicity in California?
This question was submitted to us by a 4th grade class in Southern California. We thought it was a great question and have made it into a FAQ! Dr. Robert Uhrhammer at the Berkeley Seismological Laboratory provided this answer. Using the ANSS earthquake catalog, we retrieved earthquake data for 1988-1997 for the area of California. 372,826 earthquakes were retrieved. Thus, on an average year, approximately 37,300 earthquakes are recorded and analyzed.
