Case Study: San Francisco, California 1989

Causes

·         Measured 6.9 on the Richter scale

·         Lasted 15 seconds with no warning

·         Epicentre in Santa Cruz mountains, 60 miles south from San Francisco

·         Caused by conservative plate boundary (San Andreas Fault) of the North American and Pacific plates (moving north 3.7cm per year).

Impacts

·         63 people killed

·         3,757 people injured

·         2 miles of the Cyprus freeway collapsed…