![]() ![]() ![]() Centuries of human habitation have in many cases paved over visible geological signs of faults below. When a 6.7-magnitude earthquake erupted in Northridge 25 years ago this week, it was on a fault scientists didn’t know existed. There are still faults under LA that scientists haven’t found yet. “My concern is how fast the city can recover from a catastrophic event,” she says. For the last four years, Curry has coordinated annual drills for the city of Los Angeles that use one of those in-basin earthquakes as a scenario, with government agencies working with military leaders to practice their response to the disaster. ![]() Those discoveries are also changing the way that LA prepares for earthquakes, says Mona Curry, an emergency manager for the city. New fault line discoveries have changed development patterns and even caused officials to tear down buildings now known to sit astride faults. In recent years, the California Geological Survey has more precisely mapped dozens of faults throughout the city, and the state has stepped in to mandate that new fault maps be created in areas where construction has increased. Is it safe to tunnel here? Why does LA’s mandatory retrofit program ignore vulnerable steel skyscrapers? LA’s next big earthquake could displace 270,000 people
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