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LA Quake Stress Hits 1,000-Year High
6 Jul
Summary
- Stress on California faults reaches highest level in a millennium.
- A magnitude 7 or larger quake could impact 24 million people.
- Critical infrastructure at Cajon Pass is vulnerable to rupture.
New research reveals that stress levels along key segments of California's San Andreas and San Jacinto fault systems have reached their highest point in at least 1,000 years. Computer simulations analyzing stress accumulation over the past millennium indicate that two fault segments near the San Bernardino Mountains are critically stressed and could be nearing a rupture.
Scientists emphasize that while an earthquake is not imminent, the findings underscore the long-standing warning for Southern California to remain prepared for a powerful seismic event. A magnitude 7 or larger earthquake could threaten approximately 24 million people, including those in greater Los Angeles and the Inland Empire. The Cajon Pass, an intersection of these major faults and a vital corridor for transportation and energy infrastructure, is identified as a particularly vulnerable area. A rupture here could lead to extensive disruptions beyond immediate shaking, impacting regional dependent systems.
