Seismologists monitoring the San Andreas Fault have observed an increase in activity on the fault since two strong quakes in 2003 and 2004. The number of tremors has since declined, but is still far higher than prior to the 2003 quake. There is concern, since the section of the San Andreas with the most tremor activity produced a 7.8 earthquake in 1857. Scientists cannot say whether or not a major quake is eminent, but remain concerned due to the hightened activity levels in recent years.
The questioner probably means “another really big earthquake,” but in terms of earthquakes at all, the San Andreas is due for, and will have, many earthquakes every day.
Scientists have been saying for years that Southern California is overdue for it’s next big earthquake, much to the effect of the one back in the 1990’s. There have been many small tremors in the region in the last year, though none were severe in any way. The San Andreas Fault is where two tectonic plates of the Earth’s crust meet, and runs along many heavily populated areas such as Los Angeles. No one is sure when or if a huge earthquake will strike, but Southern California has taken many preparations in recent years by adjusting building code regulations for most homes and large buildings to be built on “rollers.” These rollers are architectural safeguards that help absorb the shaking motion caused by earthquakes to keep the foundation from crumbling and the buildings from falling over, reducing property and collateral damage.
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