Great news: Reports of a tectonic fault’s death in San Diego were exaggerated

Great news: Reports of a tectonic fault’s death in San Diego were exaggerated
San Diego, viewed from the carrier piers at Naval Air Station North Island (Coronado). The Rose Canyon fault runs right through downtown and the water on the right in front of the Coronado Bridge. Pixabay

[Ed. – This is the third SOCAL fault in the last five years to be determined by a new study to not be so inactive after all.  And that’s in addition to the one that runs much deeper than thought through Orange County (Newport-Inglewood; bonus: primordial helium and blueschist!), and the one offshore in the San Diego Trough that had started releasing methane before 2012.]

The conventional thinking has long been that the San Diego region faces less danger from a devastating earthquake than the Los Angeles or San Francisco areas.

But a new landmark study shows just how a fault running through the heart of San Diego poses a much more serious threat than believed a generation ago.

Researchers examined the effects of the Rose Canyon fault producing a plausible magnitude 6.9 earthquake, threatening the civic and financial center of California’s second largest city and the nation’s fourth biggest naval base, causing liquefaction and landslides.

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