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Audio by title cascadia_s_fault


Locus Focus
program date: 
Mon, 07/02/2012

It used to be that when people talked about the "Big One," they were referring to the next giant earthquake along the San Andreas Fault, that in the parlance of the time, might cause California to fall into the ocean. It turns out that the fault to watch is the much longer and potentially damaging Cascadia Subduction Zone, a fracture in the earth’s crust roughly 60 miles offshore, that starts just north of the San Andreas Fault in northern California and runs all the way to northern Vancouver Island. This fault generates a monster earthquake about every 500 years. The last time it shook was in 1700 and there is roughly a 30 percent chance that just such a disaster could happen within the next fifty years.

43:27 minutes (59.67 MB)


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