Wednesday, 28 February 2018

Cascadia - what you need to know

Cascadia - What will Happen One Day

I came across this article today and found it very interesting. It led me to this one which says the same but is much better written. 

They describe what has happens when the Juan de Fuca plate moves under the North American plate. It does so jerkily. 

The last time it moved was about 9 PM on the night of 26th January 1700. It produced a magnitude 9.0 earthquake which sent a devastating tsunami across the Pacific to Japan. 

It was also devastating in the Pacific North West but there were no Europeans to record it and Native American stories were ignored. 

So in the earthquake free interval since 1700 development in the area has boomed and for most of that time fear of earthquakes did not exist. The consequences are imagined in the second article.

(The first article contains the phrase "It's about 1,000 kilometers (621 miles) long," How does about 1,000 become exactly 621? This is false conversion accuracy and it gets up my nose! Sorry (not really) for the rant.)

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