Sunday, January 24, 2016

Latest Toronto seismicity

Lest we forget.  Alaska just had an M7.1 that woke everybody up, but no damage.  That's the trouble with preparing for earthquakes in this neck of the woods -- those in power say we're no Alaska or California, blah, blah.  Problem is that a rare earthquake for them is an 8 or 9, for us it's a 6 or 7.


This is the latest seismicity map for Southern Ontario.  The two lines mirror the two zones in Oklahoma, and show the famous 'Enid Gap'.  These lines are the ancient Precambrian megathrusts, and are responsible for all the big seismicity in this area, including New Madrid.  We imaged them clearly in Canada, but nobody in the US has made the effort.

So OK, New Madrid, and Toronto have the same mechanism, but the difference is the rate. (Sounds like an old joke).  I'm just noting this, and I'm not going to engage in useless lip-flapping again.

** I have said before that Pickering has no hope with a 7.  I had hoped it would die soon, but will extended forever.  :(

ps.  the vw saga, the Niagara Tunnel to Nowhere, Oklahoma, all show how you can successfully avoid basic physics.  :)

pps.  At the very least, people in the GTA should secure their knick-knacks with seismic wax.  This just happened in Alaska.


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