> I hope our fellow posters in the San Francisco area are all ok, or as ok as they can be.
>
> Brings back bad memories of 4 Sept 2010 and 22 Feb 2011 here in Christchurch, NZ
References:
<http://earthquake.usgs.gov/earthquakes/eventpage/nc72282711#summary>
<http://earthquake.usgs.gov/earthquakes/eventpage/nc72282711#pager>
<http://earthquake.usgs.gov/earthquakes/eventpage/nc72282711#shakemap>
The major *geologic/seismic* difference is that the California coastal system is
a plate boundary that is sliding sideways and the New Zealand system is a megathrust subduction zone, which typically can produce the worst shakers.
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Jim Saklad mailto:jimdoc@icloud.com
Posted by: Jim Saklad <jimdoc@icloud.com>
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