posted on Feb, 24 2011 @ 06:34 AM
I think that in order to state that volcanic doom looms for Christchurch as you say, it might be prudent to establish first that the recent quakes are
due to volcanic activity, as opposed to tectonic/fault activity. And therein lies the problem with this idea. I'm not saying it's not possible, but
One reason is the recent 7.1. In order to produce such a large earthquake, the size of that one alone would suggest tectonic activity rather than
volcanic activity, as it takes a fault of considerable length to even produce such a quake. And the Greendale Fault, just to the west of Christchurch
would be such a culprit.
Also supporting tectonic rather than volcanic activity is the issue that such large earthquakes are usually associated with tectonic activity. While
there may be exceptions, there are few volcanoes on the planet with enough magma to generate such large earthquakes- and I don't believe any of the
ones in New Zealand qualify- at least to known history.
So I am sorry to say I must disagree with the thread premise in itself.