Gary -
In reply to your post here:
http://www.fivedoves.com/letters/march2011/garyn317.htm
Here's the link to the dream I posted in which I heard the word Subduction.
http://www.fivedoves.com/letters/feb2011/clay223.htm
Since I heard the word twice in the dream perhaps it was referring to the Christ Church and Japan quakes, in fairly close succession.