Most probably true. Conservation of rotational energy and momentum (a
couple of those basic laws of physics, don'tcha know) makes the
rotational speed stay pretty much the same before and after a quake,
even when Earth rings like a bell.

I would love to find out if anyone noted any disruptions in the
geomagnetic field or ionosphere (via shortwave anomalies or any other
method) just prior to the quake. This theory has been floating about
for awhile now, and it would be great to know. Coming close on the
heels of the *pretty big* south ocean quake near New Zealand, there
could have been two disruptions in short order.

Bruce Jensen