On Thu 2005-01-27T07:45:33 +0000, Peter Bunclark hath writ:
> I guess the ice melted, flowed into the oceans and the whole planet is
> closer to hydrostatic equilibrium. The crustal rebound must have a
> counterpart in ocean-basin depressing (since presumably magma is an
> uncompressible liquid).

In brief, the ice load caused the mantle to flow toward the equator.
Lately it has been flowing back from the United States toward Canada,
from central Asia toward Siberia.  So the earth as ice skater is
pulling its arms in as it gets less oblate.

Try this for recent details and changes.
http://www.gsfc.nasa.gov/topstory/20020801gravityfield.html

--
Steve Allen          UCO/Lick Observatory       Santa Cruz, CA 95064
[EMAIL PROTECTED]      Voice: +1 831 459 3046     http://www.ucolick.org/~sla
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