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).
Pete.
On Thu, 27 Jan 2005, Clive D.W. Feather wrote:
> Markus Kuhn said:
> > The US and UK are
> > actually no different from that, except that the subtle differences
> > between GMT and UTC have escaped political attention in these two
> > countries so far, and as a result, they still have a technically rather
> > vague definition of time in their law books,
>
> Actually, UK law is clear that civil time is GMT/GMT+1.
>
> Last night I found myself talking to a UK legislator on the matter of UTC
> versus GMT. We got as far as the quadratic nature of the TAI-UT1
> difference, and that it was smaller than expected because - according to my
> reading - of crustal rebound following the last ice age.
>
> At which point we were both confused about the physics involved. If the
> crust is rebounding after being compressed by ice sheets, surely the
> earth's moment of inertia will increase and the rotation should slow *more*
> than otherwise expected. So can someone unconfuse us, please?
>
> --
> Clive D.W. Feather | Work: <clive_at_demon.net> | Tel: +44 20 8495 6138
> Internet Expert | Home: <clive_at_davros.org> | Fax: +44 870 051 9937
> Demon Internet | WWW: http://www.davros.org | Mobile: +44 7973 377646
> Thus plc | |
>
Received on Wed Jan 26 2005 - 23:46:09 PST