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In article <ZExAd.1374$Cc.229@newsread3.news.pas.earthlink.net>,
fmsfnf@jfoops.net says...
> "keith" <krw@att.bizzzz> wrote in message
> news😛an.2004.12.29.03.34.07.620639@att.bizzzz...
> >
> > > RedNova News - Earthquake Rattled Earth Orbit
> > > http://www.rednova.com/news/display/?id=114564
> >
> > I find this sort of reporting amazing (not really, considering the
> hoopla
> > over "global warming"). Was there a significant change in the COG?
> Was
> > there matter ejected from the Earth that would change the net energy
> of
> > the (rest of the) Earth? What net energy was imparted to the orbit
> that
> > caused the change? Where did said energy come from?
>
> Keith, consider an ice skater. When entering a spin, the arms are
> outstretched and the spin is slow. When the arms are pulled in, the
> spin rate increases dramatically. This is due to conservation of
> angular momentum.
Ok, but the ice skater is still orbiting around the sun at the same
rate. ...and rotating around the earth at the same rate.
> Rock is a lot heavier than water. If you cut off Mt. Everest at the
> base and drop it into the Mindinao Trench, the spin rate of the earth
> will increase significantly because more of the mass of the Earth
> moves toward its center. This, in effect, is what happened a couple
> of days ago: one tectonic plate dove under another, causing the whole
> tectonic plate near the junction to drop (thus causing the tidal
> wave). So the earth's spin rate increases.
....but not it's orbit. As I said, I'm told that the day changed by
three microseconds, but the year?
> The orbital effect was much smaller, but yes, the COG did change
> [evidently significantly enough to measure]. As you indicate, the
> earth-system's [including the mass of the moon] COG follows a highly
> stable elliptical orbit around the sun. Cut off Everest and drop it
> in the Trench and the COG does change - and that (slightly) changes
> the orbit.
The COG of the E-M system is still in the same orbit around the sun,
even if the COG shifted relative to the earth's center, so no, I don't
buy what you're selling. ;-)
> Keith, next time send me my Xmas gift a few days earlier? ;-)
You mean it hasn't gotten there yet? How about last years? ;-)
> Felger Carbon
> who remembers when there weren't any tectonic plates
You *are* old. ;-) We learned about them in first grade along with the
strange "coincidence" that the Africa coastline looks strangely like it
would fit into S. America.
--
Keith
In article <ZExAd.1374$Cc.229@newsread3.news.pas.earthlink.net>,
fmsfnf@jfoops.net says...
> "keith" <krw@att.bizzzz> wrote in message
> news😛an.2004.12.29.03.34.07.620639@att.bizzzz...
> >
> > > RedNova News - Earthquake Rattled Earth Orbit
> > > http://www.rednova.com/news/display/?id=114564
> >
> > I find this sort of reporting amazing (not really, considering the
> hoopla
> > over "global warming"). Was there a significant change in the COG?
> Was
> > there matter ejected from the Earth that would change the net energy
> of
> > the (rest of the) Earth? What net energy was imparted to the orbit
> that
> > caused the change? Where did said energy come from?
>
> Keith, consider an ice skater. When entering a spin, the arms are
> outstretched and the spin is slow. When the arms are pulled in, the
> spin rate increases dramatically. This is due to conservation of
> angular momentum.
Ok, but the ice skater is still orbiting around the sun at the same
rate. ...and rotating around the earth at the same rate.
> Rock is a lot heavier than water. If you cut off Mt. Everest at the
> base and drop it into the Mindinao Trench, the spin rate of the earth
> will increase significantly because more of the mass of the Earth
> moves toward its center. This, in effect, is what happened a couple
> of days ago: one tectonic plate dove under another, causing the whole
> tectonic plate near the junction to drop (thus causing the tidal
> wave). So the earth's spin rate increases.
....but not it's orbit. As I said, I'm told that the day changed by
three microseconds, but the year?
> The orbital effect was much smaller, but yes, the COG did change
> [evidently significantly enough to measure]. As you indicate, the
> earth-system's [including the mass of the moon] COG follows a highly
> stable elliptical orbit around the sun. Cut off Everest and drop it
> in the Trench and the COG does change - and that (slightly) changes
> the orbit.
The COG of the E-M system is still in the same orbit around the sun,
even if the COG shifted relative to the earth's center, so no, I don't
buy what you're selling. ;-)
> Keith, next time send me my Xmas gift a few days earlier? ;-)
You mean it hasn't gotten there yet? How about last years? ;-)
> Felger Carbon
> who remembers when there weren't any tectonic plates
You *are* old. ;-) We learned about them in first grade along with the
strange "coincidence" that the Africa coastline looks strangely like it
would fit into S. America.
--
Keith