Re: Expansion or Earth
- From: "N:dlzc D:aol T:com \(dlzc\)" <N: dlzc1 D:cox T:net@xxxxxxxxxx>
- Date: Tue, 12 Jul 2005 06:19:47 -0700
Dear Woodeenie:
"Woodeenie" <YAYAYA> wrote in message
news:42d3a93c$0$28024$afc38c87@xxxxxxxxxxxxxxxxxxxxxxx
> What do you guys think of the theories that over the last
> 70million years or that the earth is expanding. The breaking
> up of the original crust caused the continents. There is
> vast proof of this effect on other planets like mars/jupiter
> moons, where if you remove the flad 'water flow' looking
> areas both banks line up perfectly.
This "vast proof" simply indicates that there is a liquid core,
and plate tectonics occurs there as here.
> If this was true wouldn't gravity be slowly decreasing as
> we move further away from the center of mass? Anyone
> know if we could send a partical around and around in
> orbit or something for a long time and see if gravity is
> reducing if height above surface is constant.
We have the Moon, and its record over the last 2+ billion years
in "tidal rhythmites". If the Earth were expanding, then its
length-of-day would be increasing (to keep the same net angular
momentum). The length of day is increasing, but the lion's share
is being delivered to the Moon's orbit via the tides.
> I would assume the effect would be much less than
> gravity 'waves' einstien preticted so I am guessing we
> can't prove the earth expansion yet.
GPS verifies that the Earth is not expanding. There are areas
that contract (loss of subsurface water/oil), and some that
expand (influx of water or magma).
Something to consider is that there are "subduction zones", where
surface crust is driven down (presumably to become fresh core
material). There is such a zone off the coast of New Zealand.
Such phenomenon provide means for an *anomalous* behavior, such
as the drifting apart of entire continents. If the Earth were
expanding, so would be the continents, and such a rift as the
Atlantic would be unlikely to form.
David A. Smith
.
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