On 13 Mar 2011, at 13:44, "J. Tallman" <[email protected]> wrote:
>
> I just saw on the news that the recent quake in Japan shifted the earth's
> axis by 4 inches and that the main island of Japan moved nearly 8 feet.
>
> Could someone on the list put this into perspective? As an example, I would
> imagine that the legal descriptions for property lines based on precise
> lat/long coordinates now need to be revised - here in SW Ohio the plats in
> the county offices are all described this way.
The best description I have seen of how terrestrial location systems work is
this booklet published by the British Ordnance Survey. It has a lot more detail
about Britain than anywhere else but a lot of the techniques and technologies
are universal.
http://dotat.at/:/PM89C
Tony.
--
f.anthony.n.finch <[email protected]> http://dotat.at/
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