[OSM-talk] Antarctica coastline/shelf-ice import

[Jochen Topf]

On Tue, Mar 05, 2013 at 09:57:31AM -0500, Serge Wroclawski wrote:
> I worked on an Ozone monitoring instrument briefly in my career, and
> my understanding is that the polar ice caps change often.

No, they don't change all that much. Of course they change a little bit all the
time, the ice cap moves about 10m a year at the South Pole for instance, and
sometimes large icebergs break off from the shelf-ice, but for the resolution
we are talking about here, the resolution interesting for OSM, they are
basically static.

> Are you proposing that we change them every N months?

No.

> If so, I think we have better solutions at our disposal than trying to
> delete/reimport huge areas like this.

This is a misunderstanding. The reason the old data is bad is not that
Antarctica changed so much between then and now. I don't know why the old
data is so bad, maybe it is because satellite images etc. have improved
since then so better data could be derived.

Jochen
-- 
Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/  +49-721-388298