[Imports] Antarctica coastline/shelf-ice import

Jochen Topf jochen at remote.org
Mon Mar 18 08:57:40 UTC 2013


Over the last weekend we have completed the import. Well, Christoph
did all the work, I was mostly along for the ride. Thanks Christoph!

These are the changesets:

Details of the import:

This map already has all the current data and mostly current tiles:

New coastlines are available from:


On Tue, Mar 12, 2013 at 12:16:01PM +0100, Christoph Hormann wrote:
> Date: Tue, 12 Mar 2013 12:16:01 +0100
> From: Christoph Hormann <chris_hormann at gmx.de>
> To: imports at openstreetmap.org
> Subject: [Imports] Antarctica coastline/shelf-ice import
> Hello,
> A week ago we announced the plan to import better coastline and new
> ice shelf data for Antarctica on this list. We also sent mails about
> these plans to tagging at openstreetmap.org, talk at openstreetmap.org, and
> nzopengis at googlegroups.com. (The last is the New Zealand OSM list,
> people from there had been importing official New Zealand Government
> data to Antarctica and we wanted to coordinate with them.)
> Please see the wiki for the current state of this proposal:
> http://wiki.openstreetmap.org/wiki/Antarctica/Import_2013
> There were a few questions about our plans and some objections to the
> planned removal of the Antarctica-wide glacier multipolygon and the
> change of the coastline from the "grounding line" to the "calving
> line". We answered all these mails and explained our reasoning.   The 
> coastline closing question which has been discussed as well won't 
> seriously affect the import since we can artificially close it if 
> necessary although we would prefer not to.  We haven't heard any 
> further arguments or objections in the last days so we believe people 
> are generally happy with our plans.
> If we don't see any objections in the next days, we will do the
> import on the next weekend (March 16./17.). The import will be done
> according to the plan outlined on the wiki page, a special user will
> be used for the import and it will be done in a single or very few
> changesets, so if there are any problems it is easy to revert.
> One further issue: Before announcing the import we had contacted the 
> SCAR (Scientific Committee on Antarctic Research) concerning possible 
> use of the Antarctic Digital Database (http://www.add.scar.org/). This 
> data is more detailed and mostly newer than what we plan to import now 
> but it is assembled from various sources making it somewhat 
> non-uniform. Last week, after our announcement here we got permission 
> for using their data in OSM.
> We have looked into this data but nevertheless decided to "stick to the 
> plan" and import the MOA data first. Here are the reasons:
> The MOA data is much better than what we currently have and it can
> be imported all at once. We can test the new tagging scheme with it and
> we can easily revert if there are problems. The ADD data is 
> significantly more detailed and our first analysis revealed various 
> inconsistencies that need to be dealt with.  This means there is more 
> work involved preparing it for import and it will be necessary to do 
> this in several pieces.  This will be much easier with a fairly 
> accurate data set and tagging already in place.
> So we want to do the MOA import as planned - although we might leave out 
> those islands that require significant hand work to avoid the need to 
> do this twice.  Afterwards we can work on the ADD data, but that will 
> be a separate effort. Maybe it can be done as a community effort where 
> people check and import pieces of the data.
> -- 
> Christoph Hormann
> http://www.imagico.de/
> _______________________________________________
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> Imports at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/imports

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

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