[DUG] Map Question

[Phil Scadden]

> Just as an aside what is the best source of detailed contour maps online 
> and what is the level of detail they go to?

You cant separate this from "for where". National coverage is available
with 20m contour lines from Linz topo, available both as georeferenced raster
scans and as vector contours. These are the raw data - lines traced from
photogrammetry rather than calculated from a DTM.

However, for numerous areas, particularly urban areas, there are
DTMs with resolution of about 2m or contours at I think a 5m. (I don't have
a catalogue of whats available handy). These are from the local authority.

I havent yet looked at what might be available GRACE satellite altimetry
so far... Bits of the country are also covered by SAR.

----------------------------------------------------------
Phil Scadden, Institute of Geological and Nuclear Sciences
764 Cumberland St, Private Bag 1930, Dunedin, New Zealand
Ph +64 3 4799663, fax +64 3 477 5232