Simon,
Thanks for the information on the dem. I was hoping
to receive a reply from an Australian source for the
best information available.
Since my original post, I found another 5' worldwide dem with bathymetry.
It is produced by the National Geophysical Data Center in Boulder,
CO, USA. The name of the model is "TerrainBase" and is a compilation of
many models. The Australian portion is from the Hutchinson model.
This dem fixes many of the errors in ETOPO5.
Wayne Gibson
Oregon State University
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Date: Thu, 4 Aug 1994 13:17:02 +0800
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From: s.cox@dem.csiro.au (Simon Cox)
Subject: Re: dem for Australia>Dear GRASS Users,
>
>Can anyone point me to an ftp site for an Australian dem?
>(Preferably in lat/lon at 5 arc minutes)
>
>I already have ETOPO5, but there are stripes of missing data
>in N Australia and S. New Guinea.
>There is a better one available from AGSO, based on gridding up the gravity
stations. Last week I visited AGSO (the geological survey) and had a
meeting with
the person who is producing the new DEM - it is based on the gravity
stations suplemented by all the spot heights from the national mapping, and
gridded using Hutchinson's algorithm - it will be at about ? 3 arc-seconds
resolution (from memory). However, the agencies involved (AGSO and AUSLIG)
have a cost recovery requirement imposed by the federal government, so when
this becomes available it will cost real $$. Not their choice, so no flames.You guys in the US probably don't realise how lucky you are with the US
policy of cost-of-reproduction. I am involved in several cooperative
projects with the peopls who are custodians of various datasets, and even I
have to sign contracts, non-transfer/disclosure agreements, etc, and they
get a $ credit for any data that I use.SO, for the moment, etopo5 is about all that is available.
Regards Simon Cox
____
__________________________________________________________________
Dr Simon Cox __ L
CSIRO Div. Exploration & Mining ,~' L_|\ Australian
39 Fairway, PO Box 437, ;-' \ Geodynamics
Nedlands, WA 6009, Australia ( \ Cooperative
Phone +61 9 389 8421 + ___ / Research
Fax +61 9 389 1906 L~~' "\__/ Centre
s.cox@dem.csiro.au 7
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