Digital Elev. Data Catalogue (3/3) [LONG!]
Bruce Gittings
is also available as rasters at 1:25K, 1:50K and 1:100K.
All prices quoted relate to May, 1993. The minimum order is for 300 DM.
Further information from:
Bayerisches Landesvermessungsamt Tel: +49 89 2129-1740
Alexandrastrasse 4 FAX: +49 89 2129-1537
D-80538 Munchen
Germany.
(37) A range of Global and regional terrain and bathymetric datasets are
distributed by the National Oceanic and Atmospheric Administration's
National Geophysical Data Center (NOAA/NGDC).
Bathymetric data includes point bathymetric soundings and gridded data for
U.S. coastal waters. In addition images of parts of the ocean bottoms are
available.
Substantial information about NGDC holdings is available through the WWW
at URL http://www.ngdc.noaa.gov. It is suggested that you select Marine
Geological and Geophysical Data, browse around for information on these
data or run a search for available ancillary data.
TerrainBase
-----------
NOAA/NGDC are about to release an elevation dataset called TerrainBase.
TerrainBase is a compilation of national, regional, and global public
domain DEMs created by numerous creators/authors/agencies, plus digital
bathymetric grids, along with a new mosaic global DEM at 5' lat-lon
gridding which incorporates the most appropriate of these input grids.
TerrainBase is currently entering limited Beta Test. A public Beta Test
is anticipated for the end of 1994. By "public Beta Test" NGDC mean that
the data can be acquired on CD-ROM for nominal cost. People that
contribute back to NOAA/NGDC new unrestricted DEMs to improve TerrainBase,
or sufficiently substantial new and valuable documentation or review
comments, may become official data contributors and be entitled to
updates of TerrainBase or other data (by agreement).
TerrainBase gives full credit to authors/contributors of DEMs. It also
encourages agencies which have high resolution restricted DEMs to
reprocess these to a lower resolution and contribute them as part of
TerrainBase.
The following tables lists the source data for TerrainBase, with
approximate coverage area, grid spacing, developer/contributor, and sizes
of datasets. However, not that TerrainBase is an integrated dataset which
will be available on CD-ROM; NOAA/NGDC have no plans to make the
individual source datasets available separately.
Coverage Grid Topography Developer/Contributor Total
Spacing /Bathymetry Samples
----------------- ------- ----------- ------------------------- --------
TerrainBase Global 5' Both NOAA/NGDC 9.3 M
Global Land 10' Topography FNOC and NCAR 2.3 M
Global Oceans 5' Bathymetry U.S. Naval 8.7 M
Oceanographic Office
North America 5' Both U.S. Defense 681,000
Mapping Agency (DMA)
Europe 5' Both U.S. DMA 616,000
Conterminous USA 30" Topography U.S. DMA 26.4 M
Italy 30" Both Servizio Geologico 1.9 M
Nazionale
Africa 5' Topography Austral. National Univ. 886,000
Greenland 5'x10' Topography Kort-og Matrikelstyrelsen 115,000
Australia 5' Topography Austral. National Univ. 207,000
Brazil Cerrados 2' Topography Centro Int. de 518,000
Region Agricultura Tropical
Chile/Peru/ 3' Both Cornell University 202,000
Chile Trench
Austria 1.5'x2.5' Topography Tech. Universitat Graz 32,000
Japan, Korea 5' Both U.S. DMA 37,000
Netherlands 3'x5' Topography Tech. Universiteit Delft 5,000
Alaskan Arctic 30" Bathymetry NOAA/CGS and NGDC 1.8 M
Ocean Coast
Bering Strait Coast 30" Bathymetry NOAA/CGS and NGDC 936,000
Alaska Pacific 30" Bathymetry NOAA/CGS and NGDC 9.5 M
Coast
US Atlantic Coast 30" Bathymetry NOAA/CGS and NGDC 5.1 M
Great Lakes 30" Bathymetry NOAA/CGS and NGDC 2.7 M
US Gulf of 30" Bathymetry NOAA/CGS and NGDC 2.0 M
Mexico Coast
US Pacific Coast 30" Bathymetry NOAA/CGS and NGDC 3.0 M
Hawaiian Islands 30" Bathymetry NOAA/CGS and NGDC 3.8 M
Coast
Puerto Rico Coast 30" Bathymetry NOAA/CGS and NGDC 360,000
Central Northwest 5' Both NOAA/CGS and NGDC 24,000
Territ., Canada
Madagascar 30" Topography USGS EROS Data Center 1.6 M
Dominican Rep., 30" Topography USGS EROS Data Center 635,000
Haiti & Puerto Rico
News on NGDC's developments with DEMs are also on the WWW. The URL for
Topographic Data is: http://www.ngdc.noaa.gov/seg/globsys/topo.html
Global Land One-kilometre Base Elevation Database Project (GLOBE)
-----------------------------------------------------------------
NGDC is also participating in the Global Land One-Kilometre Base Elevation
database project (GLOBE). This international effort aims to develop the
best available DEM at 1-km (actually 30" lat-lon) gridding, fully quality
controlled. The final product is scheduled for release in 1996. The
general aims of GLOBE are:
1. Develop a 1-km global DEM, by including the best available datasets
and by encouraging specialists to participate in production and review
of the data. The GLOBE DEM will be made available to the worldwide
research community, perhaps on 8-mm tape or CD-ROM. There may be two
versions of GLOBE:
"BAD GLOBE" based on the Best Available Data (BAD), even if some data
are restricted from general distribution. This version would be
distributed in accordance with whatever agreement is negotiated with
contributors of various copyright datasets. High-quality restricted
data may improve the usability of the DEM for people having access
permission. However, data not available to everyone are of limited
value in promoting scientific advances.
"GOOD GLOBE" based on Globally Only Open-access Data (GOOD). This is
the primary aim of GLOBE; to produce an unrestricted DEM that is the
most useful database for everyone.
2. Strengthen international collaboration in the development of
research-quality digital global data sets. Advance technical and
cultural capabilities for international collaboration in the
development of such data.
3. Strengthen social awareness of the need for optimal quality high-
resolution global topographic information, including the provision of
a focus for the timely release of currently restricted terrain data
sets.
4. Supply a "pathfinder" data set to the Earth observation community.
5. Develop a data structure (nested multi-resolution grid system) useful
for future enhancements such as might come from future topographic
satellite missions.
6. Give the Committee on Earth Observing Satellites Working Group on Data
(CEOS-WGD) a prototype in cooperatively improving vital data.
Input data and methods used for GLOBE are:
. Elevation contours from the 1:1,000,000 Operational Navigation Charts
digitized into the Digital Chart of the World (DCW), will be gridded at
1-km nominal latitude-longitude spacing.
. Currently available high-resolution DEMs at higher resolution than
GLOBE's will be sampled and inserted into GLOBE.
. DEMs derived from satellite imagery (stereo-optical and radar) and
altimetry will be added to GLOBE where applicable.
. As available data from the 3 sources above do not currently provide
global coverage, the GLOBE coverage will be filled out by resampling
lower-resolution DEMs (for which there is global coverage).
Documentation on sources, methods of derivation, quality control
procedures and data characteristics will be provided as text, figures and
maps. Additional data, such as global hydrological networks, land-sea
masks and terrain slope information, are expected to be developed as
byproduct datasets.
NGDC state that GLOBE would be considerably strengthened by additional
participation, contribution of DEMs, etc. They actively solicit
additional contributions; appropriate citations will be given to all
contributed data. NGDC would greatly appreciate any leads which readers
of this catalogue may have - I am happy to pass this information on.
Some notable GLOBE contributors include:
. USGS EROS Data Center, Sioux Falls, USA
. University College London, UK
. DLR-German Remote Sensing Data Center, Oberpfaffenhofen, Germany
For further information contact David A. Hastings, Secretary of GLOBE at
the address below or telephone him on 303 497-6729. Further details are
also on the WWW as URL http://www.ngdc.noaa.gov/seg/globsys/globe.html
NOAA/NGDC can be contacted at:
NOAA/NGDC Tel: (303) 497-6338 (bathymetry)
325 Broadway (303) 497-6084 (elevations)
Boulder, CO 80303, USA FAX: (303) 497-6513
Email: in...@ngdc.noaa.gov
NB. NOAA/NGDC will shortly announce a major new elevation data set.
(See also Note (5) for further information about NOAA/NGDC elevation data)
(38) The Belgian National Mapping Agency is the Institut Geographique National
(IGN). They have two point height datasets covering all of Belgium called
the "DTM Level I" and the "DTM Level II". The coordinate system for both
datasets is geographicals. The DTM Level I has a resolution is 6" x 3"
north of 50 degrees north and 3" x 3" south of 50 degrees north, while the
DTM Level II has a resolution is 2" x 1" north of 50 degrees north and 1"
x 1" south of 50 degrees north.
Both are provided in a Belgian National Standard exchange format on 1600
b.p.i. magnetic tape. English documentation is available. The cost for
DTM Level I is quoted as 250000 BFr, with DTM Level II at 500000 BFr,
which seems very expensive in both cases.
IGN are also part way through a programme to digitise all the line-work
from their topographic maps (presumably including contours) and creating a
feature-coded vector database. There are two different scales - 1:10K and
1:20K. The programme is only approx. 10% complete at present, with a
planned completion date for the entire country of 2000. The data was
original captured using photogrammetery and is in a Lambert (conformal)
co-ordinate system. Costs and formats are unknown, although the data is
thought to be available on 1600 b.p.i. magnetic tape.
For further information contact:
Institut Geographique National Tel: ?
Abbaye de la Cambre 13 FAX: ?
B-1050 Bruxelles
Belgium
(39) The Australian Department of Environment and Natural Resources has data
available for the Murray River flood-plain.
A medium resolution (5m) CD-ROM set (three CD-ROMs) contains: 250 digital
orthophotos, 100m mesh DEM, digital map index, display software (using
Terrascan Lite) with print options examples of merged orthophotos and
satellite imagery.
The DTM data has been mathematically modelled on a 100m mesh grid, from
photogrammetrically derived heights. The orthophoto maps are digital
imagery derived from aerial photography, corrected for camera and
landscape distortions. The imagery can be easily input to a PC, GIS or
simply viewed and processed for planning, development control and
management. The images are stored as generic 8-bit one band data, with
additional ASCII headers for ingestion into various image display systems,
e.g. Terrascan (.tsw), Arc/Info (.hdr) and ERMapper (.ers).
Additional high resolution (1.25m) CDs each contain between 5-7 images and
vary between 80-120Mb. Other data formats can be accomodated on request.
An examples directory contains a data set of Landsat TM data which is
merged with the digital orthophotos at a 10m pixel size.
Cost is AU$400 (including postage and handling) for the 3 CD set at 5m
resolution. The high resolution CDs cost AU$200 each.
Enquiries to and purchase from:
Tom Tadrowski Tel: (61)-68-226-4855
Image Data Services, FAX: (61)-68-226-4906
Resource Information Group,
Department of Environment and Natural Resources
282 Richmond Road, Netley,
South Australia, Australia, 5037
(40) A complete data set of the Philippines is available from NAMRIA, the
National Mapping Agency of the Philippines. This data was produced by the
Swedish Space Corporation using SPOT data in 1987.
Contact:
Ricardo Bina, Tel: + 632 8105459
NAMRIA
(41) There is a complete data set of Sweden produced by Swedish Space
Corporation (SSC) a few years ago from LANDSAT DATA, plus a CD series of
Sweden by the National Land Survey. SSC have also carried out work for a
number of other countries in Africa. They will supply lists of completed
projects on request.
Contact SSC at + 468 6276450. Email via postm...@ssc.se.
(42) The Hellenic Military Geographical Service produce digital contour data
for Greece. The scale is quoted as 1:5000, although I suspect they are
actually 1:50000, because the contour intervl is 20m. There is currently
only limited availability (20% of the country), with the planned
programme completion in 2000. The data are held as vectors and are
available in DXF, Arc/Info or ASCII formats on floppy disk or magnetic
tape. Costs are 60000 Greek Drachmas per sheet. The co-ordinate system
and availability of documentation are unknown.
For further details, contact:
Hellenic Military Geographical Service Tel: ?
Pedion Areos FAX: ?
GR-11362 Athinai
Greece
DEM SOFTWARE
------------
- Peter Guth has developed a super little PC-based program for DEM Mapping
and analysis called MICRODEM+ which is freely available. MICRODEM+ reads
USGS, DMA DTED, NOAA EEZ, TerraBase and ASCII xyz DEM formats, in addition
to satellite image data (TIFF, LandSat and SPOT) and map data in USGS DLG
or US Census Bureau TIGER formats. It forms an impressive geomorphometric
toolkit. Contour, slope, aspect and concavity/convexity maps can all be
produced (with several different slope and aspect algorithms), along with
cross-sections through to 3D perspective displays, with overlain thematic
data and fully animated fly through capabilities. Semi-variograms, fast
fourier transforms, statistical slope orientations, frequencies, basin
delineation are all possible. On top of all of that, the effects of
different map projections can be demonstrated and even animated
continental drift simulations are included. Demonstration data is
provided. There are also other programs including TS-PLOT and, for
oceanography, WAVES, TIDES, DUCK beach profiles and MARINE GEOLOGY.
These programs are all available via anonymous ftp from ftp.nadn.navy.mil
(Numeric IP address is 131.121.163.70), in the pub/oceano directory. Then
choose either the microdem and oceanlab directories.
Peter will be adding additional programs, data and documentation as time
goes on and providing updated versions of the programs. He is interested
in suggestions, comments and ideas on how to improve the programs.
Contact:
Peter L. Guth Email: pg...@charleston.nadn.navy.mil
Oceanography Department
U.S. Naval Academy
- Kevin Wooley at the University of Stirling (UK) has produced a shareware
package called 'Landscape Explorer'. You can get it from via ftp to
"garbo.uwasa.fi" in the directory /windows/graphics/land221.zip.
It's specifically designed for showing landscape surfaces, and can handle
GIS information. Currently it can handle most USGS DEM data and UK OS NTF
data.
Further information rom Dr Kevin J Woolley <k.j.w...@uk.ac.stir>
Other software packages (in no particular order) which support a reasonable
level of terrain modelling functionality include:
LaserScan Horizon (DEM and TVES components of LAMPS Mapping System)
Arc/Info TIN Module
GRASS
ERDAS Imagine
Intergraph MicroStation
MOSS
The only package which I am aware of which support true 3D functionality in a
GIS-related environment is:
IVM (Interactive Volume Modeller)
COPYRIGHT STATEMENT
-------------------
(c) Bruce M. Gittings, 1994.
Department of Geography, The University of Edinburgh, United Kingdom.
The information contained herein may be freely distributed by any means provided
that this copyright notice is retained. No other use is permitted without prior
reference to the copyright holder. Specifically, this information may not be
incorporated in any publication, document, report or manual which is sold or
otherwise traded (whether for profit or not) or included as part of a package or
product which is so sold or traded.
DISCLAIMER
----------
The University of Edinburgh and I accept no responsibility for any errors in
this list, nor do we endorse any of the data sets or software listed above in
any way.
I have no further information beyond that listed above, and am unable to help
in either obtaining further details or acquiring the data themselves so please
don't e-mail me requesting same!
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