500 metre interval contours of Antarctica derived from ERS radar altimetry data.Entry ID: ERS_CONT_500_ANT
Abstract: 500 metre interval contours of the Antarctic continent derived from slope corrected orthometric heights that were captured using ERS radar altimetry.
Start Date: 2003-01-01Stop Date: 2003-01-31
Latitude Resolution: 5000 m
Longitude Resolution: 5000 m
Vertical Resolution: 0.2 m
ISO Topic Category
Quality This shapefile of contours was interpolated from a triangulated irregular network that was generated from slope corrected orthometric heights of Antarctica.
These heights were derived using ERS radar altimetry.
The ArcView 3D analyst was used to interpolate the contours. The resulting shapefile was converted to an Arc/Info coverage. The Arcedit generalize command was used ... to thin the contours using a tolerance of 500 metres. The resulting contours were splined with a grain tolerance of 100. Finally the contours were manually cleaned and then generalised with a tolerance of 10 metres. The void area at the centre of the continent was removed using the erase command. A certainty value of approximate was assigned to contours that fell within areas of invalid heights as indicated by the reliability shapefile (refer to metadata record ERS_REL_ANT).
On completion, the coverage was converted to a shapefile.
Access Constraints Available unprojected or in a Polar Stereographic projection with true scale at 71 degrees S.
ArcView shapefiles are available on the web (refer to the url below). Conditions apply.
Use Constraints This data set conforms to the PICCCBY Attribution License
The Australian Antarctic Data Centre must be acknowledged.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 2.4 MB
Distribution Format: .shp
Role: TECHNICAL CONTACT
Phone: +61 3 6232 3577
Fax: +61 3 6232 3351
Email: gis at aad.gov.au
Australian Antarctic Division 203 Channel Highway
Province or State: Tasmania
Postal Code: 7050
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2003-02-11
Last DIF Revision Date: 2014-01-10