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Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 Report on Geodetic Control Database project activities 2000 - 2002.

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Presentation on theme: "Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 Report on Geodetic Control Database project activities 2000 - 2002."— Presentation transcript:

1 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 Report on Geodetic Control Database project activities 2000 - 2002

2 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 Program Activities Develop high level metadata index Develop template for detailed distributed database –control identification information –tide gauge connection information

3 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 NZ contribution Paper by John Ritchie (circulated on ggi-l listserver for comments) Lack of personnel to continue project

4 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 Australian contribution National Mapping Division, Geoscience Australia had expertise in Mapserver software and technology Using data collected, transformed into ArcInfo files and then into Mapserver format

5 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 Mapserver Open source code developed by University of Michigan – Freely available OGC compliant software –ISO TC211 compliant Projection file for Antarctica has been developed

6 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002

7 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002

8 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 Issues encountered Lack of standardised fields of data Position and Name(s) and/or code Height Positional uncertainty Ellipsoidal height Ellipsoidal uncertainty Height uncertainty Height Datum Mean sea level height Name and position

9 Glenn JohnstoneXXVI SCAR Shanghai, China, July 2002 Future issues What fields of information should be included? (ie. a standardised model) Further expansion required? –Other countries? –other types of control? (connections to tide gauges) –distributed database required?


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