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Antarctic Digital Database A Paul R Cooper (GIS Manager)

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1 Antarctic Digital Database A Paul R Cooper (GIS Manager)

2 Outline What is the Antarctic Digital database? How has it developed? How is it accessed?

3 What is the ADD? A topographic database Primarily a vector database Originally derived from published maps Maintained for SCAR by BAS

4 What does the ADD contain? 14 layers including Coast Rock outcrop Contours

5 What are the ADDs sources? Published maps –7 nations supplied digital data. –3 nations gave permission for maps to be digitised. Ice sheets derived from SPRI folio –digitised from 1: compilation sheets. Coastline updated from remotely sensed images.

6 Development of the ADD Version 1.0 was published on CD in 1993 Version 2.0 was published on the internet in July Version 3.0 was published in July Version 4.0 was published in August 2002 Version 4.1 November 2003 Version 5 went live in August 2007 Incremental updates since then.

7 Version 2.0 First version on the Internet – Included many structural corrections. Some new data between 0 and 90°W.

8 Version 3.0 The first major upgrade to the content of the ADD Ice sheet contours replaced –Based on altimetric DEM provided by Byrd Polar Research Center. –Result of collaboration between BPRC and BAS

9 Improved contours

10 Version 4.0 New coastline for the sector between 30°W and 168°W New data for Prince Charles Mountains New coastline for Antarctic Peninsula Position of Antarctic Peninsula data corrected.

11 Version 4.1 New rock outcrop for the Antarctic Peninsula. Detailed corrections to coast in Antarctic Peninsula

12 Version 5.0 Complete revision of the web site Provision of Web Feature service Provision of Web Map service New data including: –Coastal change in the Antarctic peninsula –Subantarctic Islands South Georgia Heard and Macquarie Islands Made compatible with the Antarctic Spatial Data Infrastructure Went Live in August 2007 Continuing incremental upgrades

13 ADD Data management Originally held as tiled ARC/INFO coverages Still edited and maintained as coverages –Maintained using ESRI software Working copy held in PostgreSQL/PostGIS

14 ADD and data standards ADD originated when there were no standards to follow! Now provided in wide variety of OGC compliant formats including: –WFS (OGC WMS 1.1.1) –WMS (OGC WFS 1.0 ) –GML (ISO and OGC) –KML (became OGC standard recently) Working towards compliance with: –ISO (Metadata) –ISO (Antarctic Feature Catalogue, maintained by Australia)

15 Added Value Products Antarctic Maps for Garmin GPS –BAS has created maps for use in Garmin GPS with map display Hill shaded topography Contours (labelled where accurate) Rock outcrop Coast, ice shelf, ice rumple –Field tested field season –Modifications in line with experience being implemented –Contact BAS for further information –Will only be made available to experienced Antarctic operators.

16 The Future? Improve data content Add new data layers Improve access Integrate with other data sources: –Composite Gazetteer of Antarctica –UK Antarctic Placenames Committee

17 Conclusions ADD provides the best topographic data for the whole of Antarctica. ADD provides the essential underpinning for: –Operations. –Scientific investigations. ADD is an ongoing programme. –Mapping Antarctica is a work in progress!

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