3D Groundwater Management - case studies: 1. 3D Visualisation using VRML 2. Profile GIS - introducing rthe Profile Database as a aquifer information solution

1. 3D Visualisation
case study – Groundwater
Management
Milos Pelikan

2. How to you communicate complex 3D concepts to non-GIS
policy makers?

3. Example – Groundwater Management Units
Issue
Groundwater management units are 3D by nature
Groundwater management is the management of volumes
not areas
Standard GIS is 2D
Policy makers are not GIS technicians
3D GIS is complex and not widely available

4. Solution – web-based 3D schematic
3D Groundwater Management Visualisation:
Web-based Solution –
VRML, HTML and Java Script
Schematic approach
Integrated with external information
http://www.spatialvision.com.au/groundwater/

5. Solution – web-based 3D schematic
Linked
DSE 2D Groundwater Information SV 3D Groundwater Schematic

6. Solution – web-based 3D solution
Web-based Solution – VRML, HTML and Java Script

7. Solution – 3D schematic approach

8. Solution – external information links

9. Solution – external information links

10. Lessons learnt
3D can be used to successfully communicate
complex ideas
“Reality” is not always the optimal solution
Simplification
Integration creates a dynamic product
Conversion from GIS format to 3D format is
still a work in progress

11. Example – Aquifer Profile Databases
Issue
Aquifer relationships are 3D by nature
Aquifer configuration is fundamental to management
Standard GIS shows a planar viewpoint
Standard profiles a not geographic or require specialty software

12. Solution – profile GIS
Profile GIS:
GIS spaces based on a transect across the standard planar view
Replace x-coordinate ,y-coordinate with distance, depth
Seed multiple attributes to remapped sample points enabling
profile query

13. Solution – profile GIS = transects
Solution based on
classic Hydrogeological
mapping
Planar map
(standard GIS)
Profile map
(transect –
representative
diagrams not spatial)

14. Solution – profile GIS (transects)
Create sample
points on transect
using GIS functions
Seed thematic
information to points
Add x,y coordinates

15. Solution – profile GIS (getting vertical)
depth
Distance along transect

16. Solution – profile GIS (getting vertical)
sample points re-mapped to
profile space in separate data
frame
Vertical & horizontal
exaggeration
Sample points (profile) can be
symbolised by attributes using
standard GIS

17. Solution – profile GIS (the result)

18. Summary – profile GIS

19. Lessons learnt
• map-based approach • gis-based approach
• time-consuming • automatable
• one-off • integrated

20. Key Players
http://www.spatialvision.com.au/groundwater/