Groundwater Management 3D Analysis and Visualisation

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Groundwater Management3D Analysis and
Visualisation

• Milos Pelikan
• Tim Germanchis

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Introduction

• Groundwater Management in Victoria
• Management areas (GMU) defined using surface
  features
• Each GMU is a legal entity with specific
  conditions related to usage, etc
• Created as required and tend to be clustered
• GMUs overlap (management representation of
  aquifers, extraction areas)
• Issue
• Information related to groundwater management in
  a 2D GIS environment is difficult to mange and
  understand (visualise).

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Introduction

• Project setup to address
• Audit of current information an analysis of the
  vertical and horizontal distribution of GMUs
• Develop a prototype 3D environment to visualise
  and explore the distribution and relationships of
  the GMU network across the state
• Project Components
• Review Data Structure
• Physical Overlap and Vertical Gap Analysis
• Visualisation Prototype in 3D

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3D Analysis - Data Structure

• Moving from overlapping polygons to layers of
  cells
• Resolution is 250m x 250m
• Vertical layer intervals defined by GMU
  thickness

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3D Analysis - Physical Overlaps

• Locating Physical Overlaps in GMUs
• GMUs are unique in 3 dimensions and cannot
  overlap
• Conversion of polygon topology to Depth Layers to
  remove a dimension (vertical)

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3D Analysis - Physical Overlaps

• Workflow for Physical Overlaps Analysis

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3D Analysis - Physical Overlaps
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3D Analysis - Vertical Gaps

• The concept of a vertical gap
• Needs a classification scheme

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3D Analysis - Vertical Gaps
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3D Analysis - Vertical Gaps

• Vertical Gap Classification

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3D Analysis - Vertical Gaps

• Workflow for Vertical Gap Analysis

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3D Analysis - Vertical Gaps
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3D Visualisation

• Why 3D?
• Requirement create a prototype of an
  interactive medium that enables non-technical
  policy/planners to view the current groundwater
  management regime across Victoria with the view
  to assisting in future management area
  recommendations
• Groundwater is inherently 3D and as such that is
  difficult to visualise using classic map (2D)
  presentation methods

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3D Visualisation

• Solution
• ArScene for initial VRML 3D design
• VRML 3D environment for final 3D design
• HTML wrapper and simple JavaScript controls

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3D Visualisation

• Interface Structure (HTML Frames)

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3D Visualisation

• 3D Presentation Structure a layer cake

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3D Visualisation
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3D Visualisation
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3D Visualisation
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3D Visualisation
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3D Visualisation
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3D Visualisation
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Thank You!

• Visit us at Booth 37
• for a demo