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Visualizing 3D Geophysical Data - Aucklandjohn-rugis/pdf/CITR_271011.pdf · • Overall Theme: 3D...
Transcript of Visualizing 3D Geophysical Data - Aucklandjohn-rugis/pdf/CITR_271011.pdf · • Overall Theme: 3D...
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Visualizing 3D Geophysical Data
Scientific Data Visualization John Rugis
CITR, Department of Computer Science,
University of Auckland, October 2011
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• Overall Theme: 3D graphics visualization used to leverage
the power of the human visual pattern recognition system
• Geophysical field data collection and processing
• Visualization results
• Discussion and future direction
Outline
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IESE Borehole and Surface Seismic Networks
• Standard data analysis and interpretation
– Earthquake locations
– Simple velocity models
– Special data analysis and interpretation.
– Seismic velocity and velocity–ratio tomography
– Fracture density and orientation
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IESE Magnetotelluric Surveys
• Standard data analysis and interpretation
– Resistivity and polarization profiles
– Reservoir characterization
– Geothermal site surveys
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• Goal of scientific visualization: Informed data exploration
• IESE Visualization Centre
• “Interactive Graphics”
– Viewing parameters under user control
– Performance: Real-time response
– Stereoscopic viewing options
– New technology developments…
IESE Scientific Data Visualisation
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• Micro-seismic event locations
• Fracture and porosity distributions
• Seismic wave speed distributions
• Fracture density distribution
• Magnetotelluric resistivity distribution
IESE Scientific Data Visualisation
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Points: Orthographic plan projection (seismic event location)
Micro-seismic event locations Spatial clustering & magnitudes
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Points: 3D perspective projection (seismic event location)
Micro-seismic event locations Spatial clustering & magnitudes
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Glyphs: 3D perspective projection (seismic event location)
Micro-seismic event locations Spatial clustering & magnitudes
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Coded glyphs: 3D perspective projection (seismic event location)
Micro-seismic event locations Spatial clustering & magnitudes
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Color-coded solid cube (synthetic porosity with depth & fracture)
Fracture and porosity distributions Volumetric data cubes and scalar data
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Extracted fracture slab (synthetic porosity)
Fracture and porosity distributions Volumetric data cubes and scalar data
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Extracted high porosity cells (synthetic porosity)
Fracture and porosity distributions Volumetric data cubes and scalar data
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Extracted low porosity slab (synthetic porosity)
Fracture and porosity distributions Volumetric data cubes and scalar data
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Extracted low porosity slab: 3D perspective projection
Fracture and porosity distributions Volumetric data cubes and scalar data
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Extracted low porosity slab: surface mesh
Fracture and porosity distributions Volumetric data cubes and scalar data
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3D solid data cube (pressure-wave velocity)
Seismic wave speed distributions Method 1: Solid volumetric data cubes
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3D data cube, threshold value cut-away (pressure-wave velocity)
Seismic wave speed distributions Method 1: Solid volumetric data cubes
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3D data cube, smoothed surface (pressure-wave velocity)
Seismic wave speed distributions Method 1: Solid volumetric data cubes
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3D data cube, wireframe cut-away (pressure-wave velocity)
Seismic wave speed distributions Method 1: Solid volumetric data cubes
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3D data cube, threshold value cut-away (pressure-wave velocity)
Seismic wave speed distributions Method 1: Solid volumetric data cubes
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3D solid data cube with transparency
(pressure-wave velocity)
Seismic wave speed distributions Method 2: Volumetric data cubes with transparency
Visualization transfer function
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Seismic wave speed distributions Method 2: Volumetric data cubes with transparency
3D solid data cube with transparency,
(depth normalized pressure-wave velocity)
Visualization transfer function
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Seismic wave speed distributions Method 2: Volumetric data cubes with transparency
3D solid data cube with transparency,
(depth normalized shear-wave velocity)
Visualization transfer function
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Seismic wave speed distributions Method 2: Volumetric data cubes with transparency
Depth normalized pressure-wave velocity
Depth normalized shear-wave velocity
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3D data cube (crack density)
Fracture density distribution Thin shell volumetric “iso-surfaces”
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3D data cube (synthetic conductivity with fracture)
Magnetotelluric resistivity distribution Complex volumetric structures with transparency
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3D data cube (synthetic conductivity with thermal outcrop)
Magnetotelluric resistivity distribution Complex volumetric structures with transparency
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Discussion & Questions?