Hyperspectral mapping of Archaean Epithermal alteration

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Hyperspectral mapping of Archaean Epithermal
alteration at the North Pole Dome,
Pilbara Craton, Western Australia
AND APPLICATIONS FOR MARS
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Pilbara
Mars
IR Spectrometry
Airborne Remote Sensing
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NPD Introduction
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(No Transcript)
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(No Transcript)
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Detection Algorithm
ORIGINAL SPECTRA
SMOOTHING/INTERPOLATION
GAUSSIAN FITTING
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MAPPING TEMPERATURE ZONES AT A VOLCANIC VENT
200m
Short wavelength
Long wavelength
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Results Dresser Formation
N
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N
3km
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N
3km
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N
Mineral Mapping
Chlorite
W.mica
Serpentine
Kaolinite
3km
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THEMIS Instrument

• In operation on Mars Odyssey since 2001
• Coverage in VIS and IR
• 3.6km wide swathes, variable length
• Bands
• 5 bands VIS 0.3-0.6 microns 19m resolution
• 10 bands IR 6.5-14.5 microns 100m resolution
• Problems
• Cross-band correlation
• Band 5 VIS U/S
• Band 12 IR duplicated
• Band 10 IR CO2 masked
• Coverage not always multispectral

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Gusev Crater
50km
MARS LANDING SITES
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Spirit Landing Site Gusev Crater
100km
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Spirit Landing Site Gusev Crater
30km
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CRISM Instrument

• Compact Reconnaissance Infrared Spectrometer for
  Mars (CRISM)
• 2 modes - low and high res
• Hypspectral mode 16m spatial resolution, 0.3-5
  micron spectral coverage
• Launch date 2005 First data returned 2006

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questions?

• Go to
• http//aca.mq.edu.au/abrown.htm