Reflection Survey Todd Hansen Diana Hooper Michelle Heimgartner.
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Transcript of Reflection Survey Todd Hansen Diana Hooper Michelle Heimgartner.
![Page 1: Reflection Survey Todd Hansen Diana Hooper Michelle Heimgartner.](https://reader031.fdocuments.net/reader031/viewer/2022032310/56649d615503460f94a4289e/html5/thumbnails/1.jpg)
Reflection Survey
Todd Hansen
Diana Hooper
Michelle Heimgartner
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Seismic reflection
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Methods
• Bison Galileo 21• 2-24 channel cables spaced 2 m apart• Seismic source: 10-lb sledgehammer,
10 hits every 4 meters• Six 100 Hz geophones per group• Geophone groups overlapped to
diminish noise• Records were 0.5 s
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Sources of potential error
• Noise:– Wind - rattles geophones (windy on both
days)– Soft sediment - attenuation of seismic
waves
• Bad geophone plants
• Not error - loss of precision by overlapping the geophone groups
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Processing Methods
• Viewmat500
• Bandpass filter of 75-150 Hz with a 20% taper
• Trace-edit to erase noisy traces (multiply the amplitude of the trace by zero)
• Common Velocity Stack
• Common Midpoint Stack
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Hazen reflection profile
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Hazen cvstack profile
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Hazen cmpstack profile
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Fernley reflection profile
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Fernley cvstack profile
![Page 11: Reflection Survey Todd Hansen Diana Hooper Michelle Heimgartner.](https://reader031.fdocuments.net/reader031/viewer/2022032310/56649d615503460f94a4289e/html5/thumbnails/11.jpg)
Fernley cvstack profile
![Page 12: Reflection Survey Todd Hansen Diana Hooper Michelle Heimgartner.](https://reader031.fdocuments.net/reader031/viewer/2022032310/56649d615503460f94a4289e/html5/thumbnails/12.jpg)
Fernley cmpstack profile
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Thrust fault interpretation
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Drape Fold Interpretation
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Conclusions
• Fault???