lecture 19, marine seismic surveying
TRANSCRIPT
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Seismic Data ProcessingZGE 373
Marine Seismic Acquisition
Prepared by: Dr. Amin Khalil
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Marine Seismic Sources: Airgun cont’d
Response from an airgun
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Air gun array
One air gun Array of air guns
single
Arra
y
desired
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Tuning An Air Gun Array
•Summing the signal of multiple guns creates a more desirable signal•Note the relative scales of the left and right plots
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Example of array
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Source signature change with Depths
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Definition
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Ghosts
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Effect of water layer
M u l t i p l e s
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Main Components
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How are things actually looks like
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Hydrophone
Principle of piezoelectric effect
Voltage proportional to the variation of the pressure
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Example
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Illastration
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End
Thank you