L14_SeismicReflectionI-page5

L14_SeismicReflectionI-page5 - Applied Geophysics Seismic...

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Applied Geophysics – Seismic reflection I Demultiplexing Preprocessing …bookkeeping! A 1 B 1 C 1 D 1 A 2 B 2 C 2 D 2 A 3 B 3 C 3 D 3 A 4 B 4 C 4 D 4 …. Four geophones: A, B, C, D, recording samples 1, 2, 3, 4 … • The recoding device stores samples in the order recorded • Demultiplexing is separating all the samples to produce a time sequence for each geophone A 1 A 2 A 3 A 4 …. B 1 B 2 B 3 B 4 …. C 1 C 2 C 3 C 4 …. D 1 D 2 D 3 D 4 …. Industry standards (SEG) usually allows for painless translation of the data
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Unformatted text preview: Applied Geophysics Seismic reflection I Editing and muting Preprocessing Manually cleaning up the data Remove dead traces Remove noisy traces Switch polarity on reversed traces Cut out unwanted signal e.g. pre-arrival noise, direct arrival, ground roll direct arrival reflection hyperbolae surface waves ground roll i.e. noise...
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This note was uploaded on 01/07/2012 for the course PHYSICS 384 taught by Professor Wei during the Spring '09 term at SUNY Stony Brook.

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