Seismic interpretation, PSDM, seismic inversion, NMO, AVO, acquisition design, the wavelet, synthetics, polarity and all other topics about Geophysics and Seismic Interpretation.
Fri Oct 01, 2010 12:16 am
Hi all,
I am having trouble with understanding my seismic polarity. Several of my vintages that I use seem to be phaseshifted 180 degrees. I know several (two) types of colouring (negative and positive) conventions are used. The Shell convention and the SEG or something. Are they processed differently or is a simple phase shift in order??
And how does the input wiggle relate to this polarity (zero phased??). I have had this in university, but can;t seem to remember the details. Any documents/explanation on this would be very much appreciated.
Thanks,
Carl
Fri Oct 15, 2010 11:40 pm
I believe this is what you're looking for. The Shell and SEG polarity conventions can indeed be quite confusing. Let me know if this helped!
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