To the previous MSvE-page Multiple Suppression via Envelopes

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MSvE in p-tau domain. Real data.

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Real data,  p-tau domain, the nearest to p = 0 trace. An excellent example of incoherent multiples produced by a thin-layer slab of sediments superposed on a strong reflector - basalt with lateral variation of the sea floor.

• The first arrival and  the expected - in accordance with the strategy of predictive deconvolution -  moments of multiple arrivals  are marked with impulses beneath. There is no visible self-repetition of waveforms,  even rather short segments of the trace have a very low correlation coefficient. It is not hard to predict that none of strategies - which exploit the correlation of waveforms- can yield a satisfactory result.

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Example of MSvE-run.
Besides a sea-surface two principle horizons generate  multiples: a thin-layer slab of sediments
forming a sea-floor and basalt beneath.

• A. Input trace;
• B. EET output: Envelope;
• C. Mask-filter I, responsible for removal of all of a free-surface related multiples;
• D. Relative output I;
• E. Mask-filter II, responsible for removal of intrabed reverberations sea-floor - basalt;
• F. Final output of MSvE

The fragment does not contain detectable primaries beneath basalt.
Another fragment from the same profile does.

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Multiple Suppression via Envelopes.Real data.

• Left column:  input CMP-gathers;
• Right column: output of MSvE.

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