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Sharp Deconvolution in p-tau domain.

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B. Testing the SDec: multiple attenuation for 1.5 D seismic data. Model 1

Fig.1. SDec in  p - tau domain. Model 1.

From the left to the right:

1. input blind data in p-tau

(CSG for 
model 1.: we got the model a posteriori);

given: the shortest offset = 100 m, offset increment = 25m, source depth = 6 m,

geophones' depths = 6 m; no information on source signature);

2. theoretical output (synthetic CSG: no induced by free surface multiples *)

3. SDec - output.

Model 1 in format ps.gz

Fig 1a. SDec in p-tau. Input and SDec-outputs for the  model 1.
Here  two pairs of  files are displayed **:
the 1st pair -
Input
( 1.: CSG in x-t domain;
  2.: CSG in p-tau; the same data as represented with Fig.1,1.
    vertical axis is of time units -sec,
    horizontal axis - offset or horizontal slowness - of conventional units) and the 2nd pair -
SDec-output for the model 1.
NB! Here are two output files (compare with the Fig.1)
  3.the 1st SDec output:the same as Fig.1,3. - CSG in p-tau, all induced by free surface multiples are removed;
  4. the 2nd SDec output performing an action of a spike deconvolution: "reflection coefficients in p-tau (rc/pt)", i.e. amplitudes of primaries versus horizontal slowness.

* In other words, Fig. 1.2. represents the very best result of elimination of multiples which can be achieved with a linear operator.
** Files are displayed here with SeismicUnix package: thanks to The Center for Wave Phenomena, to John Stockwell in particular.

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