sfpwd implements plane-wave destruction, a filter that attenuates locally plane-wave events, as described in the paper Applications of plane-wave destruction filters.
The following example from jsg/diffr/gom shows a seismic section before and after an application of sfpwd:
sfpwd takes two input files: a 2-D or 3-D seismic data, and the local slope estimated by sfdip and specified by dip= parameter. When applied to 3-D data, sfpwd can produce either one output (inline or crossline destruction) or two outputs (both inline and crossline desctructions). This is controlled by the which= parameter. Other parameters (nj1=, nj2=, order=) have the same meaning as the corresponding parameters in sfdip.
codemore code
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