The P-wave enhancement was used to produce 3 North bank and 3 South bank enhanced data sets. The following listing from the bref run documents the choice of parameters. The key parameter was to choose reciprocal shooting (changes the header search from shots to receivers as can be seen in the listing).
Program bref Line Number: 0001 System matrix output File: G0001 Data vector output File: D0001 receiver x,y= 1049. 1104. receiver x,y= 1009. 1021. receiver x,y= 1051. 1108. receiver x,y= 1007. 1017. receiver x,y= 1054. 1113. receiver x,y= 1005. 1013. Number of traces= 19 Parameters: Number of shots= 6 Minimum offset = 10.0 Maximum offset = 200.0 Refraction analysis Average Receiver Spacing= 5.0079 Ground Consistent Zone= 3.7559 Input File Names: N000.seg S000.seg N001.seg S001.seg N002.seg S002.seg
The problem required 3 constraint equations. These were to set the 3 common geophone points and the neighboring shot points to have the same delaytime.
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pm 2018-04-08