Phase II

Acquisition parameters

     Contractor: Enertec Geophysical Services Ltd. 
     Recorded: 1993 
     Source: 4 Vibs, 14 s 10-56 Hz sweep, 7 sweeps/VP 
     Receivers: 14 Hz, 9 per group 
     Instrumentation: 400 channel MDS-18X 
     Recording: 32 s uncorrelated at 4 ms sample rate, SEGD on IBM 3480 cartridges 
     Spread: 50 m station spacing, 100 m source spacing, 200-200 split, 100 fold

Processing

     Contractor: Seismic Data Processors Ltd. 
     Geometry: crooked line, 25 by 2000 m bins 
     Notch filter: 60 Hz 
     Spiking deconvolution: 80 ms operator length 
     Bandpass filter: 0-3 s: 16-20-55-59 Hz; 3-18 s: 12-15-45-50 Hz 
     AGC: 500 ms 
     Field statics: to 400 m, replacement velocity 6000 m/s 
     NMO correction 
     First break mute 
     Trim statics: 3-10 s window, +/- 20 ms 
     Stack 
     Time-variant bandpass filter 
     Time-variant AGC scaling 
     FK migration: 6000 m/s