COCORP Michigan MICHIGAN

Start Date 1 End Date 8/2/78 Date of Startup 9/8/76
Contractor 8/1/78 Crew Number GEOSOURCE
COCORP Honcho 86.4 BROWN
Startup Supervisor 6834 KAUFMAN Surface Coverage Mkm


PARAMETERS

Recording System MDS-10 No. of Channels 96 Geophone Group Spacing 67.1m Source Spacing 134.1m Source/Nearest Receiver Offset 4stations
Push/Pull PUSH Offend of Split OFFEND Noise Reject YES Vibrator Power 16 Stacking Fold 24
Sampling Interval 8 Antialias Filter 31.25hz Sweep Freq. Start 8hz Sweep Freq. End 32hz Sweep Duration 30seconds
Total Record Time 50seconds Correlated Record Length 20seconds Upsweep or Downsweep UP Number of Sweeps per VP ETL-EV Notch Filter WABCOhz


Geophone Array

Geophone Type 22B Natural Frequency of Geophone 7.5hz Number of Geophones per Station 24
Spacing Between Geophone Elements 8.5m Weighting Scheme ll22333322ll Total Geophone Array Length 93.9


Source Array

Vibrator Type "4
Primary Array
No. of VibratorsY1100, Spacing Between Vibrators 1 m Source Moveup Between Sweeps WABCO m
1st Vibrator starts (relative to the flag) Y900" m Array Source Array Length 5 m
Backup Array
No. of Vibrators 22.9 Spacing Between Vibrators 7.6 m Source Moveup Between Sweeps -11.2 m
1st Vibrator starts (relative to the flag) 205.6 m Array Source Array Length 4 m