COCORP WASHINGTON 8

Start Date 7/29/85 End Date 8/6/85 Date of Startup ?/?/?
Contractor GEOSOURCE Crew Number 6834
COCORP Honcho CHRIS POTTER
Startup Supervisor No One Surface Coverage 33.4km


PARAMETERS

Recording System MDS-10 No. of Channels 96 Geophone Group Spacing 100.1m Source Spacing 100.1m Source/Nearest Receiver Offset 4stations
Push/Pull PUSH Offend of Split OFFEND Noise Reject YES Vibrator Power 30&50% Stacking Fold 48
Sampling Interval 8 Antialias Filter 31.25hz Sweep Freq. Start 10hz Sweep Freq. End 32hz Sweep Duration 32seconds
Total Record Time 48seconds Correlated Record Length 16seconds Upsweep or Downsweep UP Number of Sweeps per VP 8 Notch Filter 60hz


Geophone Array

Geophone Type MD-100 Natural Frequency of Geophone 8hz Number of Geophones per Station 24
Spacing Between Geophone Elements 4.3m Weighting Scheme llllllllllllllllllllllll Total Geophone Array Length 98.1


Source Array

Vibrator Type 5_FAILING_Y1100'S
Primary Array
No. of Vibrators5 Spacing Between Vibrators 25.2 m Source Moveup Between Sweeps 12.6 m
1st Vibrator starts (relative to the flag) 6.3 m Array Source Array Length 189 m
Backup Array
No. of Vibrators 4 Spacing Between Vibrators 33.6 m Source Moveup Between Sweeps 12.6 m
1st Vibrator starts (relative to the flag) 6.3 m Array Source Array Length 189 m