COCORP Montana MONTANA

Start Date 1 End Date 8/23/85 Date of Startup 8/30/85
Contractor GEOSOURCE Crew Number 6834
COCORP Honcho MDS-10 48
Startup Supervisor 38.4 CHRIS Surface Coverage POTTERkm


PARAMETERS

Recording System 96 No. of Channels 100.1 Geophone Group Spacing 100.1m Source Spacing 32m Source/Nearest Receiver Offset PUSHstations
Push/Pull OFFEND Offend of Split YES Noise Reject 50% Vibrator Power MD-100 Stacking Fold 8
Sampling Interval 31.25 Antialias Filter 10hz Sweep Freq. Start 4hz Sweep Freq. End 32hz Sweep Duration 48seconds
Total Record Time 16seconds Correlated Record Length UPseconds Upsweep or Downsweep 8 Number of Sweeps per VP 8 Notch Filter 60hz


Geophone Array

Geophone Type 24 Natural Frequency of Geophone 4.3hz Number of Geophones per Station llllllllllllllllllllllll
Spacing Between Geophone Elements 98.1m Weighting Scheme 5 Total Geophone Array Length FAILING


Source Array

Vibrator Type 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