Abitibi-Grenville Transect, Phase II (1993)

Uncorrelated, stacked data (except where problems with the stacker were encountered) were written to IBM 3480 BPI
cartridges. The format is 2.5 byte demultiplexed SEGD. 

AG (1993) High resolution seismic lines 43, 44, 93A, 93D

Survey Company: Enertec Geophysical
Acquisition Company: CGG Data Processing
Direction: 43, 44 (N to S)
           93A (S to N)
           93D (3D)

Source Type: Vibroseis
SP/VP Interval:20 m
Sweep: 30-135 Hz
Sweep Length: 12 s
Record Length/Sample Rate: 4 s, 2 ms (1 ms for 93A+D)

Source Pattern: 3 Vibrators over 18 m (93D: 250 g dynamite)
Sweeps: 4 (pilot in trace 2 and 4)

Instrumentation: MDS-18X
Geophone Type: Mark l25D
Frequency: 30 Hz
Group Interval: 8 m
Number of Geophones in a group: 9
Geophone Spacing: 1 m

Geophone Pattern: 9 over 8 m
                  (93D: 9 in a 1m circle)

Spread Configuration (except 93D):
        Traces:    240----121 * 120-----1
        Distances:2400-----20   20-----2400
           (m)