Receiver Type: Hydrophone_Streamer
Source Type: SeismicSource_Gun_Air
Acquisition System Name: DFS IV
Acquisition System Type: digital
Seismic Nav System: US Navy Transit Satellite
Survey Datum: WGS72
Source to Near Channel (m): 300
Antenna to Source (m): 40: <i>Conrad</i>; 74: <i>Kana Keoki</i>
Number of Channels Recorded: 48
Channel Length (m): 50;100; 50;100;
: For this cruise the streamer had the following spacing: 2 50m actives followed by a 50m dead section; so 48 channels over 3500m.
Cable Receiver Depth (m): 13.7-15.2
Source Volume (cubicInches): 1864: <i>Conrad</i>; 1920: <i>Kana Keoki</i>
Source Pressure (bars): 138
Source Number: 4 (<i>Conrad</i>)<br>3 (<i>Kana Keoki</i>)
Source Depth (m): unknown (<i>Conrad</i>)<br>unknown (<i>Kana Keoki</i>)
Shot Control: time
Shot Interval (s or m): 20: <i>Conrad</i>: Time: Every minute on the half minute for Constant Offset Lines. At 20 second intervals for the single ship cdp lines 329-332.<br><i>Kana Keoki</i>: Time: Every minute on the half minute for Constant Offset Lines. For these lines the the <i>Kana Keoki</i> was in front of the <i>Conrad</i>. The distance between the two ships was measured by Miniranger and Raydist. Each COP line was shot twice using two ship separations: 3.6 and 16 km. Airgun and Explosive ESPs (Expanding Spread Profiles) were also shot during this cruise.
Compass Birds: no
Tail Buoy Positioning: no
Recording Delay: no