Group Spacing=50,100, 50,100,... meters For this cruise the streamer had the following spacing: 2 50m actives followed by a 50m dead section, so 48 channels over 3500m.

(i.e. trace offset

48 300

47 350

46 450

45 500

44 600

43 650

42 750

. .

. .

. .

Antenna to Source (Kana Keoki)=74 meters

Source Volume (Kana Keoki)=1920 cu. in.

Source Pressure (Kana Keoki)=2000 psi

Source Depth (Kana Keoki)=UNKNOWN meters

Shot Control (Kana Keoki)=Time: Every minute on the half minute for Constant Offset Lines. For these lines the the Kana Keoki was in front of the Conrad. 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.

Ship Distances for COP lines:

Line COP Distance

301 A 3.6

303 cdp/esp/cop 3.6

304 B 16.0

305 cdp/esp/cop 3.6

306 C 16.0

307 cdp/esp/cop 3.6

308 D 16.0

310 cdp/esp/cop 3.6

311 E 18.0

313 E 3.6

314 F 3.6

316 cdp/esp/cop 3.6

317 G 16.0

319 cdp/esp/cop 3.6

320 H 16.0

322 cdp/esp/cop 3.6

323 I 16.0

325 cdp/esp/cop 3.6

326 J 3.6

327 cdp/esp/cop 3.6

328 K 3.6

CDP lines (Conrad only)

329

330

331

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