Cable Depth: 45-50 feet

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.

Examples - trace, offset(m):

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

Shot Control (Kana Keoki)=Time: Every minute on the half minute for Constant Offset COP lines. For these lines 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 different ship separations: 3.6km and 16km. Airgun and Explosive ESPs (Expanding Spread Profiles) were also shot during this cruise.

Ship Distances for COP lines:

Line, COP, Distance (km)

301 copA 3.6

303 cdp/esp/cop 3.6

304 copB 16.0

305 cdp/esp/cop 3.6

306 copC 16.0

307 cdp/esp/cop 3.6

308 copD 16.0

310 cdp/esp/cop 3.6

311 copE 18.0

313 copE 3.6

314 copF 3.6

316 cdp/esp/cop 3.6

317 copG 16.0

319 cdp/esp/cop 3.6

320 copH 16.0

322 cdp/esp/cop 3.6

323 copI 16.0

325 cdp/esp/cop 3.6

326 copJ 3.6

327 cdp/esp/cop 3.6

328 copK 3.6

CDP lines (Conrad only)

329

330

331

Source Type: mainly AirGun, Explosives used for ESPs

Source to Near Channel (m): 300

Antenna to Source (m): 40m for Conrad; 74m for Kana Keoki

Number of Channels Recorded: 48

Channel Length: For this cruise the streamer had the following spacing: 2 50m actives followed by a 50m dead section; so 48 channels over 3500m.

Cable Depth: 13.7-15.2m

Source Volume (cubic inches): 1864 for Conrad; 1920 for Kana Keoki

Source Pressure (bars): 138

Source Number: 4 for Conrad, 3 for Kana Keoki

Source Depth (m): unknown for both Conrad and Kana Keoki

Shot Control: Time

Shot Interval: For Conrad, every minute on the half minute for Constant Offset COP lines. At 20 second intervals for the single ship CDP lines 329-332. For Kana Keoki, every minute on the half minute for Constant Offset COP lines. For these lines 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.