USGS Open-File Report 03-474, G1-03-GM, Gas Hydrates Cruise Report, R/V Gyre, 1-14 May 2003, Northern Gulf of Mexico
Title Page
Abstract
Introduction
Acknowledgments
Geologic Settings
Cruise Objectives
Cruise Strategy
Instrumentation
Data Processing
Data Handling
Marine Mammal Mitigation
Operational Summary
Success in Meeting Objectives
Summary
References
APPENDICES
1. MULTICHANNEL
LINE
STATISTICS
2. Summary of
Digital Data
3. Marine
Mammal
Documents
4. Science Roster
5. Ship Roster/
Specs
6. Photo gallery
Appendix 1 G1-03-GM Multichannel Line Statistics
This appendix gives statistics and other information for each multichannel line from the cruise.
Table 1-1: Names and Statistics for Multichannel Lines
| Line | (Julian) Day | FFID Start | FFID End | Start | End | Line Length(km) | Average Speed (kts) | Ship, Azimuth |
|---|---|---|---|---|---|---|---|---|
| Test 1 | 123 | 1 | 1334 | 12:54 | 14:00 | 13.33 | 6.54 | 270 |
| Test 2 | 123 | 1335 | 2876 | 14:35 | 16:45 | 15.41 | 3.84 | 90 |
| Test 3 | 123 | 14 | 171 | 18:12 | 3.14 | 270 | ||
| KC1 | 123 | 172 | 1403 | 18:13 | 21:45 | 24.62 | 3.76 | 270 |
| KC2 | 123/124 | 1491 | 2549 | 22:12 | 2:00 | 21.16 | 3.01 | 90 |
| KC3 | 124 | 2553 | 3199 | 3:10 | 4:59 | 12.92 | 3.84 | 270 |
| KC4 | 124 | 1 | 649 | 5:38 | 7:34 | 12.96 | 3.62 | 90 |
| KC5 | 124 | 650 | 1291 | 7:53 | 9:45 | 12.82 | 3.71 | 270 |
| KC6 | 124 | 1292 | 1939 | 10:09 | 12:01 | 12.94 | 3.74 | 90 |
| KC7 | 124 | 2049 | 2790 | 12:56 | 15:12 | 14.82 | 3.53 | 180 |
| KC8 | 124 | 73 | 820 | 15:29 | 17:33 | 14.94 | 3.90 | 0 |
| KC9 | 124 | 894 | 1647 | 17:52 | 20:08 | 15.06 | 3.59 | 180 |
| KC10 | 124 | 1724 | 2478 | 20:27 | 22:33 | 15.08 | 3.88 | 0 |
| KC11 | 124/125 | 35 | 791 | 22:52 | 1:07 | 15.12 | 3.63 | 180 |
| KC12 | 125 | 938 | 1694 | 1:31 | 3:33 | 15.12 | 4.02 | 0 |
| KC13 | 125 | 1863 | 2620 | 4:13 | 6:39 | 15.14 | 3.36 | 180 |
| KC14 | 125 | 101 | 853 | 6:53 | 9:02 | 15.04 | 3.78 | 0 |
| KC15 | 125 | 953 | 1711 | 9:25 | 11:31 | 15.16 | 3.90 | 180 |
| KC16 | 125 | 1802 | 2558 | 11:43 | 13:54 | 15.12 | 3.74 | 0 |
| KC17 | 125 | 150 | 908 | 14:24 | 16:49 | 15.16 | 3.39 | 180 |
| KC18 | 125 | 1024 | 1763 | 17:08 | 19:14 | 14.78 | 3.80 | 0 |
| KC19 | 125 | 1765 | 2097 | 20:44 | 21:47 | 6.64 | 3.42 | 180 |
| KC20 | 125 | 45 | 400 | 22:02 | 23:03 | 7.10 | 3.77 | 0 |
| KC21 | 125/126 | 459 | 772 | 23:24 | 0:25 | 6.26 | 3.33 | 180 |
| KC22 | 126 | 869 | 1214 | 0:41 | 1:44 | 6.90 | 3.55 | 0 |
| KC23 | 126 | 1352 | 1695 | 2:11 | 3:17 | 6.86 | 3.37 | 180 |
| KC24 | 126 | 1704 | 1958 | 3:54 | 4:37 | 5.08 | 3.83 | 0 |
| KC25 | 126 | 2013 | 2268 | 4:47 | 5:34 | 5.10 | 3.52 | 180 |
| KC26 | 126 | 2336 | 2592 | 5:46 | 6:35 | 5.12 | 3.39 | 0 |
| KC27 | 126 | 2645 | 2903 | 6:47 | 7:33 | 5.16 | 3.63 | 180 |
| KC28 | 126 | 2959 | 3212 | 7:42 | 8:27 | 5.06 | 3.64 | 0 |
| KC29 | 126 | 3541 | 3792 | 9:26 | 10:09 | 5.02 | 3.78 | 180 |
| KC30 | 126 | 3918 | 4166 | 10:29 | 11:10 | 4.96 | 3.92 | 0 |
| KC31 | 126 | 4321 | 4573 | 11:36 | 12:22 | 5.04 | 3.55 | 180 |
| KC32 | 126 | 71 | 319 | 12:39 | 13:22 | 4.96 | 3.74 | 0 |
| KC33 | 126 | 378 | 627 | 13:35 | 14:21 | 4.98 | 3.51 | 180 |
| KC34 | 126 | 871 | 1122 | 15:02 | 15:46 | 5.02 | 3.70 | 90 |
| KC35 | 126 | 1236 | 1484 | 16:07 | 16:49 | 4.96 | 3.83 | 270 |
| KC36 | 126 | 1671 | 1920 | 17:24 | 18:10 | 4.98 | 3.51 | 90 |
| KC37 | 126 | 2003 | 2228 | 18:26 | 19:10 | 4.50 | 3.31 | 270 |
| KC38 | 126 | 2410 | 2659 | 19:44 | 20:29 | 4.98 | 3.59 | 90 |
| KC39 | 126 | 2868 | 3022 | 21:04 | 21:45 | 3.08 | 2.43 | 270 |
| KC40 | 126 | 3116 | 3366 | 22:00 | 22:44 | 5.00 | 3.68 | 90 |
| KC41 | 126 | 3441 | 3683 | 23:02 | 23:45 | 4.84 | 3.65 | 270 |
| KC42 | 127 | 3841 | 4089 | 0:11 | 0:54 | 4.96 | 3.74 | 90 |
| KC43 | 127 | 4147 | 4398 | 1:05 | 1:44 | 5.02 | 4.17 | 270 |
| KC44 | 127 | 4461 | 4706 | 1:55 | 2:35 | 4.90 | 3.97 | 90 |
| KC45 | 127 | 4810 | 5058 | 2:52 | 3:35 | 4.96 | 3.74 | 270 |
| KC46 | 127 | 5160 | 5379 | 3:56 | 4:33 | 4.38 | 3.84 | 90 |
| KC47 | 127 | 5479 | 5724 | 5:10 | 5:52 | 4.90 | 3.78 | 270 |
| KC48 | 127 | 5726 | 6371 | 7:12 | 9:06 | 12.90 | 3.67 | 90 |
| KC49 | 127 | 6372 | 7008 | 9:24 | 11:07 | 12.72 | 4.00 | 270 |
| KC50 | 127 | 7009 | 7653 | 11:26 | 13:14 | 12.88 | 3.86 | 90 |
| KC51 | 127 | 7654 | 8301 | 13:35 | 15:20 | 12.94 | 3.99 | 270 |
| KC52 | 127 | 8302 | 8951 | 15:54 | 17:51 | 12.98 | 3.59 | 90 |
| KC53 | 127 | 1 | 644 | 18:39 | 20:35 | 12.86 | 3.59 | 270 |
| KC54 | 127 | 645 | 1633 | 21:09 | 23:52 | 19.76 | 3.93 | 90 |
| KC55 | 128 | 1634 | 2018 | 0:20 | 1:23 | 7.68 | 3.95 | 30 |
| KC56 | 128 | 2099 | 2611 | 2:07 | 3:30 | 10.24 | 4.00 | 302 |
| KC57 | 128 | 2612 | 3611 | 3:48 | 6:47 | 19.98 | 3.62 | 225 |
| KC58 | 128 | 1 | 649 | 7:25 | 9:22 | 12.96 | 3.59 | 90 |
| KC59 | 128 | 817 | 1607 | 13:23 | 16:54 | 23.70 | 3.64 | 270 |
| KC60 | 128/129 | 1 | 2829 | 17:46 | 5:59 | 84.84 | 3.75 | 5 |
| GB61 | 129 | 1 | 1572 | 7:35 | 14:44 | 47.13 | 3.56 | 87 |
| GB62 | 129 | 1647 | 1919 | 15:42 | 16:48 | 8.16 | 4.01 | 327 |
| GB63 | 129 | 1920 | 2157 | 17:42 | 18:59 | 7.11 | 2.99 | 196 |
| AV64 | 130/131 | 2559 | 3001 | 23:22 | 0:33 | 8.84 | 4.05 | 140 |
| AV65 | 131 | 3002 | 3273 | 1:04 | 1:49 | 5.42 | 3.90 | 320 |
| AV66 | 131 | 3274 | 3527 | 2:11 | 2:51 | 5.06 | 4.08 | 140 |
| AV67 | 131 | 3528 | 3772 | 3:18 | 3:54 | 4.88 | 4.39 | 180 |
| AV68 | 131 | 3773 | 4013 | 4:04 | 4:46 | 4.80 | 3.70 | 0 |
| AV69 | 131 | 4014 | 4260 | 5:04 | 5:46 | 4.92 | 3.80 | 180 |
| AV70 | 131 | 4261 | 4507 | 5:57 | 6:38 | 4.92 | 3.89 | 0 |
| AV71 | 131 | 4508 | 4755 | 6:59 | 7:37 | 4.94 | 4.21 | 180 |
| AV72 | 131 | 4756 | 5003 | 8:15 | 8:54 | 4.94 | 4.10 | 0 |
| AV73 | 131 | 5004 | 5254 | 9:21 | 10:03 | 5.00 | 3.86 | 180 |
| AV74 | 131 | 5255 | 5500 | 10:16 | 10:54 | 4.90 | 4.18 | 0 |
| AV75 | 131 | 5501 | 5747 | 11:18 | 11:58 | 4.92 | 3.99 | 180 |
| AV76 | 131 | 5748 | 6008 | 12:19 | 12:59 | 5.20 | 4.21 | 0 |
| AV77 | 131 | 6145 | 6394 | 13:22 | 14:06 | 4.98 | 3.67 | 180 |
| AV78 | 131 | 1 | 248 | 14:10 | 14:48 | 4.94 | 4.21 | 0 |
| AV79 | 131 | 249 | 492 | 15:03 | 15:47 | 4.86 | 3.58 | 180 |
| AV80 | 131 | 493 | 739 | 15:53 | 16:32 | 4.92 | 4.09 | 0 |
| AV81 | 131 | 740 | 985 | 16:42 | 17:24 | 4.90 | 3.78 | 180 |
| AV82 | 131 | 1281 | 1528 | 18:11 | 18:53 | 4.94 | 3.81 | 45 |
| AV83 | 131 | 1541 | 1789 | 19:43 | 20:25 | 4.96 | 3.83 | 225 |
| AV84 | 131 | 1790 | 2103 | 20:46 | 21:36 | 6.26 | 4.06 | 45 |
| AV85 | 131 | 2104 | 2352 | 22:04 | 22:43 | 4.96 | 4.12 | 270 |
| AV86 | 131 | 2394 | 2641 | 22:50 | 23:29 | 4.94 | 4.10 | 90 |
| AV87 | 131/132 | 2642 | 2888 | 23:53 | 0:33 | 4.92 | 3.99 | 270 |
| AV88 | 132 | 2889 | 3132 | 0:49 | 1:28 | 4.86 | 4.04 | 90 |
| AV89 | 132 | 3133 | 3380 | 1:41 | 2:20 | 4.94 | 4.10 | 270 |
| AV90 | 132 | 3381 | 3612 | 2:41 | 3:24 | 4.62 | 3.48 | 90 |
| AV91 | 132 | 3613 | 3857 | 3:34 | 4:13 | 4.88 | 4.05 | 270 |
| AV92 | 132 | 1 | 246 | 4:26 | 5:05 | 4.90 | 4.07 | 90 |
| AV93 | 132 | 247 | 495 | 5:25 | 6:03 | 4.96 | 4.23 | 270 |
| AV94 | 132 | 496 | 509 | 6:35 | 6:37 | 0.26 | 4.21 | 90 |
| AV94b | 132 | 510 | 1011 | 10:39 | 12:00 | 10.02 | 4.01 | 90 |
| AV95 | 132 | 1012 | 1261 | 12:29 | 13:08 | 4.98 | 4.14 | 270 |
| AV96 | 132 | 1262 | 1511 | 13:21 | 14:08 | 4.98 | 3.43 | 90 |
| AV97 | 132 | 1512 | 1958 | 14:24 | 15:33 | 8.92 | 4.19 | 270 |
| AV98 | 132 | 1595 | 2453 | 16:40 | 18:00 | 17.16 | 6.95 | 0 |
| AV99 | 132 | 2454 | 3670 | 18:35 | 22:03 | 24.32 | 3.79 | 315 |
| MC100 | 132/133 | 120 | 1306 | 22:32 | 1:44 | 23.72 | 4.00 | 246 |
| MC101 | 133 | 1563 | 1834 | 2:25 | 3:08 | 5.42 | 4.08 | 338 |
| Total: | 1032.66 km | |||||||
Table 1-2: Seismic Sources
| Line1 | Seismic Source |
|---|---|
| Test1 | 15 in3 Water Gun |
| Test2 | 15 in3 Water Gun |
| Test3 | 13/13 in3 GI Gun (line turn) |
| KC1-KC58 | 13/13 in3 GI Gun |
| KC59-GB63 | 24/24 in3 GI Gun |
| AV64-MC101 | 13/13 in3 GI Gun |
1Test1 was a short line with vessel speed greater than 4 kts. Test2 is the entire line at 4 kts. Test3 was on the turn to reverse and reoccupy the line. Test4 became KC1 with the decision to use the 13/13 in3 GI Gun for the main seismic source of the cruise.