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USGS Open-File Report 03-474, G1-03-GM, Gas Hydrates Cruise Report, R/V Gyre, 1-14 May 2003, Northern Gulf of Mexico

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.


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