# NH1106 Midwater Trawl # Guaymas Basin, Gulf of California # PI: Kelly Benoit-Bird (OSU) # Version: 08 Aug 2013 ========================= cruise_id instrument ------------------------- NH1106 IKMT ========================= tow location lat_start lon_start target_depths target_depth_min target_depth_max day_or_night depth_btm_min depth_btm_max date_start time_start time_end time_start_target_depth time_end_target_depth sog_min sog_max wire_out_max portion_cod_end_filled pcnt_catch_preserved no_jars_preserved notes ------------------------- 1 Nolasco 27.8504 -111.3798 170 170 170 Day 590 590 06/09/2011 23:58 01:00 00:22 00:42 3.7 4.0 537 1/4 50.0 1 nd 2 Nolasco 27.8311 -111.4058 34 34 34 Night 640 640 06/10/2011 05:00 05:34 05:09 05:29 3.9 3.9 129 1/4 50.0 1 nd 3 Basin 27.6560 -111.5832 380 380 380 Day gt_1000 gt_1000 06/10/2011 20:34 22:12 21:08 21:28 3.0 4.3 1250 1/2 50.0 2 After reaching target depth net continued dropping (to 405m) and ship dropped speed to 3.4 kts. At 21:14 wire to 1220; speed back to 4 kts. No change in net depth; wire brought to 1130m at 21:19; depth returned to 372m at 21:22. Depth continued rising to 348. 4 Basin 27.4212 -111.6881 31 31 31 Night gt_1000 gt_1000 06/11/2011 04:49 05:20 04:55 05:15 3.9 3.9 120 1/4 100.0 1 nd 5 Basin 27.4534 -111.6826 29 29 29 Night gt_1000 gt_1000 06/11/2011 07:32 08:06 07:38 07:58 4.2 4.2 120 1/4 100.0 2 nd 6 Marcos-Rosalia 27.3050 -112.0978 300 300 300 Day 687 820 06/12/2011 00:21 01:38 00:47 01:07 3.9 4.0 940 1/4 50.0 1 nd 7 Marcos-Rosalia 27.3089 -112.1803 70 70 70 Night 217 630 06/12/2011 04:47 04:27 04:57 05:17 4.1 4.1 240 1/4 50.0 1 nd 8 San_Carlos 27.8648 -112.6607 73 73 73 Night 236 315 06/14/2011 05:09 05:48 05:19 05:39 3.7 4.4 232 1/8 100.0 1 diffuse target; multi level. Scattering layer moved above net at 5:29 probably due to our course towards shore 9 San_Raphael 28.6382 -113.0509 60;10 10 60 Night 246 246 06/15/2011 04:42 05:18 04:50 05:16 3.7 4.0 200 1/8 100.0 1 10 min tow through thick scattering layer at 60m (below squid detections) then 10 min through higher layer (10m) where squid are present. Results for this tow include lots of krill (perhaps as much as in the jar) that is stuck in the net and can't be washed down into the sample. Sample in jar excludes 1 gonatus squid given to seibel group 10 San_Raphael 28.6248 -113.0151 220;210 210 220 Day 475 578 06/15/2011 20:34 21:49 21:02 21:22 4.3 4.5 839 1/4 100.0 2 1 squid (abraliopsis sp) given to seibel group 11 Basin 27.6247 -111.7617 20;14 14 20 Night gt_1000 gt_1000 06/17/2011 05:59 06:25 06:02 06:23 3.6 4.2 75 lt_1/8 100.0 1 only tiny invertebrates found 12 Basin 27.6238 -111.7645 276;290;310 276 310 Day 960 960 06/17/2011 19:14 20:42 19:42 20:08 3.5 4.8 1020 1/4 50.0 1 lost contact with depth sensor at 19:54 for 1 minute 13 Basin 27.4430 -111.5357 30;22 22 30 Night 800 800 06/18/2011 05:16 05:45 05:21 05:42 4.0 4.0 100 1/8 100.0 1 *14 small squid (pterigio sp) taken by RUI. Towed below squid level for 10 minutes then with squid. Also we towed with the swell and did not stay on transect 14 Marcos-Rosalia 27.3545 -112.1346 240_to_270;214 214 270 Day 670 870 06/18/2011 22:21 23:33 22:45 23:12 3.8 4.0 822 1/4 50.0 1 of 3 distinct layers we towed the top most distinctive one (which usually turns out to be the squid filled one). The layer migrated up as the bottom depth changed. 15 Marcos-Rosalia 27.2981 -112.1817 42;26;18 18 42 Night 118 640 06/19/2011 04:32 05:06 04:40 05:04 3.8 4.0 152 1/4 50.0 2 nd 16 Basin 27.3997 -111.6817 320;300 300 320 Day gt_1000 gt_1000 06/19/2011 19:56 21:08 20:21 20:45 3.7 3.7 985 1/8 50.0 1 towing off transect (SE) to head into wind 17 Basin 27.5273 -111.5719 42 42 42 Night gt_1000 gt_1000 06/20/2011 05:24 05:58 05:31 05:54 3.9 3.9 140 1/8 50.0 1 towed with the wind slightly off transect. Included 1 flying fish in sample (18.5 cm fork length; 22 cm total length) 18 Basin 27.7222 -111.7170 320 320 320 Day gt_1000 gt_1000 06/20/2011 19:55 21:11 20:22 20:44 3.7 3.7 1060 1/8 50.0 1 1 hatchet fish in sample; some of the 'harder to catch' myctophids 19 Basin 27.5228 -111.5366 35 35 35 Night gt_1000 gt_1000 06/21/2011 04:13 04:44 04:18 04:38 3.9 3.9 120 1/4 50.0 1 nd 20 Nolasco 27.8300 -111.4063 353;245 245 353 Day 653 653 06/21/2011 19:40 21:03 20:11 20:42 3.0 3.7 1100 1/8 50.0 1 2nd half of tow may be slightly above scatterin layer. 20:37- ship speed reduced to 3 kts to try to compensate for above 21 Nolasco 27.8328 -111.3944 12;20 12 20 Night 635 635 06/22/2011 03:55 04:24 04:00 04:21 3.9 4.2 90 1/8 100.0 1 nd