04/17/2012,00:04:21,Jamie Austin,Little Herc stopped at 240 m. 04/17/2012,00:04:42,Jamie Austin,About 68% capacity at 240 m. 04/17/2012,00:05:19,Jamie Austin,Headed for the surface. 04/17/2012,00:11:13,tomweber,cylinder full, gas starting to escape 04/17/2012,00:12:19,Jamie Austin,Gas starting to escape from the base of the cylinder as we rise through ~120 m. 04/17/2012,00:12:38,tomweber,condensation forming? 04/17/2012,00:12:46,Jamie Austin,Gas continuing to escape as we rise. 04/17/2012,00:15:28,Jamie Austin,Vehicles stable at 50 m. Preparing for recovery. 04/17/2012,00:17:51,Erin Becker,shark 04/17/2012,01:07:07,okeanosexplorer,This is a live update from the NOAA Ship Okeanos Explorer. This is Rick Nadeau speaking. The local EX time is 2008 hours. Currently, the ROV is on deck and we are conducting multibeam mapping opperations at Pascagoula Dome.  The ROV is scheduled to dive at 0800. The water depth at our position is approximately 1400m. Our present heading is 80° at a position of 28° 59'N, 088° 00'W. 04/17/2012,02:49:15,okeanosexplorer, This is a live update from the NOAA Ship Okeanos Explorer. This is Rick Nadeau speaking. The local EX time is 2148 hours. Currently, the ROV is on deck and we are conducting multibeam mapping opperations at Pascagoula Dome.  The ROV is scheduled to dive at 0800. The water depth at our position is approximately 1400m. Our present heading is 260° at a position of 28° 59'N, 088° 00'W. 04/17/2012,04:07:59,okeanosexplorer, This is a live update from the NOAA Ship Okeanos Explorer. This is Rick Nadeau speaking. The local EX time is 2305 hours. Currently, the ROV is on deck and we are conducting multibeam mapping opperations at Pascagoula Dome.  The ROV is scheduled to dive at 0800. The water depth at our position is approximately 900m. Our present heading is 240° at a position of 28° 4'N, 088° 10'W. 04/17/2012,06:41:13,okeanosexplorer, This is a live update from the NOAA Ship Okeanos Explorer. This is Rick Nadeau speaking. The local EX time is 0140 hours. Currently, the ROV is on deck and we are conducting multibeam mapping opperations in the Gulf of Mexico.  The ROV is scheduled to dive at 0800. The water depth at our position is approximately 800m. Our present heading is 226° at a position of 28° 53'N, 088° 33'W. 04/17/2012,07:49:14,okeanosexplorer, This is a live update from the NOAA Ship Okeanos Explorer. This is Rick Nadeau speaking. The local EX time is 0750 hours. Currently, the ROV is on deck and we are conducting multibeam mapping opperations in the Gulf of Mexico.  The ROV is scheduled to dive at 0800. The water depth at our position is approximately 800m. Our present heading is 43° at a position of 28° 50'N, 088° 38'W. 04/17/2012,08:55:11,okeanosexplorer,This is a live update from the NOAA Ship Okeanos Explorer. This is Rick Nadeau speaking. The local EX time is 0855 hours. Currently, the ROV is on deck and we are conducting multibeam mapping opperations in the Gulf of Mexico.  The ROV is scheduled to dive at 0800. The water depth at our position is approximately 800m. Our present heading is 61° at a position of 28° 56'N, 088° 28'W. 04/17/2012,10:06:46,okeanosexplorer, This is a live update from the NOAA Ship Okeanos Explorer. This is Rick Nadeau speaking. The local EX time is 0506 hours. Currently, the ROV is on deck and we are conducting multibeam mapping opperations in the Gulf of Mexico.  The ROV is scheduled to dive at 0800. The water depth at our position is approximately 800m. Our present heading is 61° at a position of 29° 02'N, 088° 17'W. 04/17/2012,11:16:11,okeanosexplorer,This is a live update from the NOAA Ship Okeanos Explorer. This is Rick Nadeau speaking. The local EX time is 0615 hours. Currently, the ROV is on deck and we are conducting multibeam mapping opperations in transit to Pascagoula Dome.  The ROV is scheduled to dive at 0800. The water depth at our position is approximately 1300m. Our present heading is 114° at a position of 29° 00'N, 088° 06'W. 04/17/2012,12:04:37,okeanosexplorer, This is a live update from the NOAA Ship Okeanos Explorer. This is Adam Skarke speaking. The local EX time is 0705 hours. Currently, the ROV is on deck and we are conducting multibeam mapping operations over Pascagoula Dome.  The ROV is scheduled to dive at 0800 today. The water depth at our position is approximately 1100m. Our present heading is 280° at a position of 28° 59'N, 088° 02'W. 04/17/2012,12:45:12,kevinjerram,Good morning from CCOM/UNH 04/17/2012,12:47:59,celiacackowski,Good morning from ISC 04/17/2012,13:10:57,kelleyelliott,This is a live update from the NOAA Ship Okeanos Explorer. This is Kelley Elliott speaking. The local EX time is 0810 hours. Currently, the ship is preparing to deploy the ROV over the Pascagoula Salt Dome.  The water depth at our position is approximately ~1120m. Our present heading is 98° at a position of 28° 58.70'N, 088° 01.97'W. 04/17/2012,13:30:38,Jamie Austin,This is the Okeanos Explorer. Vehicles are in the water. This is Dive 05, over the Pascagoula Dome. Today, we will be assessing bubble streams from a disseminated and then a concentrated natural gas seep on the southern flank of this salt dome feature. Estimated water depth is ~1120 m. We will be using a grid installed on the front of the Little Herc ROV, in place of the cylindrical gas collection bucket deployed and used successfully on Dive 04, to inspect visually escaping bubbles.. 04/17/2012,13:33:58,Jamie Austin,Vehicles passing 100 m. 04/17/2012,13:35:48,kevinjerram,Good morning Jamie and crew. Is it a possibility to run the EK60 during today's dive? 04/17/2012,13:39:27,Jamie Austin,Vehicles passing 200 m. 04/17/2012,13:43:29,Jamie Austin,Vehicles passing 300 m. 04/17/2012,13:46:56,Jamie Austin,Vehicles passing 400 m. 04/17/2012,13:50:26,Jamie Austin,Vehicles passing 500 m. 04/17/2012,13:55:14,Jamie Austin,Vehicles passing 600 m. 04/17/2012,13:58:32,Jamie Austin,Vehicles passing 700 m. 04/17/2012,14:02:37,Jamie Austin,Vehicles passing 800 m. 04/17/2012,14:05:59,Jamie Austin,Vehicles passing 900 m. 04/17/2012,14:08:33,Jamie Austin,We will locate and conduct our visual census of bubbles at the concentrated bubble stream first, then move to the disseminated gas escape area. We captured gas from the concentrated stream during Dive 04. 04/17/2012,14:09:57,Jamie Austin,Vehicles passing 1000 m. 04/17/2012,14:11:53,Jamie Austin,Seirios sector scanning sonar shows both seep areas. 04/17/2012,14:13:50,Jamie Austin,Vehicles passing 1100 m. 04/17/2012,14:14:23,Jamie Austin,Little Herc has visual of the seafloor. 04/17/2012,14:17:12,Jamie Austin,Stabilizing the vehicle configuration. 04/17/2012,14:18:53,cordeslab,this is Erik. HUGE mussel bed! 04/17/2012,14:19:04,cordeslab,one of the largest I've seen in the Gulf 04/17/2012,14:19:14,Erin Becker,Live mussels, snails, magid crab 04/17/2012,14:20:17,cordeslab,at this depth, probably Bathymodiolus brooksi, but could be mixed with other species 04/17/2012,14:20:57,Erin Becker,maybe heckerae too 04/17/2012,14:21:30,Erin Becker,and I am pretty sure I saw some clam shells too 04/17/2012,14:22:16,cordeslab,possibly Childressi as well 04/17/2012,14:22:28,cordeslab,especially where there is abundant methane 04/17/2012,14:22:47,Erin Becker,what are the white snails that are everywhere? 04/17/2012,14:22:58,cordeslab,can we zoom in? 04/17/2012,14:25:15,cordeslab,Erin was asking about the snails, so a close up would be great 04/17/2012,14:25:47,cordeslab,looks like Cantrainea? 04/17/2012,14:26:14,cordeslab,mostly known from the upper slope 04/17/2012,14:26:17,cordeslab,rare at this depth 04/17/2012,14:26:36,cordeslab,but co-occur with childressi... 04/17/2012,14:28:00,cordeslab,I think I do see some childressi 04/17/2012,14:28:29,cordeslab,could stare at this forever, but you are welcome to move on 04/17/2012,14:29:01,cordeslab,sorry i missed the previous visit. must have been in Amsterdam... 04/17/2012,14:29:35,Jamie Austin,Moving across the mussel bed towards the concentrated seep. 04/17/2012,14:33:35,cordeslab,a few tubeworms 04/17/2012,14:34:26,cordeslab,CRA 04/17/2012,14:37:57,Erin Becker,UCH 04/17/2012,14:38:45,Jamie Austin,Bubble stream in sight. 04/17/2012,14:39:28,Jamie Austin,Bubbles are proximal to an outcrop completely encrusted with mussels. 04/17/2012,14:45:50,kevinjerram,bubble release on left of screen 04/17/2012,14:46:51,kevinjerram,more bubble release on left 04/17/2012,14:47:25,Jamie Austin,We are now doing a visual census of bubbles streaming in front of the grid. Lasers are on, and bubbles are streaming between them. 04/17/2012,14:50:11,kevinjerram,more bubbles on left 04/17/2012,14:52:25,Jamie Austin,Zoomed in on bubble escape. 04/17/2012,14:54:33,Jamie Austin,Lifting off the seep. 04/17/2012,14:55:49,kevinjerram,No bubbles observed rising behind the grid 04/17/2012,14:56:07,Jamie Austin,Searching for the disseminated bubble seep area. 04/17/2012,15:03:46,kevinjerram,foam marker in sight 04/17/2012,15:06:29,kevinjerram,bubbles in sight 04/17/2012,15:06:48,Jamie Austin,Disseminated bubble escape in front of LIttle Herc. 04/17/2012,15:10:27,Jamie Austin,Stable in front of one set of disseminated streams. 04/17/2012,15:16:06,Jamie Austin,Lifting off.. 04/17/2012,15:16:51,Jamie Austin,Looking for another set of disseminated bubble streams. 04/17/2012,15:20:32,Jamie Austin,Tubeworm. 04/17/2012,15:24:44,kevinjerram,bubbles in sight 04/17/2012,15:28:24,Jamie Austin,Attempting to stabilize the vehcies at the second location. Not completely clear that this is not the same location, given USBL uncertainty. 04/17/2012,15:29:28,Erin Becker,Lots of dead bivalve shells: looks like Calyptogena clams, Bathymodiolus childressi and probably B. brooksi 04/17/2012,15:29:39,Erin Becker,Live chitons and snails 04/17/2012,15:32:25,Erin Becker,A live mussel, childressi(?) in the middle 04/17/2012,15:33:14,Jamie Austin,Panning up to the grid. Will hold this view for 4-5 minutes. 04/17/2012,15:33:42,kevinjerram,a few large bubbles 04/17/2012,15:34:32,Jamie Austin,Multiple bubble streams in view in front of the grid. 04/17/2012,15:37:08,Erin Becker,The zoom seems to have creeped out, so it is all the way wide now 04/17/2012,15:37:21,Erin Becker,be sure to account for that during your analysis 04/17/2012,15:38:10,Jamie Austin,Lifting off. 04/17/2012,15:39:49,Jamie Austin,Attempting to find a third location for a disseminated bubble escape census. 04/17/2012,15:44:34,Jamie Austin,Starting our third census. Zoomed in on the seafloor escape, with lasers on. 04/17/2012,15:45:51,Jamie Austin,Panning up to the grid. 04/17/2012,15:52:29,Jamie Austin,Lifting off. Doing a mini-survey of the area of disseminated bubble escape. 04/17/2012,15:55:46,kevinjerram,bubbles rising near lasers 04/17/2012,15:58:30,Jamie Austin,Lateral survey of the immediate area. In orthogonal directions. A spatial assessment of the disseminated gas escape area. 04/17/2012,16:06:25,Jamie Austin,Seeing the persistent bubble stream in the rear view cam of Little Herc. Both the stream rising and the marker visible. 04/17/2012,16:07:25,kevinjerram,diffuse bubbles 04/17/2012,16:14:44,Jamie Austin,Heading back to the concentrated stream. Want to get topside before weather conditions deteriorate. 04/17/2012,16:15:32,Erin Becker,Back at the focused bubble stream 04/17/2012,16:15:55,Jamie Austin,Concentrated bubble stream identified. Want to rise with the bubbles, with them in view from both Little Herc and Seirios. 04/17/2012,16:19:37,michaelvecchione,FSH is a Cyclothone 04/17/2012,16:24:23,Jamie Austin,Rising slowly off the seafloor, Can still see bubbles with Little Herc about 20 m off and Seirios about 40 m off. 04/17/2012,16:26:35,Jamie Austin,Little her now about 40 m off. The occasional bubble still visible. 04/17/2012,16:29:33,Jamie Austin,Bubbles no longer visible. Heading to the surface. 04/17/2012,16:32:00,Jamie Austin,More bubbles. They are still showing up on the Seirios sector scanning sonar. 04/17/2012,16:37:54,Jamie Austin,Coming to the surface. 04/17/2012,17:04:43,kevinjerram,Thanks to the pilots, nav, and video crew for another great dive. 04/17/2012,18:57:25,okeanosexplorer, This is a live update from the NOAA Ship Okeanos Explorer. This is Adam Skarke speaking. The local EX time is 1400 hours. Currently, the ROV is on deck and we are conducting multibeam mapping operations over Pascagoula Dome.  The ROV is scheduled to dive at 0800 tomorrow. The water depth at our position is approximately 1200m. Our present heading is 90° at a position of 28° 59'N, 088° 01'W. 04/17/2012,21:58:54,okeanosexplorer, This is a live update from the NOAA Ship Okeanos Explorer. This is Adam Skarke speaking. The local EX time is 1700 hours. Currently, the ROV is on deck and we are conducting multibeam mapping operations west of Pascagoula Dome.  The ROV is scheduled to dive at 0800 tomorrow. The water depth at our position is approximately 900m. Our present heading is 241° at a position of 28° 53'N, 088° 25'W.