Dive R488  
        Dive Objectives: Same objectives as dives R485 - R487. To Mkr-33 for HFS and suction sampling, then on to Cloud and vents to the north on the '98 lava flow. Biology samples will also be collected.  
       At the end of the dive and Imagenex data will be collected at the western edge of the '98 lava flow.  
       Note: Nav fixes not edited in the logs. All fixes were logged, regardless of accuracy. Use the dive plots to determine actual positions.  
  UTC Hour Min Depth (m) Sub Hdng (deg) UTM X UTM Y Comments Frmgrbs, Photos, Samples
4 27 1 138 423861 5087236 ROPOS in the water  
5 38 1094 22 423822 5087115 Grape Jellyfish  
5 59 1485 89 423822 5087132 On the way down, near bottom, in the hydrothermal plume. Water is cloudy.  
6 1 1509 90 423812 5087119 On bottom. Glassy looking lobate flows.  
6 3 1517 173 423826 5087129 Lava whorl  
6 3 1522 262 423830 5087130 Lava whorl in sheets R488-3
6 4 1521 134 424662 5087328 Sheet flow with bacterial mat between cracks. Ropy sheets some lineations. Some fractures and steps in more or less continuous flow surface.Yellowish sed. thinly coats surface of flow but white mats concentrated on some cracks.  
6 7 1520 133 423886 5087090 Looks like a possible contact with more pillowed forms in distance.  
6 9 1523 276 423876 5087090 Heading west along flat sheets. Elevator in distance. Photo taken. First 4 photos were not logged here. Photo
6 11 1521 248 423867 5087067 wandering around elevator.(3 photos of elevator)  
6 15 1525 190 423841 5087113 All bad fixes since we got to the bottom. More photos here and frame grab. (photo of osmoanalyzer) R488-3
6 17 1519 135 423829 5087115  
 6 18 1521 212 423831 5087122 Mkr-33 FG R488-5
6 18 1520 213 423831 5087122 Mkr-33 crack in pushup in lava. R488-6
6 18 1523 210 423839 5087114 Crack at Mkr-33 R488-7
6 18 1524 213 423839 5087114 Getting close to vent in crack. Photo of vent, close up photo of venting in fissure.  
6 19 1525 217 423573 5087074 Fluid sample site at Mkr-33 R488-8
6 19 1524 215 423839 5087108 Close up of vent. R488-9
6 22 1525 216 423852 5087097 Putting the fluid sampler in the vent. Temp up to 24 C. 32, 34, 35.40 max. White coating on sides of flow, scale worms and tube worms on edges and under flow. Temps going up. 68, 70. Sampling bag 14 HFS-14_dfl

_R488-1
6 27 1525 215 423837 5087112 When sample 1 HFS was taken. 70 C water T. R488-10
6 28 1525 215 423756 5087359 Diffuse flow hot water sampling, temps in upper 60's.  
6 34 1525 218 423838 5087110 Sample stopped at 6:34. Max temp 70.4  
6 35 1524 217 423838 5087111 Another sample from same site. Filter 6.  



HFS-6_dfl _R488-2
6 38 1525 216 423832 5087121 Temp as high as 73.2 C at this site during sampling. frame grab taken here. Sampling filter 6  
6 39 1525 218 423717 5087586 Sampling At Mkr-33 with the old HFS R488-11
6 42 1525 217 424658 5087313 Bad tearing on the video.  
6 45 1525 214 423838 5087108 lost video signal  
6 48 1525 216 424662 5087314 Stopping sampling, max 73.2 degrees.  
6 49 1525 218 423832 5087109 Going to sample filter 15 of fluid sampler starting at 6:50 max temp 73.9 C. HFS-15_dfl _R488-3
6 51 1525 218 423291 5087263 Worms galore at Mkr-33 R488-12
6 52 1525 214 423838 5087112 Sampling temp rising up to 78.  
6 56 1525 218 425062 5086927 More worms at Mkr-33 R488-13
7 3 1524 215 423849 5087100 Stopping sampling. 1.5 liters. Taking stb. gas tight. Same diffuse vent site. 68.8 C. gtb-7_dfl_R488-4
7 5 1525 216 423837 5087112 Yet more worms at Mkr-33 R488-14
7 5 1525 216 423836 5087112 Ended gas tight.  
7 10 1525 214 423829 5087128   R488-15
7 10 1525 215 423836 5087113 Photo of palm worms at Mkr-33. Now we're looking at the honey bear in the slurp sampler - I'm sorry I gave you bad MOJO. Photo-13
7 13 1525 220 423840 5087111 Slurping up palm worms from the crack at Mkr-33. Started sample at 07:15. SS-j1_bio

_R488-5
7 19 1524 211 423837 5087113 Frame Grab of suction sampler sucking up palm worms at Mkr-33. R488-16
7 19 1524 213 423837 5087113 Suction of worms at Mkr-33 R488-17
7 22 1525 214 423890 5087319 Looking at bottle J4 at the palm worms-suctioning more.  
7 27 1525 218 423838 5087114 Still trying to get more worms and bacterial mat in bottle J1.  
7 30 1524 216 423838 5087110 Honey Bear in J1 at Mkr-33 R488-18
7 32 1525 222 423838 5087111 Still sucking palm worms into bottle J1.  
7 41 1525 218 423838 5087112 Spewing rocks out of the suction sampler hose.  
7 42 1524 217 423838 5087113 Done with Jar J1. Flushing the line.  
7 43 1524 214 423830 5087140 Oops, honey bear is in jar #4 R488-19
7 44 1525 218 423823 5087105 Checking the suction sampler for a possible problem-trying to flush.  
7 48 1525 218 423827 5087120 We are successfully flushing - the bear is dancing.  
7 52 1525 215 423837 5087115 We're in bottle #3 to suction bacterial mat in the crack of Mkr-33. SS-3_mat _R488-6
7 55 1525 231 423826 5087135 Suction sample of bacterial mat at Mkr-33 R488-20
7 56 1525 229 423826 5087135 Suctioning up bacterial mat and a few worms at Mkr-33 R488-21
8 2 1524 244 423839 5087106 Because we're not getting our fourth transponder, we're getting good fixes but they're offset from the real position by 20 m to the northwest.  
8 2 1524 243 423840 5087113 Jar #3 with bacterial mat from Mkr-33 R488-22
8 3 1524 245 423834 5087113 Still sucking on bottle 3.  
8 6 1524 216 423837 5087107 Moving elsewhere along the crack to get more bacterial mat in Jar 3. Moved 1 m to the side.  
8 11 1524 226 423820 5087110 Suction bottle 3 full of bacterial mat and worms. R488-23
8 11 1524 225 423820 5087110 Now we're getting ready to go to Snail Vent to collect snails! 30 m at 110 will take us there.  
8 13 1524 226 423829 5087137 Saw a scale worm (Lepidonotopodium) covered in bacterial mat- it has no gills.  
8 15 1523 89 423838 5087122 Ropy sheet flows.  
8 17 1523 91 423718 5087582 Sheet flows sort of like broken up shelf steps, covered in orangey iron rich sediment/bacterial goop. Looks primarily inorganic.  
8 19 1523 354 423846 5087122 We can see some more venting in a crack here - looking for Snail still, but we are investigating this crack with diffuse flow coming out. There are lots of gastropods and tube worms.  
8 21 1524 328 423852 5087127 Problems with video.  
8 21 1525 328 423851 5087128 Photo of snail vent. The sulfide worm is here- sorry, they're not tube worms. Photo-14
8 22 1524 319 423558 5087585 Snail vent w/ worms. R488-24
8 22 1524 319 423558 5087585 Worms at Snail vent R488-25
8 23 1524 313 423855 5087126 Same worms at Snail vent R488-26
8 23 1525 312 423856 5087122 We see Paralvinella sulfincola or pandorae? We're not sure. Photo-16
8 24 1525 307 423845 5087143 Photos of worms. We're pretty sure this isn't Snail, it's just further down the crack from Mkr-33.  



Photo-17
8 26 1525 304 423857 5087124 We're going to take a few minutes to look for the real Snail Vent now since we don't have the right mesh for this.  
8 27 1526 350 423855 5087124 Dead tube worms covered with bacteria near Snail vent. R488-27
8 27 1524 64 423852 5087133 Lumpy lavas - looks pretty lobate. We're seeing some dead tube worms overgrown with bacterial white gooey mat. There is orange stuff floating around. Looking at some of these cool lava arches. Very cool. Photos 18 - 20  
8 28 1524 79 423857 5087127 Still searching for Snail. We think we've found it.  
8 28 1524 79 423857 5087127 Still searching for Snail. We think we've found it.  
8 30 1520 109 423856 5087147 Drained lava lake, lava pillars, lots of neat lava structures.  
8 31 1523 110 423858 5087142 We are at Snail! Right near Mkr-N8. There are tons of snails and scale worms too. Photo-21

Photo-22
8 32 1525 73 423872 5087105 We can see some pretty intense webby mat, bag creatures, snails, scale worms.  
8 33 1524 64 423872 5087112 We will be suction sampling fauna into Jar J4. SS-j4_bio_ R488-7
8 36 1525 43 423776 5087656 Preparing to sample from Snail Vent.  
8 37 1525 14 423851 5087145 Suctioning snails from Snail Vent. R488-28
8 39 1525 357 423851 5087153 Commencing suctioning at Snail Vent.  
8 40 1525 3 423848 5087148 Suctioning Snails at Snail Vent R488-29
8 43 1525 63 424463 5086862 Sample R488-7 is looking god.  
8 45 1525 68 423884 5087067 The lava is quite flimsy - lots of bacterial action. Note: Julie is using sound effects.  
8 48 1525 74 423776 5087352 Still suctioning and spewing at Snail Vent.  
8 50 1525 77 424160 5088133 Filter on J4 looks clogged. Trying for a few more snails.  
8 52 1525 76 423853 5087141 Suctioning snails at Snail Vent R488-30
8 58 1525 76 423852 5087150 Finished sampling Jar J4.  
9 2 1525 78 423842 5087049 Taking a temperature measurement at Snail Vent with the Fluid Sampler temperature probe.  
9 3 1525 79 423845 5087056 Max temp is 13.0 C  
9 7 1525 77 424571 5087286 We are now making our way to Cloud Vent for Fluid Sampling and Suction Sampling.  
9 9 1524 13 423842 5087048 Just finished suction sampling at Snail, and are heading to Cloud vent.  
9 11 1522 59 423491 5087529 At Cloud vent. Photos of the approach. Photo-23

Photo-24
9 12 1524 331 424902 5086973 Fixes are still NOT good. We're on the west side of Cloud.  
9 14 1526 336 423868 5087049 At Cloud. There are tube worms (small clumps and sparse individuals) and very dense aggregations of polynoids. Will probe for temperature at this location to decide whether to sample here or at the marker location (mkr N4)  
9 17 1526 330 423844 5087048 Worms at Cloud vent R488-31
9 18 1525 341 424119 5086879 Lots more tube worms sparsely distributed in the cracks. Don't see any good grabbable clumps yet though.  
9 21 1522 256 423870 5087053 We found Mkr-N4 - there are traps, worms, mat, polynoids and scale worms.  
9 22 1525 246 423904 5087109 Mkr-N4 R488-34
9 22 1525 252 423870 5087053 Bacteria traps at Cloud vent, Mkr-N4 R488-32
9 23 1525 245 423841 5087043 We're at the western edge of this vent.  
9 24 1525 246 423710 5087512 Take it back- we're looking west. Temp around 8 and 9 C.  
9 25 1525 245 423742 5087112 The temperature near the bacterial traps is 18 C. The traps already have grazers on them and they were put down a mere 3 days ago! We just saw the new species of worm!  
9 28 1524 258 423839 5087056 Photo of mkr N4. Photo
9 31 1524 355 423841 5087053 Probing for temperature right in between bacteria traps at Mkr-N4. Polynoids in view, and the 'unknown polynoid'. Temps up to 18 degrees C.  
9 36 1523 259 423839 5087058 Cloud vent (N4) with traps and worms R488-35
9 35 1523 271 423839 5087058 Mkr-N4. Swimming polynoid. Took several photos  
9 38 1524 243 423844 5087042 Still probing for temperature trying to find a good place to fluid sample. Up to 18.4 degrees C.  
9 43 1524 243 423486 5087525 Taking a fluid sample - bag #17 with no filter. Starting to sample at 09:4. Took Photo-29  



HFS-17_dfl

_R488-8
9 50 1524 243 424560 5087266 stopped filter sample  
9 58 1524 242 423844 5087051 Scream mask at N4? R488-39
9 59 1524 243 423844 5087051 View of new scale worms. Lots o' flow and heat - 19.1 degrees C.  
10 1 1524 243 423824 5087095 New species of worm at Mkr-N4 (Cloud vent) R488-41
10 1 1524 242 423824 5087095 GREAT close up of new scale worm!  
10 2 1524 241 423907 5087074 Distant view of new species of worm at Mkr-N4 R488-42
10 5 1523 249 423907 5087073 Going to look for the 'hotter hole' in the vicinity of Mkr-N4. Photos 30 - 33  
10 8 1524 242 423774 5087292 Lots of sparse tube worms. Jumbled lava. Photos 32 and 33.  
10 11 1525 354 424006 5086794 Cloud abyss R488-43
10 10 1522 70 423795 5087166 At a different hot spot in Cloud area now, can't say exactly where. A big hole with lots of venting. Sparse tube worms. Stopping to take a temperature reading. Photo-34
10 15 1525 326 423846 5087052 The pit at Mkr-N6 R488-44
10 14 1525 327 423841 5087051 Temperature up to 20 degrees C. We are at Mkr-N6. Some kind of lava drainage pit. Photo-35
10 21 1526 332 423827 5087036 Started piston sample #2 at 10:10. Temperature up to 20.3 degrees C. HFS-2_df

l_R488-9
10 23 1526 329 424480 5087601 Navigation has moved position of Mkr-N4 from where it was last year to x=423905.9, y=5087109.6 - based on big Keith's piloting.  
10 25 1526 334 423536 5086617 Stopping pumping into piston #2- 615 ml pumped . Starting gas piston #24 in same spot. HFS-24_dfl _R488-10
10 27 1526 330 423712 5087520 Stopped pumping #24 - 130 ml pumped. Starting to pump bottle #3 with a filter on HFS at 10:28. HFS-3_dfl

_R488-11
10 30 1526 332 423868 5087511 Tube worm at N6 R4845
10 34 1526 332 423714 5087518 Sample #3 stopped - 672 ml pumped.  
10 35 1526 330 423871 5087062 Flushing the line for a GTB sample - planning to fire the port GTB.  
10 38 1525 331 424718 5087025 Firing port side gas tight bottle. Temperature 20.3 degrees C. gtb_dfl_R488-12
10 42 1525 335 424691 5087066 Start pumping filter #7 on HFS - for sulfur. Still in same spot at Mkr-N6. HFS-7_dfl

_R488-13
10 48 1525 331 423956 5087073 Hightlight on  
10 48 1525 328 423956 5087073 Scale worms R488-47
10 48 1525 334 423956 5087073 Worms at N6 (Cloud) R488-46
10 49 1525 333 423717 5087515 Scale worms: high density at N6: eranchintogluma (genus) R488-48
10 50 1525 329 423806 5087148 Stopping sample, 80ml volume.  
10 51 1525 329 423845 5087046 Still photo of scale worms in high density and tube worms. Photo
10 51 1525 330 424689 5087060 scale worms at N6 R488-49
10 53 1525 331 423859 5087062 Completed fluid sampling, now going to maker N4 to do suction sampling.  
10 55 1525 335 423843 5087047 No good nav. It's getting worse.  
11 1 1521 92 423862 5086990 Heading back to N4 to do suction sampling.  
11 7 1522 44 423453 5086878 Nav still bad.  
11 7 1522 163 423453 5086878 Still photo Photo
11 10 1519 354 423453 5086878 Still photo Photo
11 11 1521 306 424409 5087694 Positioning at N4 to begin particle sampling.  
11 13 1522 243 423910 5087074 Flushing the suction sampler bottle with honey bear.  
11 18 1523 243 423845 5087051 Temp 18.2 from earlier reading. Positioning suction sampling probe.  
11 19 1523 245 424586 5087587 Starting suction sample J3  
11 21 1523 246 423470 5086849 Repositioning probe.  
11 22 1523 244 423470 5086849 Position of suction probe. R488-50
11 23 1523 245 423470 5086849 suction sample SS-j3_dfl

_R488-14
11 29 1523 243 423887 5087133 Stopping J3 but will come back to it later on.  
11 35 1523 263 425230 5086788 Begin suction sampling in 1 for mat material for Moyer. Sucked some rocks. SS-1_mat

_R488-15
11 42 1523 288 424695 5087420 Still sampling for mat but adding in a new worm or two as well. Sampler is reversed periodically to back flush rocks.  
11 48 1523 285 424958 5087258 Still sampling for mat material.  
11 52 1523 287 423885 5087127 Finished sampling on bottle 1. Mats and worms.  
11 53 1523 285 423888 5087134 Returning to jar J3 to continue sampling for snails, mat, etc.  
11 56 1523 247 423886 5087137 Repositioning to sample for J3 to sample for animals.  
11 58 1523 246 423874 5087582 Probe arm dislodged a large rock and caused a debris storm.  
11 59 1523 246 424953 5087259 Begin sampling scale worms into J3  
12 4 1523 239 423894 5086984 Mkr-N4 R488-51
12 4 1523 239 423894 5086984 Trying to collect snails.  
12 10 1523 235 423870 5087118 Still collecting animals in J3.  
12 13 1523 234 423889 5087127 ROPOS is repositioning, will continue with J3.  
12 16 1523 270 423890 5087126 Resume sampling J3.  
12 19 1523 260 423889 5087126 Finished with J3. Going to the bear bottle (J4) for tube worm. Bottle 2 will be particulate.  
12 21 1523 260 423888 5087126 Correction the bear is in bottle 4 not J4.  
12 21 1523 261 423889 5087123 VCR tapes were changed at 1204  
12 22 1523 260 423889 5087123 Honey Bear R488-52
12 22 1523 260 423891 5087127 Still photo. Photo
12 23 1523 268 424953 5087255 ROPOS is repositioning.  
12 24 1523 261 423890 5087126 Begin worm sampling in flushing bottle. SS-4_bio

_R488-16
12 25 1523 278 423890 5087126 ROPOS is repositioning.  
12 28 1522 281 423890 5087125 Continuing to sample worms.  
12 30 1522 300 424334 5086908 ROPOS made a short reposition move. Sampling more worms.  
12 35 1522 246 423891 5087125 ROPOS repositioned for last attempt at worms.  
12 37 1522 266 423890 5087126 Sample completed. Will go back to N6 to do a particulate sample.  
12 40 1522 218 423890 5087127 ROPOS is repositioning to N6. Highlights on.  
12 44 1524 339 423888 5087136 Still photo back at N6 Photo
12 45 1524 349 423887 5087142 Highlights off.  
12 47 1524 354 423904 5087113 Start sample J2 at Mkr-N6 for particulates. SS-j2_dfl

_488-17
12 56 1524 1 423892 5087121 We have a problem. The fluid sampler probe has been broken off. Suction sampler is stopped. Probe is broken of at support plate.  
12 58 1524 4 423894 5087128 Broken probe for fluid sampler. R488-53
13 0 1524 1 423889 5087128 Testing the 7 function arm to see if it has been damaged. So far it looks ok. It may be possible to still sample with the probe. Probe itself still looks functional.  
13 4 1524 1 423892 5087122 Highlights on.  
13 6 1524 4 423894 5087128 Tube worms and large Pandorae at N6. R488-54
13 6 1524 6 423893 5087129 Finished sampling at N6 and will move back to the cage before moving north.  
13 7 1522 24 423894 5087128 Still photo of worms at N6. Photo
13 9 1517 218 423889 5087128 Heading back to the cage.  
13 10 1488 256 423889 5087128 Navigation is still not god.  
13 11 1492 294 423884 5087043 Back at the cage.  
13 13 1521 4 423853 5087096 ROPOS is on the bottom, heading north about 30m to Nascent vent. Hightlights on.  
13 15 1521 4 423839 5087117 Still photo of bottom near Mkr-33. Photo
13 16 1521 360 423839 5087117 Photo of bottom near Mkr-33 photo
13 16 1522 3 423839 5087117 Orange stain on bottom. Photo
13 17 1521 4 423839 5087117 same as above photo
13 17 1520 4 424838 5086690 photo of dead tube worm group photo
13 18 1519 3 424838 5086690 No fixes  
13 18 1517 6 425154 5087185 bottom Photo
13 19 1518 3 423834 5087138 Lava pillars. photo
13 21 1516 2 423846 5087134 Stopping highlights.  
13 23 1519 4 424973 5087277 Photo of collapsed area with pillars. photo
13 24 1518 6 423653 5087813 Pillar Photo
13 24 1518 4 423841 5087120 bacterial mat on pillar photo
13 25 1518 7 423843 5087160 Edge of collapse area. photo
13 25 1517 7 423843 5087160 collapse pit photo
13 26 1518 2 423843 5087160 Highlights on and photo photo
13 27 1518 6 423836 5087175 collapse area Photo
13 29 1518 1 423840 5087203 photo of rattail. photo
13 31 1517 12 423840 5087214 Photo of lobates Photo
13 31 1517 32 423848 5087239 Rat tail R488-55
13 33 1518 33 423850 5087261 Photo of edge of collapse area. Maybe with crab. photo
13 34 1516 32 423851 5087259 Just changed the dive # on sit overlay from 487 to 488.  
13 36 1517 29 423872 5087293 Signs of venting.  
13 36 1516 34 423872 5087293 photo of area near Nascent vent. photo
13 37 1518 38 424187 5086782 Bottom showing signs of wear, hydrothermal activity. photo
13 38 1516 38 423901 5087309 Bottom. Getting some fixes. photo
13 39 1518 31 423877 5087352 Bacterial stain near edge of collapse area. photo
13 41 1517 3 423910 5087354 Bottom showing staining. photo
13 42 1518 359 423910 5087354 photo of live worms (but stressed?) photo
13 42 1518 6 423905 5087359 Bottom showing circular marks. photo
13 44 1518 357 423903 5087378 MTR line, shimmering water at Nascent photo
13 44 1518 340 423903 5087378 photo photo
13 45 1517 31 423904 5087388 Nascent photo
13 45 1517 31 423904 5087388 Nascent Vent R488-56
13 46 1518 68 423902 5087380   photo
13 46 1518 99 423902 5087380   photo
13 46 1518 107 423905 5087384 I think we just took 4 photos of Nascent. photo
13 46 1518 110 423904 5087387 position of MTR photo
13 46 1518 114 423904 5087387 Nascent Vent R488-57
13 47 1518 113 423905 5087389   photo
13 47 1518 113 423905 5087389 Positioning probe of fluid sampler (detached from arm.)  
13 48 1518 113 423894 5087376 Checking water temp = 4C  
13 49 1518 115 423910 5087372 Highlights off. Temp up to 10C  
13 50 1518 114 424110 5086989 Up to 12C on temp.  
13 52 1518 113 423894 5087376 HFS1 bag with a filter on it ready to start.  
13 53 1518 115 423894 5087376 start HFS11 488-18 at Nascent vent next to MTR HFS-11_dfl

_488-18
13 55 1519 112 423894 5087492 Highlights of. Temp is 10-1C during sampling.  
13 57 1518 115 423875 5087532 Highlights.  
13 57 1518 113 423875 5087532 Nascent Vent near MTR R488-58
        Tube worms at Nascent. Scale worms. R488-59
14 0 1519 115 423907 5087395 Sample HFS1 is complete.  
14 0 1519 110 423908 5087396 Max T during sampling was 15.5C.  
14 4 1519 112 423906 5087381 Position of MTR with critters at Nascent. R488-60
14 6 1516 355 424900 5087534 Photo of bottom before moving photo
14 6 1519 349 425126 5087098 same photo
14 7 1518 356 423904 5087392 photo of bottom photo
14 7 1517 356 423904 5087392 photo photo
14 8 1518 357 423990 5086180   photo
14 5 1519 114 423905 5087383   R488-61
14 8 1519 5 423990 5086180 bags on rope fish photo
14 8 1518 4 423990 5086180 Nascent Vent R488-62
14 9 1519 7 423905 5087407 VCR tapes changed.  
14 9 1519 9 423905 5087409 Rat tail at Nascent vent R488-63
14 9 1519 10 423904 5087412 feeding rat tail w/ worms MTR at Mkr-N41 photo
14 10 1519 13 423908 5087409 Highlights off and photo photo
14 13 1517 3 423905 5087413 Getting ready to move to pit. Fe staining photo
14 13 1518 2 424683 5087400 Photo of Fe staining photo
14 14 1519 20 423893 5087418 Highlights on.  
14 16 1517 7 423895 5087423 Heading to pit vent.  
14 16 1516 358 423895 5087423 Highlights off.  
14 21 1518 344 423894 5087427 photo of 1998 lava flow during traverse between Nascent and The Pit. Lobate uncollapsed part of flow. Few vents now, but lots of tan iron staining. 2 photos
14 24 1517 346 423628 5087169 lobate flow. small pockets of white mats between lobes. sparse crabs 3 photos
14 26 1519 345 423880 5087477 lobate roof. some pillows. few vent pockets photo
14 27 1519 345 423872 5087481 lobate lavas - mostly black now (little staining or venting). some collapsed lobes photo
14 29 1518 340 424951 5087500 lobate lava. sea star. ophuriods. 2 photo
14 30 1518 342 424394 5087609 seemed like we went over a contact into newer-looking glassy lava. maybe a kipuka of older lava? photo
14 31 1518 341 423849 5087537 remnants of brown mat on lava  
14 33 1519 337 423851 5087538 2 calanoid copapods on clump of flock R488-64
14 34 1518 345 423852 5087552 black shiny lobate lava. minor brown staining.  
14 35 1518 348 423845 5087569 photo photo
14 36 1518 347 423823 5087607 Good fix  
14 37 1518 344 423823 5087607 photo of collapse area photo
14 37 1518 341 423823 5087607 photo bottom with crab photo
14 39 1518 345 423816 5087608 collapse area photo
14 40 1518 343 423816 5087608 collapse area photo
14 40 1520 344 423816 5087608 collapse area photo
14 41 1517 340 423786 5087698 good fix  
14 44 1518 349 423746 5087736 Arrived at pit  
14 44 1518 344 423746 5087736 photo of pillars at Pit photo
14 46 1519 345 423737 5087754 Highlights on.  
14 47 1518 348 423742 5087774 Lava pillar. photo
14 54 1518 334 424881 5087801 At Mkr-N1 - 'The Pit'. Lobate flows. Lots of orange floc in water and in cracks. Sunken collapsed pit with white mat. Looks like venting has reduced from last year. photo
14 56 1519 287 423707 5087831 Putting the temperature probe in the pit to test for anomalies.  
15 1 1517 302 424678 5087832 Only a 0.2 degrees C anomaly. Will not fluid sample here.  
15 1 1518 356 424678 5087832 Collapsed area. photo
15 2 1518 330 424678 5087832 Heading north from Pit towards Roof vent.  
15 3 1518 360 423692 5087831 Lobate flow with orange iron oxides. photo of crab.  



photo
15 5 1519 2 423680 5087855 Rattail.  
15 5 1519 3 423680 5087855 Rat tail fish observed during move from N1 to Roof R488-65
15 13 1519 346 424755 5087872 Lava pillars. photo
15 14 1518 357 423693 5087877 Uncollapsed roof on lobate flow held up by pillars observed on route to the Roof location. R488-66
15 14 1519 356 424755 5087872 Collapsed area - pillars and caverns. Old lava flow supported by pillars.  
15 17 1518 2 423703 5087899 Zoarcid fish swimming away from us. Stopped and is sinking in the water column.  
15 19 1518 358 423690 5087931 Still heading north towards Roof - about 20 m to go. Another fish in view.  
15 20 1518 350 423682 5087933 Arched layered pillar structure.  

Photo
15 20 1518 356 423690 5087942 Pillars in lobate flows observed on route to Roof"" R488-68
15 22 1519 355 423687 5087952 Pillar with hole at top in lobate flow. R488-69
15 22 1519 353 423687 5087952 Small pillar with a sunken depression on top - hollow inside. Photo
15 23 1518 359 423690 5087969 Two crabs. Photo
15 26 1518 358 423683 5088011 Photo of bacterial mat at base of a cavern. Photo
15 28 1518 357 423683 5088054 Lobate lava. Photo
15 30 1520 6 424731 5086196 Ugly rattail.  
15 31 1519 357 422818 5083961 Lobate flow with a little bacteria. Photo
15 32 1519 1 423634 5088073 Highlights of oxide mat/deposits on lobate lavas. Photo
15 34 1520 1 423691 5088124 Photo of rattail in a small pit. Photo
15 35 1521 356 423695 5088134 At Mkr-N9 (MiniSnow). No profuse white floc like last year, but just a bit of white mat with mostly orange iron deposits. NO ANIMALS.  
15 38 1522 356 423695 5088134 Probing for temperature at mkr N9. Found an anomaly - up to 3.4 of a degree C.  
15 42 1522 354 423408 5087354 Start to sample bottle #18 of HFS at mkr N9. A scale worm and a few limpets here. HFS-18_dfl _R488-19
15 48 1522 351 423755 5087941 Close ups of orange stuff - looks like mat? sediment? Looking around while doing the fluid sampling.  
15 51 1522 356 423701 5088129 Stopping sample - pumped 720 ml. Highest temperature was 4 degrees C.  
15 54 1521 318 423714 5088135 Moving north again towards marker N3. Photo
15 55 1521 348 423689 5088161 Dead bush of tube worms - dead and covered with the orange mat/sediment stuff. Photo
15 55 1522 342 423689 5088161 Dead tube worm bush covered in orange sediment and surrounded by white mat observed on route to N3 R488-72
15 57 1522 338 424602 5088298 Lots of orange and white mats in between lobates.  
15 59 1522 338 425156 5087802 Bright red sediment/mat, much darker red then the typical orange mat we've been seeing. Photo

Photo
16 0 1522 345 425156 5087802 Red material found on bottom on route to N3 R488-73
16 2 1523 328 425156 5087802 Collapsed pit. Photo
16 4 1525 336 423672 5088214 Folded sheet flow lava.  
16 5 1526 341 423672 5088214 Jumbled lava, we are probably down in the collapsed area.  
16 8 1526 336 423672 5088214 Just came up past talus over a wall, out of the collapsed pit. Photo
16 15 1528 334 423632 5088288 Palm worm and scale worm in vent near N3 R488-74
16 9 1526 335 423672 5088214 Lobate lava flows with lots of bacterial mat in cracks. Lots of snails, a palm worm. Going in to probe for temperature. Good fix for this location: 3635,8290. T max at 16 degrees C. Near Mkr-N3. Starting to suck piston #20 of HFS at 16:16. 2 Photos

HFS-20_dfl _R488-20
16 22 1528 333 423633 5088284 Stopped pumping #20 - aprox. 650 ml.  
16 26 1528 339 423632 5088286 Starting to pump filter #2 of HFS for XRF. HFS-2_dfl

_R488-21
16 31 1528 334 423632 5088285 The poor bear. he earned this trip down. he sleeps with the worms and stuff. R488-75
16 33 1528 331 423626 5088302 Stopped pumping into #2. Max temp was 17.3 degrees C and 80 ml was pumped.  
16 38 1528 336 423626 5088292 starting new sample. gas piston. HFS-5_dfl

_R488-22
16 40 1528 337 423626 5088292 photo at sampling site. pulling sampler out of vent. near marker-N3 photo
16 43 1526 28 423627 5088293 We're on the MOVE! North to Milky vent!  
16 46 1528 30 423652 5088318 More dark red sediment/mat interspersed with regular orange mat.  
16 50 1526 31 423676 5088347 Lineated sheet flow. Not striated. Why? because it's lineated (Bill Chadwick quote). Photo
16 56 1528 3 423700 5088402 We were in ropy to jumbled sheet flow, but now in a lineated patch. So probably in a collapse. Photo
17 16 1529 313 423672 5088425 Found the Osmosampler at Milky vent!  
17 19 1532 57 423664 5088421 At the OSMO - Mkr N2 is at Milky Vent. There is also a bacteria trap here.  
17 21 1532 71 423666 5088428 Osmo sampler at N2-Milky R488-76
17 22 1532 54 423671 5088429 Osmo sampler at Milky R488-77
17 23 1532 57 423671 5088429 Osmo sampler intake at Milky w/Bacteria trap next to it. R488-79
17 25 1532 58 423664 5088427 Flushing the HFS and taking temperature measurements  
17 35 1532 61 423665 5088437 Starting to sample bag #19 of HFS at 17:36. HFS-19_dfl _R488-23
17 43 1532 64 422984 5088429 Stopped sampling #19, got 70 ml, max. temp. 3.4 degrees C.  
17 44 1532 64 422984 5088429 Main gauge shows the low hydraulic pressure for the ROPOS system R488-80
17 46 1532 64 423665 5088428 Heading to Easy Vent. About 20 m north of Milky.  
17 52 1532 62 422976 5088456 Before we leave for Easy we are trying to pick up the osmosampler from Milky.  
17 53 1527 27 423666 5088426 We are leaving Milky (Mkr N2) with the osmosampler in the port arm. Trying to get a better grip on the osmo.  
17 59 1529 337 424763 5088447 Have the osmo. Heading to Easy.  
18 1 1531 0 423670 5088428 Crab near Milky R488-81
18 1 1531 359 423670 5088428 Crab in view. Very strange lava morphology.  
18 5 1531 293 423671 5088450 Area near Easy Vent. Photo
18 6 1532 306 423661 5088451 Little oxide mounds. Photo
18 7 1527 201 425416 5087550 Tubular lobate lavas.  
18 9 1528 222 423676 5088455 Good ROPOS fix. Should be a couple meters to the NW.  
18 10 1529 225 423033 5088302 Going to go north laterally along the Milky-Magnesia line. Couldn't find Easy, so we're going to check out if there is other venting along the line.  
18 12 1527 3 423033 5088302 Out of the collapsed area into lobate flows.  
18 16 1526 343 423678 5088468   Photo
18 16 1526 349 423678 5088468 Only a little white-ish mat along the line of venting from last year. It seems like the venting has subsided significantly in the last year. 2 Photos
18 20 1527 8 423668 5088495 Nearing Ouzo Vent. Some residual bacterial mat in a deep crack. Photo
18 29 1533 350 423689 5088525 Going in with HFS probe to sample temp at Ouzo? vent - max temp is 3.6 degrees C. Difficulty getting the probe all the way into the crack. Fix on this location is x=3668, y=8518.  
18 33 1533 356 423689 5088525 Taking temp between lavas in crack. Highest T is not in the deepest part of hole. Temps in mid 3 degrees, higher up in hole. Fluid sample 16 at 18:37, bag without filter HFS-16_dfl _R488-24
18 40 1534 353 423676 5088519 End fluid sampling, highest T 3.8, but 3.5 when sampling  
18 42 1530 184 423668 5088515 Going back to cage for tether management.  
18 48 1529 48 423656 5088504 Pillar connected to roof or arch near the stern of ship/cage/Ouzo vent. R488-83
18 48 1529 48 423656 5088504 Down by cage, collapse area with nice pillars supporting collapsed roof. Photo of roof Photo
18 50 1530 85 423645 5088519 Traversing back to Ouzo Vent after tether management.  
18 51 1528 92 423701 5088502 Tree pillars in sequence near Ouzo vent. R488-84
18 52 1528 112 423701 5088502 pilars photo
19 6 1521 242 423641 5088484 Good fix.  
19 14 1528 90 423686 5088500 Photo taken in error photo
19 15 1528 266 423696 5088494 hmm crappy timing R488-85
19 15 1528 241 423696 5088494 Good fix.  
19 20 1529 95 423683 5088508 pillar R488-86
19 24 1532 321 423671 5088516 paw print R488-87
19 23 1530 311 423680 5088510 Arrived at Ouzo, finally. Will try to sample water.  
19 35 1527 295 423658 5088515 Repeating . Looking for place that sampling started at 18:40 was interrupted by need for tether management.  
19 41 1528 58 423655 5088543 At a previously undiscovered small vent about 10 m south of Magnesia Vent. Named Whiteout Vent  
19 45 1530 60 423656 5088554 whiteout vent R488-88
19 46 1530 62 423658 5088545 more blind temp probing R488-89
19 46 1530 53 423658 5088546 T max = 4.6 C R488-90
19 47 1530 53 423658 5088546 HFS sampler piston #23 getting ready. X = 3365.9 Y = 8526 with offset.  
19 52 1531 344 423658 5088547 Start sampling piston #23. HFS-23_dfl _R488-25
19 57 1531 343 424852 5085576 Sampling #23 piston completed. 60 ml. Max. T 5.6 C.  
20 0 1531 344 425382 5088120 Start DNA filter set #12 at same place as #23 at Whiteout Vent at 20:02.  
  20 5 1531 353 423651 5088552 Highlights tape on. Panning around Whiteout Vent while sampling. HFS-12_dfl _R488-26
20 11 1531 354 423555 5088719 Stopped sampling at 20:1. 1020 ml. T max. 5.1 C.

Next sample is bag #9 with filter.

  
20 12 1531 356 423656 5088550 Start sample #9. Bag has a POC (particulate organic mater) filter HFS-9_dfl _R488-27
20 18 1532 356 423449 5088873 Stopped sampling at 20.18 681 ml. Max. T 4.3 C.

Start HFS sampler filter #1 for FISH (fluorescent in situ hybridization). Photo

 HFS-1_dfl

_R488-28
20 22 1531 355 423654 5088548 shelf with hotter fluid on other side (video confused) R488-91
20 24 1531 358 423594 5088576 another shot of the shelf or plateau R488-92
20 25 1531 359 423553 5088710 lava bridge covered in snow (top previously referred to as "shelf" R488-93
20 27 1531 1 423656 5088558 polynoid close-up R488-94
20 28 1531 358 423678 5088562 oozing polynoid (maybe it doesn't like the company) R488-95
20 28 1531 358 423678 5088562 Stopped sampling. 105 ml. Max. T 5.1 C.Highlights on.  
20 30 1531 357 423678 5088562 Start HFS sample #10 with filter for lipids. HFS-10_dfl _R488-29
20 35 1531 2 429242 5083886 Stopped HFS sampler.  
20 41 1531 358 423649 5088552 Start HFS filter #21 at 20:40 HFS-21_dfl _R488-30
20 41 1531 358 424152 5088238 I now have light that doesn't interfere with anyone and I can finally see the keyboard. (Steve)  
20 53 1531 358 424600 5087761 smile button in a more reflective mood R488-96
20 53 1531 358 423648 5088554 snow blowing R488-97
20 53 1531 357 423648 5088554 snow blowing II R488-98
20 54 1531 357 423651 5088558 Stopped sampling. 1542 ml. T max 5.0 C Next will be HFS piston #4  
20 56 1531 356 424673 5088570 Started HFS piston sample at 20:56. Still at same place at Whiteout Vent. HFS-4_dfl

_R488-31
20 56 1531 358 423673 5088557 lava bridge again (higher flow on other side?) R488-99
21 2 1531 359 423651 5088553 Stopped sampler. 650 ml. T max 4.2 C Next (last) is HFS filter set #13.  
21 7 1531 1 423659 5088555 Started sampling DNA filter set #13 at 21:04. HFS-13_dfl _R488-32
21 11 1531 0 423622 5088584 white out R488-100
21 12 1531 1 423588 5088578 plume at white out R488-101
21 14 1531 360 423653 5088558 plume at white out R488-102
21 17 1531 359 423653 5088558 plume at white out R488-103
21 17 1531 359 423653 5088558 Getting suction sample jar J2 ready at Whiteout Vent.  
21 20 1531 358 423650 5088554 Stopped DNA filter sample. End of HFS sampling - al l containers are full.  
21 26 1532 14 423650 5088554 Start suction sample into jar J2. Intake is dangling (5 function is holding a recovered osmosampler) over the snowblower at Whiteout Vent at same place where all HFS samples were taken. SS-j2_dfl

_R488-3
        Will be a slow process. Considered opinion is that the floc is mucus - bound sulfur produced by bacteria.  
21 39 1532 10 423654 5088555 you WORM! R488-104
22 0 1532 15 423710 5088526 End suction sample in jar J2 at Whiteout Vent.  
22 5 1531 84 423648 5088552 Leaving Whiteout vent R488-105
22 5 1531 82 423648 5088552 Highlights on. Whiteout Vent.  
22 7 1531 72 423648 5088552 Whiteout vent R488-106
22 7 1531 73 423648 5088552 Photo of Whiteout Vent. Counter says #174 or 177. Monitor says #198. Take your pick, or none of these.  
22 11 1522 59 423652 5088540 Highlight video stopped.  
22 16 1478 274 420625 5088006 All video recording stopped. Getting ready for (yawn) Imagenex single line back to elevator.  
22 28 4397 268 423568 5088479 Oil reservoir has only 4% left on sub display.  
22 47 1510 322 423418 5088499 Starting Imagenex line W4 running from due west of Whiteout Vent proceeding south along west edge of '98 lava to elevator as a fill-in line for '98 NeMO survey. Auto altimeter not working.  
22 57 1508 178 423568 5088168  
 23 2 1509 105 423365 5088471 These are good navigation numbers. Apparently we are behind the cage.  
23 53 1499 178 423429 5087592 Approximately 450 m to go.  
0 19 1496 182 423430 5087202 10 meters away from the corner  
0 32 1497 128 423417 5087126 Turning the corner of the line and heading to the elevator. Lost oil pressure on the hydraulics.  
0 39 1397 192 423412 5087128 Lost hydraulic pressure right where we were leaving imagenex line w4 to go over to the elevator. ropos back in cage and heading back to the surface  
0 47 1197 215 423412 5087128 On our way up.  
       Dive Summary: We started at Mkr-33 and took filter samples,

fluid samples, slurp samples, and one Ti gas-tight sampler. We then moved to Snail and Marcus took a slurp sample.

 
       We also took temperature measurements at Snail with the HFS and got a Tmax = 13. We then moved to Cloud, Mkr-N4 and Mkr-N6 where Ti gas-tight, gas piston, regular piston, bag samples and filtered slurp samples were taken.  
      Bag samples were then taken at Nascent and MiniSnow Vents. At Mkr-N3 bag, filter, piston and gas piston samples were taken. Bag samples were then taken at Milky and Ouzo Vents.  
      We then came upon Whiteout Vent, a previously unnoticed area and took a gas piston, filters for DNA, POC, sulfur and lipids, piston and bag samples. The remainder of the dive was an Imagenex survey, until oil pressure was lost and the dive aborted.  
      Notice: Due to the nav offset, as not all transponders were working, it was later determined that "Whiteout Vent" is actually Magnesia Vent discovered in '98. Much more active in '99.