Dive R492  
      Dive Plan: To map and sample '98 lava flow, SRZ. Sample Dying Vent, if still in existence, and any new vents we might see. Also possible suction sample for Tunnicliffe of diatom/sediment on new lavas.  
      ROPOS Configuration :Suction Sampler, 5 and 7 function arms with claws, cameras, and BioBox with a marker in each side and 4 rock samplers in a bag  
      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
8 55 0 128 422710 5089068 ROPOS launched and in water. Moderate seas. Keith nervous. Snap load on down umbilical.  
  8 59 32 148 422710 5089068 ROPOS out of cage.  
10 37 1499 329 425223 5083490 ROPOS is at 150 m.  
10 39 1496 311 422938 5085206 We are going to the bottom.  
10 40 1527 171 424442 5085776 Bottom in sight.  
10 41 1533 198 423629 5085815 We can se ophiouroids on pillow lavas.  
10 45 1533 178 424126 5085844 took photo of bottom, pillows  
10 49 1531 236 424210 5085780 Making traverses trying to find contacts between old and new lava. Initial bottom was old lava.  
10 50 1531 307 424203 5085782 A number of holothorians heading NW back to line. Lobate flow. photo 3
10 52 1533 310 424186 5085799 Lots of cucumbers. A drain-out pit.  
10 53 1530 255 423823 5086232 Collapsed lava pit  
10 53 1529 251 423823 5086232 Lobate flow with holes drain out holes.  
10 54 1529 252 424168 5085788 Going SW in more extensive drainout area. R492-1
10 55 1530 250 424168 5085788 Speed is only .5 knot. More holothorian.  
10 55 1530 253 425264 5084278 Collapsed lava pit  
10 55 1530 250 425264 5084278 photo of drain area. 2x photo counter advanced but no flash was seen. fish.  
10 56 1530 252 424159 5085780 back to more solid lobate flows. R492-2
10 58 1530 250 424165 5085776 Ophiuroids. More solid lobate flow. Some pillows mixed with lobates. photo 6
10 59 1531 270 424142 5085771 Lobate lavas. Two flashes. Counter only advanced one  
11 0 1531 273 424136 5085771 Fish and two camera flashes again.  
11 1 1531 270 424135 5085769 Holothorians and fecal trails. photo 7
11 1 1531 273 424129 5085775 Holothorian. Start Highlight tape. Lobate flow with ophioids. photo 8
11 2 1530 271 424111 5085774 Double flash  
11 3 1530 270 424111 5085774   photo 12
11 3 1530 271 424104 5085772 Young lava flows photo 13
11 3 1530 258 424104 5085772 contact with new flow . Clean looking lava. mats not present. less material photo 14
11 4 1530 257 424091 5085768 Pillow lavas with some brittle stars R492-5
11 3 1530 259 424098 5085771 younger lavas. Ophiods on with brittle stars. Density down from older flow. Lobate flow, flatter with small pockets of sediments. photo 15
11 4 1530 255 424078 5085762 Ophiods. R492-6
11 5 1529 257 424078 5085762 Drainout pit photo 16
11 5 1529 257 424078 5085762 Drain out area  
11 5 1529 240 424070 5085759 Skate or ray swimming away R492-7
11 5 1529 244 424070 5085759 a ray going away. photo 17
11 5 1529 259 424062 5085755 young flow glassy especially on the fronts. speed .5 knot R492-8
11 6 1529 257 424044 5085744 young lobate flows. coming at us. flow direction was towards us. photo 18
11 6 1529 257 424034 5085739 Solid lobates close up  
11 7 1529 256 424030 5085740 close up of lavas.  
11 7 1529 260 424030 5085740 Close up of some lavas  
11 8 1529 258 424013 5085734 thin lava about 1 meter thick. photo 19
11 9 1529 259 423996 5085728 so far we have come about 20 m along the 1.2 km line still in young lava, pillowy lobate, probably thin R492-9
11 10 1528 262 423980 5085723 edge of a drain out area  
11 10 1528 255 423980 5085723 Edge of drained out pit  
11 10 1528 255 423980 5085723 drain out  
11 11 1529 260 423540 5085878 shrimp. a little yellow sed at the bottom of lobates R492-10
11 11 1528 257 423968 5085718 back to more solid flow. photo 20
11 11 1529 256 423963 5085716 small pockets of sediment but not as much as last year.  
11 13 1529 258 423936 5085703 close up of lavas.  
11 13 1529 256 424490 5086026 Broken up lavas  
11 13 1529 258 424490 5086026 becoming more broken into drain photo 21
11 14 1528 256 424490 5086026 Skylight of drained out area R492-12
11 14 1528 256 424490 5086026 skylight couple meter thick  
11 14 1529 256 424262 5085771 in a major collapse area R492-13
11 15 1530 255 423946 5085716 broken roof material photo 2
11 15 1528 257 423916 5085690 A fish  
11 15 1528 258 423916 5085690 in drain out, broken material w/ fish  
11 15 1529 256 423933 5085712 broken pohoi hoi R492-14
11 15 1530 257 424306 5085995 broken curtain folded photo 23
11 16 1530 258 423891 5085682 drain out area  
11 16 1529 256 423886 5085686 drop of into a pit. shrimp. photo 24
11 17 1530 257 423870 5085678 drain out area photo 25
11 17 1530 253 423853 5085670 collapse sheets. More broken, sharp changes in lava morphology . complex flow  
11 18 1530 256 423844 5085667 Jumbled ropy lava photo 26
11 18 1529 252 423829 5085789 jumbled flow with lots of collapse area  
11 19 1529 257 423826 5085660 fish and complex lavas in R492-17
11 19 1530 256 423832 5085670 Rat tail fish  
11 19 1530 248 423832 5085670 lava spire w/ glass photo 27
11 19 1529 265 423832 5085670 broken up area, jumbled flow. R492-18
11 20 1529 260 423826 5085667 sometimes coherent ropes, other times more broken up. going over ridges. photo 28
11 20 1530 252 423806 5085663 close up of jumbled flow  
11 21 1529 256 423797 5085662 over a ridge into a deeper area.  
11 21 1530 243 423740 5085939 we are in line with the deepest photo 29
11 22 1530 257 423777 5085660 complex terrain jumbled broken  
11 23 1532 257 423761 5085658 mostly random chunks of angular lava, piled up  
11 24 1532 259 423753 5085654 hydrothermal sediments  
11 24 1530 257 423753 5085654 Scary looking rat tail  
11 24 1529 260 423750 5085652 yellow sediment, over top of ridge, lineated flows photo 30
11 25 1531 258 423728 5085644 ridges are several meters high, last down drop was 4-5 m R492-19
11 25 1532 258 423727 5085642 lobate surface  
11 26 1531 258 423721 5085638 jumbled again, don't see many animals in here  
11 26 1530 257 423710 5085634 blocks of lava on ridge, on the other side drained out lobates with circular ?  
11 27 1529 257 423696 5085629 lobates  
11 27 1529 257 423696 5085629 Collapsed lava pits photo 31
11 27 1529 256 423696 5085629 back into lobate flows again photo 32
11 27 1530 257 423682 5085623 very glassy lobate R492-20
11 28 1529 261 423674 5085618 Window of old lava surrounded by new lava  
11 28 1529 258 423682 5085623 window of older lava indicating thin ?  
11 28 1528 262 423674 5085618 same R492-21
11 28 1527 264 423674 5085617 lobate photo 3
11 29 1524 245 423689 5085615 highlights off, lost controls, joystick is not functioning. photo 34
11 29 1522 253 423711 5085634 stopping the ship photo 35
11 45        Video off.  
12 25 1496 298 422940 5084868 testing repairs that were made to the joystick  
12 27 1525 260 422940 5084868 back on the bottom. Video back on.  
12 28 1527 260 422407 5084350 back to the lobate flow  
12 28 1528 264 423052 5084936 solid glassy lobate lavas.  
12 29 1529 261 423532 5085556 good sub fix, to SW of ship  
12 30 1529 259 423565 5085596 shallow drained out area, collapse material  
12 31 1529 249 423023 5085025 collapse material  
12 31 1529 261 422830 5084834 small spire, back on the solid lobate surface of the flow.  
12 33 1524 259 423496 5085535 good fix photo 36
12 33 1529 259 423496 5085533 lobate lavas w/ some sediment , on glassy lobes. fish - lots of big ones  
12 33 1529 259 423496 5085533 Pillow lavas  
12 34 1530 260 423583 5085692 close up of lobate surface  
12 34 1528 252 423481 5085530 somewhat more sediment, but not many organisms, shallow drain out area, back to lobate area R492-22
12 35 1529 258 423468 5085528 lobate surface photo 37
12 36 1530 260 423466 5085528 Lobate lavas  
12 36 1530 258 423482 5085547 lot of small pockets of sediment, holothorian, more sediment photo 38
12 37 1529 261 423444 5085531 another holothorian R492-23
12 37 1529 261 423444 5085531 another holothorian  
12 37 1530 261 423438 5085531 large pillow lavas  
12 37 1530 256 423429 5085531 lobates w/ some pillow lavas  
12 38 1531 261 423422 5085523 Cool lavas  
12 39 1530 258 423413 5085521 appears to be an older surface underneath, back to solid flow photo 39
12 39 1531 255 423405 5085520 surface R492-24
12 41 1532 258 423408 5084952 more sediment, local pocket, lavas glassy, not a lot of biology  
12 41 1533 254 423377 5085517 Lavas with sediment in cracks photo 40
12 41 1533 264 423344 5085738 surface  
12 42 1532 257 423344 5085738 flatter with more sediment pockets, looking older, holothorian R492-26
12 42 1532 257 423536 5085638 sediment pocket photo 41
12 42 1532 260 423365 5085513 quick look at gauges  
12 43 1532 268 423359 5085508 possible hydrothermal area, a call for stopping the ROV while looking at gauges, so as not to miss hydrothermal activity photo 42
12 44 1533 260 423355 5085508 possible bacterial mat, pockets  
12 44 1533 258 423358 5085498 Little white patches of mat on lavas  
12 44 1533 257 423349 5085504 A vent we've just found! photo 43
12 44 1532 257 423358 5085498 bacterial mat, swimming worm. stop the ship, warm water. R492-29
12 45 1534 244 423343 5085503 vent R492-30
12 45 1534 245 423343 5085503 Vent fish photo 43
12 45 1534 245 423343 5085503 photo of vent fish photo 45
12 45 1534 245 423343 5085503 Bacterial mat and flow R492-31
12 46 1534 245 423341 5085504 fixes good photo 46
12 46 1534 244 423342 5085503 bacterial mat on the edge of pit, warm water and worms R492-32
12 47 1534 247 423338 5085501 40m s of Mkr-113  
12 48 1534 247 423340 5085504 good fix, highlights  
12 48 1534 272 423275 5085430 bag creatures  
12 49 1534 10 423337 5085506 highlights off for repair of joystick  
12 50 1534 36 422850 5084915 surface near the venting area photo
12 51 1534 56 423341 5085504 worm dance  
13 1 1534 54 423346 5085505 still repairing joystick photo 50
13 9 1534 226 423338 5085502 still fixing joystick,  
13 10 1533 204 423343 5085504 video on, joystick fixed, good nav  
13 10 1534 15 423344 5085505 Joystick Vent  
13 10 1533 49 423344 5085505 vent has been named , 'joystick' vent  
13 11 1535 53 423342 5085504 hole with lots of venting. R492-34
13 11 1535 50 423342 5085507 tube worms just below ROPOS, bag creature, scale worms, tube worms  
13 13 1535 47 423338 5085502 vent is similar to those at the north end, lots of flock, temps are about 1.5 degrees too cold. photo 51
13 14 1535 48 423340 5085506 3 degree area, lots of white flock coming out  
13 14 1534 45 423341 5085506 highlights on, going to do a short survey here  
13 15 1535 46 423340 5085509 vent appears to be in new flow  
13 15 1535 48 423341 5085505 looking down into deep pit, looks somewhat like whiteout vent, but not as large particles, lots of water  
13 16 1534 49 423339 5085502 inside vent  
13 17 1532 74 423341 5085508 Joystick Vent  
13 16 1532 90 423337 5085499 trying heading 10 deg east of north to look for photo 53
13 17 1534 92 423341 5085508 worms and hole R492-37
13 18 1533 80 423339 5085508 Joystick Vent  
13 17 1533 74 423341 5085508 roof collapsed into pit, ROPOS is facing NE, line of venting, grayish milky water photo 54
13 18 1533 112 423339 5085508 of bottom R492-38
13 19 1533 141 423336 5085512 Joystick Vent  
13 19 1533 141 423336 5085512 lots of scale worms swimming in the water, flock from a small hole photo 5
13 20 1533 135 423337 5085512 Joystick Vent R492-39
13 20 1533 143 423337 5085512 continuing to follow pit to NE , we are looking to the SE photo 56
13 21 1534 120 423339 5085518 jumbled flow, R49240
13 21 1534 120 423339 5085518 Jumbled flow with bacterial mat near Joystick Vent  
13 22 1531 74 424174 5085502 heading back to the main vent and maybe a little south photo 57
13 23 1530 168 423347 5085523 looks like a little fracture, NE trend, that has collapsed R492-41
13 25 1534 92 423339 5085508 picture of the hole  
13 25 1534 98 423339 5085508 fixes good  
13 25 1534 95 423340 5085504 edge of pit photo 58
13 28 1534 136 423327 5085489 Stirred up floc near Joystick Vent  
13 28 1533 167 423327 5085489 still moving SW, lots of flock venting photo 59
13 29 1535 157 423337 5085495 crab, vent fish, material in water may be stirred up by ROPOS R492-44
13 30 1535 174 423336 5085492 highlights off  
13 30 1534 172 423336 5085492 driving a little SW along the line  
13 32 1531 72 423337 5085486 at the edge of the depression. looking around for anything else  
13 34 1532 133 423339 5085477 venting appears to have run out, not the best fixes at this point.  
13 35 1532 127 423342 5085467 moving a little south and west, then return to joystick vent  
13 36 1534 196 423339 5085463 pillars in lobate flows, some with bacterial mat  
13 37 1533 195 423324 5085455 Top of a pillar  
13 37 1533 197 423324 5085455 photo of top of large pillar, staining on top, possible tube worms, confirmed tube worms.  
13 38 1533 183 423320 5085462 Some sort of worm/mat stuff on top of a new lava pillar R492-45
13 39 1533 170 423322 5085455 view of top of pillar, probably to hard to sample on top of the pillar. decided to wait for a better sample photo 60
13 39 1533 169 423321 5085456 More gunk on top of this pillar R492-46
13 40 1532 189 423321 5085456 pillars conduits for vent fluids since it had tube worms on it  
13 40 1530 185 423321 5085454 SW 5 m of joystick vent R492-47
13 42 1535 355 423308 5085463 may have stop soon due to weather, heading back to pit to attempt a sample  
13 44 1534 18 422832 5085037 large spires near the pit  
13 44 1530 54 422673 5084771 no good fixes now  
13 47 1532 62 423327 5085506 back at the vent area  
13 50 1534 40 423341 5085507 highlight on beta  
13 50 1534 44 423341 5085507 Rock with tube worms at Joystick  
13 50 1534 38 423340 5085507 Rock with tube worms at Joystick Vent  
13 53 1534 45 423338 5085504 decided to suction worm first , into J1 64 micron R492-48
13 55 1535 40 423342 5085507 bag creatures at the joystick vent R492-49
13 56 1535 38 423339 5085505 suction sampling worms  
13 58 1534 34 423271 5085640 suctioning tube worm photo 62
13 59 1535 39 423338 5085505 continuing to suction sample SS-j1_bio _R492-1
14 1 1535 29 423341 5085507 continuing to sample worms and bag creatures  
14 3 1534 15 423337 5085501 ROPOS lifted off, ship is losing heading stop sampling  
14 6 1533 255 423332 5085497 looking for a good place to put the marker  
14 11 1527 92 423332 5085499 still looking around for the vent  
14 14 1531 85 423345 5085515 Located sampling site.  
14 15 1533 326 423342 5085510 sitting on the bottom, deploying the Mkr-42  
14 17 1533 356 423321 5085488 marker 42deployed.  
14 18 1532 360 423344 5085506 good fix at joystick vent , marker 42  
14 19 1532 358 423343 5085506 Mkr-42 at Joystick Vent  
14 20 1532 14 423343 5085505 going back to sample area to continue suction sampling in J1 R492-51
14 23 1534 104 423340 5085508 Sitting at the venting orifice where we got the odd-looking worms (nemerteans?) and getting ready to suction more for fauna.  
14 25 1534 103 423340 5085509 good fix: 3340x 5508y. Suctioning Part Deux. R492-1.  
14 26 1534 97 422935 5085145 More red worms on the rock below where we were suctioning. Trying to get gastropods, but failing, so going in for more of these worms.  
14 37 1534 77 423339 5085503 scanning area, short camera survey R492-52
14 37 1535 68 422621 5084739 Joystick Vent  
14 38 1535 68 423291 5085462 Joystick Vent  
14 38 1534 59 423291 5085462 getting highlights of joystick vent R492-55
14 39 1535 83 423337 5085508 moving up on top to look for a rock sampling area R492-56
14 41 1534 72 423341 5085509 stopping highlights  
14 43 1533 24 423344 5085510 VCR tape change  
14 43 1532 20 423284 5085119 going to attempt a modified rock corer, hand rock corer, ROPOS-core. up on top, near marker  
14 45 1533 25 423344 5085507 picking up yellow core sampler  
14 47 1533 27 423339 5085503 Unused core with wax. Yellow  
14 47 1533 27 423346 5085509 preparing to take core sample, grabbing sampler with 5 function arm, now grabbing with 7 function arm  
14 52 1533 26 423341 5085504 Rock core success! Just went in for a second hit - got even more! Took sample a few meters southwest of marker 42 - heading 030. R49258
14 53 1533 31 423285 5085643 Core sample after collection. Yellow corer Joy Stick Vent Rck_core_

R492-2
14 55 1532 17 423346 5085513 x=3342, y=4405 - good fix for rock core R492-2.  
14 57 1532 23 423344 5085507 Putting rock core in sample basket on front of BioBox. R492-59
14 58 1532 23 422968 5085238 The rock core R492-2 was orange.  
14 58 1532 23 422968 5085238 Going in to suction sample for C. Moyer into jar #6. Note: two of the long, skinny nemertean looking worms got sucked into the flushing jar from the first suction sample (Jar J1, R492-1).  
15 4 1534 51 423278 5085451 Suctioning bag creatures and mat for Moyer into Jar #6.  
15 14 1534 42 423343 5085515 Still suctioning. A few drops of hydraulic fluid in view.  
15 21 1534 35 423233 5085498 Finished suctioning jar #6, moving to jar #8. SS-6_mat_

R492-3
15 23 1534 40 423266 5085838 Positioning to suction the 'fuzzy rocks' into jar #8 for C. Moyer. Stopping for a moment to watch hydraulic fluid leak out of 5-function arm.  
15 31 1533 330 423345 5085508 Starting to suction into Jar #8.  
15 38 1532 91 423325 5085788 Finished suctioning some white fuzzy stuff of the rock; now looking around for another place to suction.  
15 42 1534 125 423131 5085308 Suctioning more bags, mat and worms into bottle #8. SS-8_mat_

R492-4
15 47 1534 114 423338 5085511 Suction sample bottle #8 from Joystick vent (Mkr 42)  
15 56 1534 124 423332 5085508 End of suctioning into Jar #8.  
15 59 1533 149 423354 5085530 Heading back to the cage for tether management. R492-60
16 0 1535 263 423792 5085753 Heading southwest along original transect towards 'Dying Vent'. Lineated sheet flows. Fair amount of sediment in cracks.  
16 2 1535 251 423291 5085408 Jumbled, folded flow now, moving into lineated, ropy sheet flows again.  
16 5 1534 299 423281 5085722 A collapsed area with lobates on the floor. A cool pillar with square windows. A collapsed wall.  
16 7 1533 209 423278 5085481 Wall with Lava Pillar just west of Joystick Vent.  
16 7 1533 210 423278 5085481 Same collapsed area, wall with a lava pillar. Top of the pillar has bacterial mats. 63 photo

64 photo
16 11 1532 259 423275 5085479 Still in collapsed area with pillars and ridges. Floor is littered with collapsed plates and folded sheets. Photo of hole in the top of the pillar. R492-61
16 16 1532 260 423226 5085458 Short pillars with top. 65 photo

66 photo
16 16 1532 258 423226 5085458 Jumbled flow. Looks like short pillows on top of lobates. photo 68

photo 69
16 17 1533 262 423214 5085457 Lobate roof supported by a thin pillar - can see hole in top of pillar. R492-62
16 17 1533 259 423210 5085455 Lobate roof supported by thin pillar. SW(250) of Joystick photo 70
16 18 1532 258 423199 5085452 Ophuroids and fecal trails. Lobates on top of pillar. Holothurian and fecal trails. photo 71
16 19 1532 260 423193 5085451 Jumbled flow and lobates next to each other. R492-63
16 20 1533 259 423178 5085443 Well formed glassy lobates. Looks like a contact. We think we were on old lavas for a while and came onto new lavas. The new flow is probably getting thin in this area. Old lavas with lots of sponges, ophuroids, holothurian. photo 72

photo 73
16 22 1534 268 423162 5085445 Mixture of old and new lavas. Sea fan (gorgonian). Photo of lobate flow.  
16 25 1533 255 423117 5085401 Lobate flow. Sea star and brittle stars. Old flow underneath and new bulbous, glassy flow on top. Photo of contact.  
16 28 1534 256 423083 5085388 Lots of sponges, brittle stars, holothurians on older lobate flows. Sponge city"." Photo 75
16 29 1534 257 423020 5084913 Older flow. Observe sponges (white blobs) on the lava. S. west of Joystick. Photo
16 31 1534 258 423036 5085365 A little bit of bacterial mat in-between lobate flows. Tons of tiny sponges. Photo 77

Photo 78
16 33 1535 258 423039 5085379 Crab and clam site. R492-64
16 32 1533 257 422850 5084756 Tube worms and clams! Stopping to get a suction sample. x=3000, y=5350 approximate location.  
16 47 1536 294 422625 5084986 Suction sampling into bottle #7 for clams and background fauna. R492-65
16 50 1536 290 423015 5085362 x=423016, y=5085362 - good fix for this sample location. Photo 80

Photo 81
16 57 1535 274 422970 5085316 Just suctioned another holothurian into bottle #7. SS7_bio_R492-5
17 2 1536 256 423013 5085361 Clams, tubeworms and collapsed lobate.  
17 5 1535 270 422923 5085293 Clam sampling site, 'Coquille'. Temperature up by 0.2 degrees.  
17 13 1535 286 423011 5085363 Finished suctioning into bottle #7. Going to take a look around this 'Coquille area'. Tube worm tufts and batches of clams in lobate depressions. On old lavas - holoturians too. photo 83
17 16 1536 179 422988 5085342 Large drainout area. Clams in cracks with tube worms. photo 84
17 17 1535 140 422984 5085345 Clams in crack at Coquille vent area. Photo 85

Photo 86
17 17 1535 214 422598 5084950 Tube worm clump Photo 87

Photo 88
17 19 1535 42 422979 5085326 Tube worm clumps. Coquilles Site R492-71
17 18 1535 216 422771 5085104 Coquilles area. R492-72
17 20 1534 46 422733 5085109 More tube worm tufts. R492-73
17 20 1535 72 422733 5085109 Tube worm site. Christian's clam area. Photo 89

Photo 90
17 21 1536 11 422709 5085088 Surveying around Coquilles Vent. Increasing hydrothermal activity at this site - bacteria, shimmering water, clams, snails, tube worm bushes, etc. Photo 93
17 25 1536 8 423043 5085390 Tons of limpets in with the tubeworms. R492-74
17 27 1536 7 422994 5085368 Maia's Sample-Coquille- 350 SW of Joystick.  
17 28 1536 9 422992 5085367 x=2291, y=5365 is new location for Coquille vent area. Maia is about to sample a tube worm bush in this old venting area.  
17 30 1536 23 422587 5085074 Sample collection at Coquille. R492-75
17 30 1536 24 422587 5085074 Sampling tube worm bush. Bio_R492-6
17 32 1536 303 422746 5085115 Tube worm grab into starboard BioBox. R492-77
17 45 1536 0 422903 5085268 Suction sample in the middle of a tube worm bush at Coquille. Into bottle J4.  
17 54 1536 3 422746 5085164 Done with suctioning into J4. Photo 96

Photo 97
17 57 1535 354 422961 5085328 Going around the field to get an idea of the extent of venting - going to the west right now. SS-j4_bio

_R492-7
17 58 1533 120 423026 5085392 Heading southeast towards Dying Vent.  
17 59 1536 140 423026 5085392 Still flying over lobates with TW bushes.  
18 0 1534 137 422978 5085315 Clams, crab, still on old lava.  
18 2 1535 149 422997 5085311 Crab photo Photo 98

Photo 99
18 4 1535 149 422492 5084940 Contact of old and new lavas.  
18 5 1534 149 423019 5085328 good fix for the contact. Billowy, tubular new flow and older, flatter flow. Photo 10
18 7 1535 139 423022 5085323 Old and new lava jumbled together.  
18 8 1536 140 423007 5085301 Contact photo. Photo 101
18 9 1534 116 423049 5085356 New lobate lavas. Photo 102
18 15 1534 113 423050 5085293 Still on new lavas - lobate flow. Some holothurians and sediment in the cracks. Photo 103
18 18 1534 130 423070 5085283 New tubular lobes. Photo 104
18 21 1532 119 423064 5085270 Sulfide staining in cracks. Lots on sponges. In a collapsed structure.  
18 23 1532 116 423084 5085267 Lavas with some staining. Photo 105
18 24 1532 120 423080 5085320 Jumbled sheets, collapsed area, lava pillars with arches.  
18 30 1534 110 423106 5085304 Sponges found on lava flow. Near dying vent where new and old ? Photo 106
18 31 1534 95 423299 5085477 New and old flow/Old with sponges. Near Dying Vent. Photo 107
18 28 1533 79 423091 5085280 Contact again. Old lavas covered with sponges and new lobate flows. Settling down to get a couple rock samples of new and old lava. R49278
18 32 1534 78 423097 5085292 Trying to sample lava with 7-function claw. Lava seems too friable? to pick up with claw. Got a piece of the new lava flow - put into the starboard BioBox. Fix is 3080, 5277. R492-79
18 42 1534 57 423094 5085289 Taking a rock core (black corer) of the old flow at the same contact point. The core is contaminated, so the sample should come from the rope side of the corer (no contamination on upper half). Photo 108

Photo 109
18 44 1534 55 423072 5085267 Black core sampler/Rope side before sampling Rck_R492-8
18 47 1534 52 422429 5084639 Forget the above contamination comment - ROPOS guys managed to swipe off the contamination (rock flecks from somewhere unknown). good fix, 3076,5272. Going in for the rock core. Rck_core_

R492-9

Photo 10
18 50 1534 54 423096 5085291 Black corer after cleaning. R492-80
18 51 1534 76 423078 5085273 Another good fix for contact/rock core location: 3093, 5284.  
18 57 1535 77 423093 5085282 Sample rck_R492-9 is in the purse". Got a good bunch of glass." R492-81
19 4 1534 111 423075 5085264 Continuing traverse in SE direction at 0.5 kt.  
19 6 1533 121 423088 5085243 Stopped while ship changes its hdg so as not to back over the cage's cable.  
19 11 1532 123 423120 5085265 good fix, says Maia.  
19 17 1533 129 423106 5085258 Ship hdging changed and now continuing along track.  
19 19 1533 133 422824 5085068 Accumulation of yellow sediment in collapsed pit. Photo 111-112
19 20 1534 115 423105 5085233 Pillar holding up lava roof.  
19 21 1534 104 422388 5085546 Lobate flow with sediment around base.  
19 22 1532 109 423152 5085255 Good fix. R492-82
19 22 1534 116 423159 5085256 good fix. Photo 113
19 23 1537 110 423170 5085254 Jumbled sheet flow at bottom of ~4 m drainout depression.  
19 24 1534 109 422930 5085065 bathtub rings on edge of drainout area  
19 24 1534 112 422930 5085065 bathtub rings on side of lava drainout. Photo 14
19 26 1533 103 423200 5085233 Increasing amount of particulates in water column. R492-83
19 28 1534 100 423213 5085229 Crab on top of spire at edge of drainout. Photo 115

Photo 116
19 28 1533 108 422833 5084944 Very deep drainout (4m).  
19 29 1537 107 423874 5085578 Bottom of 4m deep drainout. Photo 117
19 30 1535 111 423253 5085231 thin spire at bottom of 4m lava lake  
19 30 1535 105 423253 5085231 Tall thin lava spire. Photo 118
19 31 1534 122 422874 5084938 Edge of drainout. R492-85
19 32 1534 128 423273 5085229 good fix. Some bacterial mat. Cloudy. Must be near a vent. Photo 119
19 33 1535 122 423507 5085304 spire with mat on it Photo 120
19 33 1535 122 423507 5085304 Bacterial mat on side of drainout. Photo 121
19 34 1535 80 423277 5085216 close-up on white stuff R492-86
19 34 1536 76 423274 5085212 Edge of drainout. Photo 122

Photo 123
19 35 1535 74 422937 5085160 limpets on top of pillar R492-87
19 37 1534 191 423198 5085121 chunks and tube worms Photo 124
19 37 1534 194 423198 5085121 weak venting and animals. R492-88
19 38 1534 162 423274 5085205 good fix: 3274, 5205. Looking around this new vent. Some reddish floc. R492-89
19 41 1533 211 423284 5085214 big clump of tube worms at Bag City Photo 126
19 41 1533 209 423284 5085214 Good fix: 3284, 5214. Photo 128
19 46 1535 220 423267 5085201 Deployed Mkr 36 at Bag City Vent R492-90
19 48 1535 206 423265 5085200 Tube worm grab at Bag City vent into port BioBox. Difficulty getting them all in!  
19 54 1535 206 423281 5085209 good fix. Still stuffing worms.  
19 59 1535 213 423279 5085208 Beta highlights video changed at 19:52. Vereena's video changed at 19:55. Still stuffing worms. Bio_R492-10
20 7 1535 216 423279 5085208 At last, the worms are stuffed. Removing some that are sticking out so as not to obscure the color video.  
20 12 1535 211 423281 5085208 Taking gas tight bottle sample at Bag City Vent where tube worms were just sampled. gtb_dfl_R492-11
20 20 1535 221 423438 5085215 suction sample about the same spot as gtb 2  
20 16 1535 214 423281 5085208 Suction sample of vent fluid in jar J3 in same clump of tube worms that were sampled here at Bag City. Maximum temperature (yes, we now have this capability) is 2C. Stopped sampling when intake and outlet were same temperature. SS-j3_dfl

_R492-12
20 25 1535 222 423401 5085180 sort of a focused flow R492-91
20 23 1535 222 423470 5085250 Nice view of tube worm bunch from where we just sampled. Finished with the fluid sample in J3, now we are going to look around for some iron oxides to sample.  
  20 29 1536 179 423654 5085452 Trying to suction sample red oxides into bottle #4 (flushing jar); can't really reach it, just got a little bit - going to try another spot. R492-92
20 37 1530 327 423404 5085215 Looking around 'Bag City' - there don't seem to be any more red oxide patches around. Time out to do some tether management - going back to the cage. SS-j4_FeO

_R492-13
20 41 1520 107 423002 5085030 Going back to the bottom to continue our track heading southeast across new lavas.  
20 42 1535 114 423010 5085066 Back to bottom to continue SE along traverse.  
20 46 1534 127 423367 5085182 Contact between two lobate flows. Both appear to be old.  
20 47 1536 118 423369 5085194 Lobate flow.  
20 48 1536 116 423065 5084862 Pillows.  
20 49 1536 112 423316 5085163 Pillow. Photo 131
20 56 1534 117 423464 5085170 No fixes but ship has moved ~20 m SE of Bag City.  
20 57 1536 120 423258 5084999 New (1998) lava. R492-93
20 57 1536 122 423394 5084736 Pillowed 1998 lava. No fixes.  
20 59 1535 134 423478 5085123 On 1998 lava but can still see windows of old lava as we proceed SE. R492-94
21 1 1537 118 423470 5085226 Definitely on older lava. (Bill says intermediate age) Photo 132
21 8 1539 111 424592 5085054 Sampled lava rubble. (intermediate age) x=423281 y=5085209  
21 9 1539 102 424592 5085054 Rubbley basalt. Old flow?  
21 15 1539 328 423693 5085125 Lost sample out of the 7-function claw. Couldn't put into BioBox for fear of losing of worms out of the left compartment and confusion with sample already in the right compartment. Doing a wax stab instead. Purple sampler, put in Perfit's purse. Rck_core

_R492-14 Photo 13

21 37 1514 154 422978 5084462 ROPOS returning to cage for recovery.  
21 38 1490 171 422978 5084462 ROPOS's cage.  
21 45 1373 131 423087 5084932 Winching cage to surface with ROPOS outside to give Craig some driving experience. R492-95
22 24 405 289 423645 5085308 2324 GMT ROPOS on deck R492-100
22 24 405 289 423645 5085308 Dive Summary: Dive R492 was a geology reconnaissance dive of the '98 lava flow on the SRZ, south of the area surveyed in '98. The eastern and western limits of the '98 flow were surveyed, and several targets were added to aid in improving the lava flow  
       outline. Biological and suction samples were taken, as well as many rock samples. A large ventfield was discovered on the east side of the '98 flow in older lava. The vent was named Coquille. Dying Vent was not seen, but Bag City Vent was discovered.