Dive R501 | |||||||
Dive Plan: "Geobiodive" to finish mapping and sampling the contacts of the 1998 lava deploy the time lapse camera at Mkr-33 and biological suction samples at Mkr-33 and a bag site." | |||||||
Note: Nav fixes not edited in the logs. All fixes were logged, regardless of accuracy. Use the dive plots to determine actual positions. No acoustic nav logged until ROPOS went down second time at JD192 0521. Have nav for rest of dive. | |||||||
UTC Hour | Min | Depth (m) | Sub Hdng (deg) | UTM X | UTM Y | Comments | Frmgrbs, Photos, Samples |
21 | 37 | 0 | 17 | 423660 | 5086399 | ROPOS in water. | |
22 | 51 | 1522 | 143 | 423791 | 5087129 | ROPOS on the bottom. | |
22 | 53 | 1521 | 172 | 423810 | 5087146 | At Mkr-33 looking for place to deploy the time lapse camera. | |
23 | 2 | 1523 | 206 | 423844 | 5087107 | Camera placed on seafloor. Will be moved into place. | |
23 | 9 | 1521 | 238 | 423839 | 5087128 | Photo of time lapse camera in position. | Photo 1 |
23 | 10 | 1521 | 345 | 423839 | 5087128 | TL camera looking from south | R501-1 |
23 | 10 | 1521 | 350 | 423839 | 5087128 | Side view of time lapse camera. | R50-14 |
23 | 11 | 1520 | 348 | 423840 | 5087125 | Frame grab looking from the south, marker 3 in background | R501-5 |
23 | 11 | 1522 | 331 | 423840 | 5087121 | Side view of camera. | R501-6 |
23 | 12 | 1522 | 78 | 423840 | 5087121 | looking at TL camera from west to east | R501-7 |
23 | 12 | 1522 | 69 | 423837 | 5087118 | Head-on view of camera. | R501-8 |
23 | 13 | 1519 | 251 | 423841 | 5087131 | Looking at TL camera from NE to SW | R501-9 |
23 | 13 | 1519 | 247 | 423841 | 5087131 | Back view of camera. | Photo 2 |
23 | 14 | 1521 | 243 | 423844 | 5087124 | TL camera looking SW | R501 10 |
23 | 14 | 1521 | 244 | 423844 | 5087124 | Backside view of camera. | Photo 3 -4 |
23 | 15 | 1522 | 266 | 423844 | 5087124 | Back quarter view of camera. | Photo 5 |
23 | 15 | 1522 | 321 | 423844 | 5087124 | TL camera looking to NW (Camera is looking West) | R501-11 |
23 | 16 | 1523 | 328 | 423837 | 5087128 | Side view of camera. | Photo 7 - 9 |
23 | 18 | 1520 | 247 | 423844 | 5087123 | TL camera - ROPOS is looking to SW | R501-12 |
23 | 19 | 1520 | 237 | 423844 | 5087123 | TL camera - ROPOS looking to SW | R501-13 |
23 | 20 | 1521 | 245 | 423844 | 5087127 | Another one | R501-14 |
23 | 27 | 1522 | 293 | 423841 | 5087131 | side view of time lapse camera in position at Mkr-33 | R501-15 |
23 | 28 | 1523 | 295 | 423841 | 5087131 | close-up of time lapse camera in position | R501-16 |
23 | 36 | 1524 | 358 | 423836 | 5087138 | Picked up suction sampler with 5 function. | |
23 | 39 | 1523 | 348 | 423844 | 5087107 | Suction sample in jar 1 of bacterial mats at Mkr-33. | SS-j1_mat _R501-1 |
23 | 47 | 1521 | 338 | 423846 | 5087110 | Looking at site to possibly reposition camera | |
23 | 51 | 1518 | 199 | 423984 | 5086851 | Decided to move camera back ~15 cm. | |
23 | 56 | 1523 | 236 | 423846 | 5087105 | ROPOS positioning Time Lapse Camera | R501-17 |
23 | 56 | 1523 | 232 | 423846 | 5087105 | Camera moved 15-20 cm back from its original position. | |
23 | 57 | 1522 | 233 | 423753 | 5087352 | Area to south of camera | R501-18 |
23 | 58 | 1522 | 242 | 423845 | 5087111 | Area being viewed by Time Lapse Camera | R501-19 |
23 | 58 | 1522 | 249 | 423845 | 5087111 | Backside view of new camera position. | Photo 10 - 11 |
23 | 59 | 1522 | 328 | 423845 | 5087108 | What camera is looking at | R50120 |
23 | 59 | 1522 | 330 | 423845 | 5087108 | Side view of timer lapse camera. | Photo 12 |
0 | 0 | 1521 | 291 | 423844 | 5087107 | Mkr-33 vent. | Photo 13 |
0 | 1 | 1523 | 264 | 423844 | 5087115 | What NeMO camera would look at | R501-21 |
0 | 3 | 1522 | 215 | 423847 | 5087114 | Video survey along crack on heading 215. | |
0 | 4 | 1521 | 211 | 423845 | 5087118 | What NeMO Camera would look at | R501-22 |
0 | 4 | 1520 | 216 | 423845 | 5087118 | End if video survey. | |
0 | 8 | 1498 | 270 | 423845 | 5087118 | Traveling 165m on course 213 to south of Mkr-33 to begin geological traverses over new lava. Target name is Geotran"." | |
1 | 20 | 1502 | 221 | 422463 | 5085383 | Have arrived at beginning of geotransect, 560m SW of Mkr-113. | |
1 | 22 | 1520 | 59 | 422893 | 5085729 | Descending to seafloor, going to West of contact and going to drive East across it. stay tuned. | |
1 | 23 | 1527 | 98 | 422893 | 5085729 | At bottom. Se sediment in pockets around lavas - Bob says old stuff. | |
1 | 24 | 1532 | 91 | 422907 | 5085745 | Smaller lobate flows look quite black. Lots of sediment. Older flow-old or intermediate? | Photo-14 |
1 | 27 | 1531 | 87 | 422891 | 5085740 | Large pillows up at the slope. Moving the ship along this transect due East to look for contacts. | |
1 | 29 | 1528 | 93 | 422911 | 5085734 | Starfish in photo. | Photo 15 - 16 |
1 | 30 | 1529 | 92 | 422917 | 5085741 | Holothurian, ophiuroids on lava. | |
1 | 31 | 1528 | 87 | 422911 | 5085746 | good fix. Rattail. | |
1 | 32 | 1531 | 85 | 422917 | 5085734 | good fixes. Older than intermediate says Bill. Quite a bit of sediment, says Bob. Crab. | |
1 | 33 | 1534 | 89 | 422930 | 5085720 | Some sponges, lots of ophiuroids, brown sediment, anemone. Trying to get close-ups of surface to see how old the lavas are. | |
1 | 34 | 1534 | 98 | 422949 | 5085688 | Lots of holothurians. | |
1 | 35 | 1535 | 94 | 422956 | 5085680 | Definite brownish tint on the surface of the larger pillow lavas, although it looks really glassy. Surprising! "Key is to look closely at the lava" - Bob. | |
1 | 36 | 1534 | 94 | 422966 | 5085689 | good fix. | |
1 | 37 | 1534 | 94 | 422974 | 5085695 | Lavas look glassy from a distance, but when zoom in, they do look quite old. Large anemone. | Photo-17 |
1 | 38 | 1534 | 98 | 422980 | 5085699 | Another anemone. Holothurians. Lots of ophiuroids. | Photo-18 |
1 | 39 | 1534 | 93 | 423001 | 5085708 | Empty tubeworm tube. Ophiuroids. Grayer members of the same lava flow. Rattail. Large pillow lavas. | Photo-19 |
1 | 41 | 1532 | 99 | 423011 | 5085715 | Mike Perfit likes the look of the rocks too. Its a geo love fest! Still on old lavas. | |
1 | 42 | 1531 | 100 | 423029 | 5085716 | Anemone, Bob thinks this is the same flow, although there is some discussion that this might be a contact. Anemone again. Bob thinks this is the same flow still. Starfish. | |
1 | 43 | 1532 | 116 | 423033 | 5085700 | As get in close, can see more sediment, little sponges, holos, ophiuroids and they don't look as young as they do from far away. | |
1 | 44 | 1532 | 114 | 423047 | 5085696 | good fix. Tube-like animal sticking out from under lavas. Lots of ophiuroids and holos. Little sponges. | |
1 | 47 | 1531 | 112 | 423083 | 5085701 | Come up about 6 or 7 meters since we've been driving. good fixes. Lava looks glassy, but still older flow. | |
1 | 49 | 1531 | 109 | 423102 | 5085703 | Continuing East, lavas are becoming more lobate-now back into more pillows, but not seeing the larger ones anymore. | Photo-20 |
1 | 49 | 1530 | 113 | 423112 | 5085704 | good fixes here. Holos, sediment pockets. | |
1 | 50 | 1529 | 113 | 423122 | 5085704 | Aren't as many sponges and ophiuroids, at contact. | |
1 | 51 | 1529 | 115 | 423128 | 5085707 | good fix. P-code is going down. At contact. Stopping the ship. Zooming in. | Photo 21 - 22 |
1 | 52 | 1530 | 116 | 423143 | 5085705 | Contact-the younger lava of the two. | R501-23 |
1 | 53 | 1530 | 114 | 423142 | 5085705 | Does look like younger lava, but there are some ophiuroids, a couple of holothurians and some sediment. Ship is stopped. | |
1 | 54 | 1530 | 106 | 422720 | 5085324 | Looks like a very similar type of flow as we've been traversing, but don't have as much sessile fauna on them. | |
1 | 55 | 1530 | 86 | 422721 | 5085323 | We're going to take a piece of rock. Taking the younger rock of the contact. | |
1 | 59 | 1530 | 46 | 423141 | 5085704 | Very glassy rock under surface-can't get a grab. Going to take a suction sample instead. | |
2 | 9 | 1530 | 63 | 423142 | 5085704 | Having trouble with the suction sampling-its stuck. | |
2 | 15 | 1530 | 61 | 423142 | 5085708 | Suction sampler jammed and two lights are out. | |
2 | 22 | 1530 | 65 | 423143 | 5085709 | Sub coming back up. Light on camera is out. Quick turnaround and then back down again. | |
3 | 8 | 204 | 7 | 422440 | 5086972 | Notice: We will not change the dive number, even though ROPOS will come to the surface for repairs. I've been informed that the dive number only changes when we do pre-dives and post-dive procedures | |
3 | 10 | 146 | 23 | 422440 | 5086972 | ROPOS is back on deck to fix the suction sampler and replace the lights. | |
3 | 54 | 2 | 145 | 422440 | 5086972 | ROPOS back in the water. Going down to Contact W10 to continue dive. | |
3 | 54 | 2 | 145 | 422440 | 5086972 | CORRECTION: ROPOS BACK IN THE WATER AT 0413. | |
5 | 1 | 1253 | 250 | 423058 | 5085723 | Continuation of Dive R501. Fixed the connector to the camera light and pulled a large piece of whole rock out of the suction sampler carousel that was jamming the rotating mechanism. Have acoustic nav from this point till end of dive. | |
5 | 21 | 1531 | 274 | 423103 | 5085725 | On the bottom. Looks like older with many sessile organisms. Many brittle stars. wandering around a bit to find a broken piece to sample. Could be 50 m west of contact with Age 2 pillows. | |
5 | 25 | 1533 | 16 | 423048 | 5085709 | prospective samples | R501-26 |
5 | 26 | 1534 | 22 | 423074 | 5085738 | 3050 5709 was a good fix | |
5 | 25 | 1533 | 17 | 423048 | 5085709 | good fix. Trying to get a sample on large pillow. 3050 5709. Surface looks older. | Photo 23 |
5 | 28 | 1533 | 30 | 423048 | 5085711 | really glassy | R501-27 |
5 | 29 | 1533 | 31 | 423047 | 5085709 | Taking pillow sample. sample 2 | R501-29 |
5 | 31 | 1533 | 18 | 423047 | 5085714 | Can't pick up glassy top of pillow so going to slurp glass into Jar J3. | SS-j3_rck
_R501-2 |
5 | 38 | 1533 | 348 | 423047 | 5085709 | resorting to suction sampler | R501-30 |
5 | 42 | 1533 | 348 | 423045 | 5085709 | Finished taking sample 2 of old (age 3?) top of pillow lava. | |
5 | 44 | 1533 | 84 | 422351 | 5087104 | Many dense small stalked organisms on lava surfaces | Photo 23 |
5 | 47 | 1533 | 70 | 421936 | 5085735 | surface of intermediate flow | R501-31 |
5 | 47 | 1533 | 70 | 421936 | 5085735 | Fairly extensive sponges and sediment pockets. Holothurians, lavas getting more lobate in form. | |
5 | 48 | 1532 | 101 | 423065 | 5085727 | Heading east. Anemone in older lavas. | Photo 26 |
5 | 49 | 1532 | 62 | 423360 | 5085449 | Crab and fish. still in old lavas | |
5 | 52 | 1531 | 114 | 423112 | 5085734 | contact between new lava and old(er) | R501-33 |
5 | 51 | 1531 | 108 | 423112 | 5085734 | Big sponges and now at contact with large well formed pillows, Well formed pillows and large tubes. Quite glassy with few sessile organisms. A little less sed. | Photos 28-29 |
5 | 56 | 1530 | 122 | 422711 | 5085334 | Close up of surface of larger pillow. | Photo 30 |
6 | 0 | 1531 | 91 | 423127 | 5085716 | Trying to grab a sample of small tube, toe in lobates but not having much luck. Going for the suck. | |
6 | 2 | 1531 | 99 | 423185 | 5085742 | Going to sample in Jar #7. | SS-j7_rck
_R501-3 |
6 | 6 | 1531 | 106 | 422626 | 5085255 | Finished sampling slurp 7. Younger of two flows at contact. Age 2 flows. | |
6 | 10 | 1528 | 92 | 423136 | 5085713 | Heading east again. Glassy nature of lobes, not much life a few holothurians, not to many brittle stars. they appear to be smaller in size. Not much sed in pockets either | Photo 32 - 33 |
6 | 11 | 1529 | 86 | 423258 | 5085964 | Inter-pillow sediments | R501-34 |
6 | 12 | 1530 | 122 | 423149 | 5085720 | Of surface of the large younger pillow. | Photo 35 |
6 | 15 | 1530 | 194 | 423152 | 5085709 | Continuing east. Small amounts of Fe sed between lobes and pillows. Quite a few holothurians. Still some large pillows. Area has been flat over a long distance. Some very glassy tubes coming from the pillow bottoms. | Photo 36 |
6 | 19 | 1532 | 124 | 423157 | 5085652 | Contact with jumbled flow that has alot of sponges, possible kipuka. | |
6 | 20 | 1531 | 69 | 423178 | 5085656 | Going over a collapse zone with bathtub rings on walls. to the east. along the collapse are lobates that could be the younger lobates | Ph-39 |
6 | 25 | 1532 | 336 | 423200 | 5085668 | Archway with new lavas a top older flow | R501-35 |
6 | 25 | 1532 | 9 | 423200 | 5085668 | Younger truncated lavas overlying the collapse structure. | Pictures 40-43 |
6 | 26 | 1532 | 6 | 423202 | 5085670 | contact of younger on older collapse | R501-36 |
6 | 26 | 1532 | 6 | 423202 | 5085670 | Surface contact | R501-37 |
6 | 26 | 1532 | 354 | 423200 | 5085669 | another | R501-38 |
6 | 27 | 1531 | 336 | 423200 | 5085670 | drip | R501-41 |
6 | 27 | 1530 | 257 | 423308 | 5085147 | Drip structure into the collapse. | Photo 45 |
6 | 28 | 1529 | 265 | 422062 | 5085241 | ||
6 | 33 | 1531 | 98 | 423270 | 5085708 | Taking a sample near the collapse in some broken up lobes. It is unclear if this is underlying older or the same age as the last sample (3). We don't appear to be in the collapse pit now but it is very broken up. | Rck_R501-4 |
6 | 35 | 1532 | 112 | 423237 | 5085669 | sample #4, lava chunk | R501-42 |
6 | 35 | 1532 | 114 | 423237 | 5085669 | Sample 4 | R501-43 |
6 | 36 | 1532 | 114 | 423237 | 5085668 | Putting the sample 4 on the proceed BioBox. Far back left division. Blocky sample with good layer of glass and a layer below it. | |
6 | 39 | 1529 | 258 | 423236 | 5085668 | After sampling we are heading east again. Collapse area again to the NE. Driving east in younger lavas. A bit more sediment but not much sessile life on lobates | Photo 46. |
6 | 41 | 1531 | 102 | 422721 | 5085172 | More broken up pillows, appears to be same unit that sample 3 and 4 were in. Looks like an older flow kipuka now. | |
6 | 42 | 1531 | 96 | 423259 | 5085677 | Back into age 2 lavas. Flow must be fairly thin. Mixture of pillows and small glassy tubes and lobes. Some flatter lobes to. | |
6 | 45 | 1529 | 100 | 423326 | 5085682 | Waiting for the ship. Appears to be more sed. between lobes - possibly some hydrothermal sed. | |
6 | 48 | 1530 | 106 | 423335 | 5085678 | Small scale venting activity due to telltale staining on lava flow | R501-44 |
6 | 48 | 1531 | 103 | 423335 | 5085678 | Some hydrothermal (FE) staining on lower portions of lobes. | |
6 | 51 | 1530 | 102 | 423345 | 5085673 | Same flow but glass on surface looks more broken up, more glass in sediment pockets. More yellowish hydrothermal sed between pillows. We are on the joystick line. | Photo 48-51 |
6 | 55 | 1529 | 97 | 423366 | 5085682 | Venting must be going on. lots of Fe between lobes. Same line as Joystick. | Photo 52 |
6 | 58 | 1530 | 101 | 423395 | 5085682 | Getting out of hydrothermal area. Surface is like age 2 again but there are some older sponge covered pillows sticking up. | |
6 | 59 | 1530 | 102 | 423411 | 5085681 | Stopping to get sample of age 2? or is it '98 flow? Hard to tell | Rck_R501-5 |
7 | 3 | 1530 | 118 | 423241 | 5086138 | sample #5, port front geobox | R501-45 |
7 | 2 | 1530 | 117 | 423411 | 5085680 | Sample from a crust of a hollowed out lobe. Sort of stubby with thin glass, angular edges x=3411 y=5680 position. Went into the front port BioBox. | |
7 | 4 | 1530 | 93 | 423238 | 5086148 | ||
7 | 4 | 1530 | 93 | 423238 | 5086148 | Location of sample 5 | R501-46 |
7 | 6 | 1530 | 91 | 423232 | 5086164 | Heading east after sampling. | |
7 | 7 | 1529 | 93 | 423234 | 5086163 | Still looks like age 2 lavas. No colonization, but light dusting of sed. Not much sed in pockets. Mostly small lobes, not many pillows. | |
7 | 12 | 1527 | 91 | 423432 | 5085680 | This is a good fix. Hanging out waiting for ship to move east. | |
7 | 15 | 1529 | 95 | 423433 | 5085678 | Believe we are still in age 2 lavas with no sessile organisms and light sed cover. Uniformly flat lobates with some shallow collapse, some hydrothermal staining. | |
7 | 17 | 1528 | 97 | 422914 | 5085159 | Some bio. Bacterial Mat on cracks in lobates. More iron staining and sed in cracks. but rapidly getting out of zone of microbial mats. Some yellow staining or sed on lobes. | |
7 | 19 | 1528 | 96 | 423474 | 5085687 | Deep collapse area with plume emanating from the edge. | |
7 | 20 | 1529 | 344 | 423474 | 5085687 | area of collapse with slight venting under it. | R501-47 |
7 | 20 | 1528 | 341 | 423475 | 5085683 | Edge of collapse .bacterial mat | R50148 |
7 | 20 | 1528 | 90 | 422929 | 5085152 | On edge of collapse. can se sheet flows on base of collapse. Lineated sheets trending SW. | |
7 | 23 | 1530 | 86 | 422980 | 5085846 | Stopping to get sample from eastern edge of collapse in lineated sheet flows. Moderate sed. cover. Sample 6. | Photo 56 |
7 | 26 | 1530 | 88 | 423491 | 5085695 | Suction sample of glass from sheet flow | R501-49 |
7 | 23 | 1530 | 85 | 423493 | 5085695 | good fix. Taking a suction sample in jar #8. Sheets in bottom of collapse looks age 2. | |
7 | 27 | 1530 | 89 | 423493 | 5085694 | Sucking lots of sheet flow glass | SS-j8_rck
_R501-6 |
7 | 31 | 1530 | 82 | 423492 | 5085695 | good fix | |
7 | 32 | 1530 | 83 | 423492 | 5085695 | Niskin sample | |
7 | 34 | 1529 | 80 | 423491 | 5085695 | aborted niskin | |
7 | 36 | 1528 | 92 | 423503 | 5085699 | collapse area, pillars | |
7 | 39 | 1528 | 95 | 423524 | 5085680 | lobate flows, seds more evenly distributed due to larger flat areas | |
7 | 40 | 1528 | 93 | 423534 | 5085680 | lobate flows | photo 57 |
7 | 42 | 1528 | 96 | 423550 | 5085680 | collapse area, pillars | |
7 | 43 | 1529 | 86 | 423557 | 5085679 | SE-NW trending collapse area, sheet flows in bottom | |
7 | 45 | 1531 | 93 | 423579 | 5085680 | good fix, sheet flows, jumbled lava at edge of collapse | |
7 | 47 | 1529 | 99 | 423591 | 5085680 | In collapse area, jumbled lava in bottom, broken lava toes/tubes, still interim age lava | |
7 | 49 | 1529 | 96 | 423614 | 5085683 | small sponges on jumbled lava surface | |
7 | 51 | 1529 | 94 | 423628 | 5085684 | good fix | |
7 | 54 | 1529 | 100 | 423655 | 5085682 | back out to small section of roof, then back into ropy floor of shallow collapse | |
7 | 57 | 1530 | 92 | 423687 | 5085680 | good fix, collapse area, jumbled lavas | |
8 | 4 | 1530 | 93 | 423752 | 5085670 | Continuing in very jumbled and chaotic sheets, a bit of hydrothermal sed. in pockets. Should be nearing the new flow contact. Could be a edge of collapse zone. | |
8 | 5 | 1529 | 93 | 423774 | 5085668 | Jumbled up flow with hydrothermal sediment. Now we're back into the regular jumbled folded up crust. | Photo-58 |
8 | 7 | 1529 | 98 | 423797 | 5085666 | Still in the collapsed area filed with jumbled lava. | |
8 | 10 | 1529 | 97 | 423830 | 5085666 | Murky water in the sit camera. | |
8 | 11 | 1529 | 92 | 423834 | 5085666 | Some ropy lavas mixed in with the jumble. | |
8 | 11 | 1530 | 91 | 423839 | 5085667 | Looks like a bit of a drop of here- the sheet is tilted down. | |
8 | 12 | 1530 | 96 | 423842 | 5085667 | More flat sheet surface. | |
8 | 12 | 1530 | 92 | 423846 | 5085668 | More lineated lava. 3847 5668 | |
8 | 14 | 1529 | 91 | 423862 | 5085667 | We're stopping the ship to take a sample. | |
8 | 14 | 1530 | 88 | 423862 | 5085667 | Slabs of lava where we're going to sample. | Photo-59 |
8 | 15 | 1531 | 100 | 423864 | 5085667 | Slab of rock | Rck_R501-7 |
8 | 15 | 1531 | 101 | 423869 | 5085666 | We're at the edge of a shallow collapse-a jumbled broken up area- trying to get the sample. | |
8 | 16 | 1530 | 100 | 422776 | 5084539 | 3865 5668 good fix for this sample. | Photo-60 |
8 | 17 | 1531 | 100 | 423865 | 5085668 | Chunk of rock from collapse | R501-50 |
8 | 17 | 1531 | 99 | 423865 | 5085668 | Placed sample in starboard BioBox. Slaby piece of sheet flow with glass on the top- longer than it is wide or thick. | |
8 | 19 | 1528 | 88 | 423864 | 5085667 | Continuing east. Lobates on top of jumbled sheet flow. Light sediment cover. No sessile fauna living here. | |
8 | 21 | 1530 | 88 | 423877 | 5085670 | Lineated, folded, a few curtains. | |
8 | 21 | 1529 | 96 | 424086 | 5086092 | Lots of collapse around pillars, a few lobates stuck out on top of it. | |
8 | 23 | 1529 | 102 | 423904 | 5085672 | Out of the collapse area, into some continuous roofs and lobates. | |
8 | 24 | 1528 | 94 | 423910 | 5085668 | Large deep skylight. | |
8 | 25 | 1529 | 91 | 423917 | 5085667 | Extensive field of lobates. Looks very solid. | |
8 | 26 | 1529 | 94 | 423928 | 5085664 | Shallow collapse with lobates. | |
8 | 28 | 1529 | 94 | 423937 | 5085660 | Ropy textures on the surface, drop down where big pieces have fallen down the little pieces. More sediment down in the collapse. | |
8 | 29 | 1529 | 84 | 423749 | 5085626 | Big pillars, slabs. | |
8 | 30 | 1529 | 96 | 424329 | 5086033 | More lobates. Strobe didn't work on picture. | Photo-61 |
8 | 31 | 1529 | 96 | 425196 | 5085578 | Deep collapse area with lobates on the top | Photo-62 |
8 | 32 | 1529 | 94 | 423968 | 5085661 | Fair amount of sediment on top of collapsed and jumbled pieces on the bottom. | |
8 | 33 | 1529 | 97 | 423964 | 5085658 | Looks like we've found some contact. Black stuff over lightly sedimented lobes. | |
8 | 33 | 1529 | 98 | 423973 | 5085662 | Contact new lava. lightly sedimented lobes | R501-51 |
8 | 34 | 1529 | 92 | 423995 | 5085660 | Stopping the ship to take a sample. Last 5 strobes on the camera didn't work. | Photo 63 - 65 |
8 | 35 | 1529 | 104 | 423993 | 5085661 | Dark, reflective, hydrothermal sediment on these new "lavas." | |
8 | 36 | 1529 | 136 | 424323 | 5086076 | Some brittle stars on this new "flow." | |
8 | 37 | 1529 | 128 | 424323 | 5086076 | We're going to look around a little bit more before sampling to make sure this really is contact - Bill is not convinced. | |
8 | 39 | 1529 | 94 | 423992 | 5085652 | Having difficulty figuring out what this really is. Sediments in cracks of lobates, few organisms. | |
8 | 41 | 1529 | 90 | 424054 | 5085932 | Going to drive 50 m to the west then driving back this direction to se if we can find the supposed contact. | |
8 | 41 | 1529 | 352 | 423998 | 5085660 | White staining on some exploded lobe. | |
8 | 42 | 1528 | 274 | 423995 | 5085662 | Back into collapsed areas again. | |
8 | 43 | 1529 | 278 | 423995 | 5085662 | Turning back east again, heading a little bit north so we don't go over the exact same stuff. | |
8 | 44 | 1529 | 88 | 424147 | 5086082 | Light dusting of sediment. | |
8 | 45 | 1528 | 93 | 423995 | 5085667 | Not really striking new flow. A little bit glassier. Heading east, a collapse with lots of sediment on the fallen blocks. | |
8 | 45 | 1529 | 84 | 424000 | 5085670 | The batteries are dead in the camera again. | |
8 | 46 | 1529 | 83 | 423214 | 5084939 | Computer lock up. | |
8 | 47 | 1529 | 83 | 424014 | 5085670 | We're coming up of the bottom to try to reboot. | |
8 | 51 | 1484 | 252 | 423995 | 5085654 | Going back down now. | |
8 | 53 | 1461 | 316 | 423998 | 5085653 | We're going back up to the cage now, not the bottom. | |
8 | 54 | 1451 | 336 | 423069 | 5085182 | Going back down to 150. | |
9 | 2 | 1504 | 59 | 423024 | 5084699 | Doing some tether management. | |
9 | 3 | 1527 | 140 | 423024 | 5084699 | Going back to the bottom again. | |
9 | 4 | 1528 | 103 | 423024 | 5084699 | Well formed lobates, sediments in the pockets. | |
9 | 4 | 1529 | 99 | 423974 | 5085644 | 3974 5645 Pretty glassy, with sediment. Skylight. | |
9 | 4 | 1529 | 102 | 423978 | 5085644 | Heading east. | |
9 | 6 | 1529 | 104 | 425206 | 5085559 | Glassy surfaces, light sediment cover, accumulated sediment between the lobes. Some brittle stars. | |
9 | 10 | 1529 | 95 | 423528 | 5085914 | Some brittle stars on these lobates. Continuing the line east. | |
9 | 18 | 1530 | 101 | 425194 | 5085574 | More sediment right in here, still looking for the contact. | |
9 | 22 | 1529 | 104 | 422892 | 5084422 | Ropy lineated flow with a lot of sediments at the bottom of this collapse. | |
9 | 23 | 1528 | 101 | 424098 | 5085653 | Back onto the lobate surface - similar looking surfaces. | |
9 | 25 | 1529 | 101 | 422871 | 5084368 | Old flow sticking out - near the contact. | |
9 | 25 | 1530 | 100 | 424033 | 5085651 | Pockets of old lava sticking through the new. Jumbled lavas. | |
9 | 27 | 1531 | 112 | 424123 | 5085645 | 4120 5647 good fix of where the contact is. | |
9 | 28 | 1531 | 113 | 422879 | 5084349 | Area near contact where there are a few patches of jumbled older flow sticking through. | |
9 | 30 | 1531 | 105 | 424146 | 5085644 | Contact | R501-53 |
9 | 30 | 1531 | 105 | 424146 | 5085644 | Contact is found. Stopping to sample. | |
9 | 31 | 1532 | 101 | 423726 | 5084996 | Grabbing an old jumbled piece of lava. 4178 5646 | Rck_R501-8 |
9 | 44 | 1533 | 157 | 424183 | 5085645 | Still trying to sample this rock. | |
9 | 39 | 1533 | 146 | 424114 | 5085646 | Will try to grab a chunk of this old flow lava | R501-54 |
9 | 50 | 1533 | 162 | 424967 | 5085437 | Placing the rock sample in the starboard BioBox. | |
9 | 53 | 1533 | 152 | 423168 | 5085064 | Moving to get a piece of the new flow from the contact. | |
9 | 54 | 1533 | 153 | 423168 | 5085064 | Contact new lava. will try to get a sample | R501-55 |
10 | 2 | 1533 | 267 | 424178 | 5085632 | Sampling the new flow | |
10 | 3 | 1533 | 263 | 424123 | 5085633 | Trying to get a sample of new flow | R501-56 |
10 | 5 | 1533 | 248 | 424196 | 5085631 | Instead of a grab, we're going to try to slurp this rock sample. | SS-4_rck_R501-9 |
10 | 7 | 1533 | 233 | 424111 | 5085630 | x=4188 y=5637 Where we are suctioning. | |
10 | 8 | 1533 | 252 | 425206 | 5085564 | Suction sample of glass on newer lava | R501-57 |
10 | 9 | 1533 | 255 | 424190 | 5085634 | Jar 4 is filled with little pieces of basalt. Very successful suctioning. | |
10 | 10 | 1533 | 255 | 424133 | 5085633 | Now we're going to head north, 35, and follow the contact. Where we sampled we could se the little tube that fed this lava pillow. Neat-o. | |
10 | 12 | 1533 | 254 | 423168 | 5085048 | We're going 350, 40m. | |
10 | 12 | 1533 | 316 | 423204 | 5084746 | heading north, about 350 degrees, along the contact | |
10 | 18 | 1530 | 358 | 424180 | 5085707 | younger flow contact appears to have jogged to west | |
10 | 21 | 1530 | 5 | 424136 | 5085723 | following contact between jumbled older flow and darker new flow, to NW | |
10 | 23 | 1529 | 352 | 424126 | 5085730 | 4126 5730 good fix. | |
10 | 25 | 1528 | 353 | 424124 | 5085751 | Jumbled sheets, lots of sediments in the pockets, lobates. | |
10 | 27 | 1528 | 348 | 424116 | 5085778 | Not seeing tubes or jumbled flow. A bit flatter now. | |
10 | 29 | 1528 | 353 | 424118 | 5085791 | Furry stuff growing on the lavas. This is older. | |
10 | 29 | 1528 | 351 | 424115 | 5085794 | Transitioned rapidly from the boundary into flat lobates and sheet flows with a lot of sediment pockets. Moving the ship so we can move west more now. | |
10 | 31 | 1528 | 348 | 424111 | 5085823 | Lots of brittle stars, furry stuff, sediment pockets, etc. | |
10 | 32 | 1529 | 353 | 424113 | 5085836 | Looks like new lava filing up an old collapse. | |
10 | 33 | 1529 | 359 | 424114 | 5085842 | New flow filling in a collapse | R501-58 |
10 | 33 | 1529 | 351 | 424114 | 5085842 | We've lost p-code. We're still going north, northwest. Looking at the new lavas. | |
10 | 34 | 1529 | 355 | 424118 | 5085850 | Still in the newer lava, little bits of sediment pockets. Surface of the glass is fairly clean, glassy tubes and fingers extending out. | |
10 | 34 | 1528 | 353 | 424120 | 5085854 | Can see contact. | |
10 | 36 | 1528 | 357 | 424122 | 5085872 | They think we have P-code back now. We're hanging out until we figure out if we can move the cage. | |
10 | 39 | 1529 | 352 | 424125 | 5085882 | We're in an older area with collapses, sheet flows, nice pillar with a hole down the middle. | |
10 | 40 | 1528 | 322 | 424124 | 5085884 | Massive lineated sheet flow with a lot of sediment. It is heading to the southwest. | |
10 | 42 | 1530 | 338 | 424119 | 5085898 | ROPOS is east of contact. Over sedimented ropy lavas. | |
10 | 43 | 1530 | 342 | 424114 | 5085902 | Push up structures. Large blocks. Higher to west. Sheet flow down below. End of tether. | |
10 | 45 | 1530 | 334 | 424100 | 5085919 | Extensive area of sheets. Except for sediment it doesn't seem that old. Jogging to the East. | |
10 | 46 | 1529 | 331 | 423972 | 5086186 | SE SE seems to be the lineation direction. Changed to broken up, folded sheets. Up a short wall. Very jumbled pile of sheets at the top. | |
10 | 47 | 1528 | 330 | 424099 | 5085958 | Jumbled sheets do not have much animal cover. Back into lobates with a lot of sediment in between. Looks old, more brittle stars and sediments. | |
10 | 49 | 1527 | 329 | 424084 | 5085986 | Low relief lobates, lots of sediment between the lobates. Rattail. Back into jumbled sheets. Back into lobates again. | |
10 | 51 | 1525 | 330 | 424065 | 5085998 | Jumbled flows with sessile animals at the tops. A little collapse, a few short pillars. Contact with new lava, lobates. Mixed area, old jumbled with new lobates. A few brittle stars. Sediment in the cracks of lobates. | |
10 | 55 | 1527 | 334 | 425217 | 5086016 | Back into the sheet flow. Lots of sediments. Lineations running the WNW. Trying to determine if seds are hydrothermal. No indication that they are. | |
10 | 57 | 1527 | 337 | 425215 | 5086034 | Back up to lobates. Pretty glassy. | |
10 | 58 | 1526 | 335 | 424048 | 5086070 | Contact. Ship will stop and turn to due west. Large fish rat tail. good contact. Turning west now 1100 | |
11 | 2 | 1526 | 280 | 424025 | 5086074 | contact, blacker and glassier on left | R501-61 |
11 | 1 | 1526 | 273 | 424040 | 5086080 | Crossing southern most area that we saw last year. Big block, talus drain-out area. Jumbled area, lobates lapping up against older lobate drain out. Contact w/ blacker and glassier with older reddish lavas. | |
11 | 6 | 1525 | 268 | 424010 | 5086074 | Drain out. Moving again. Sediment almost covers the ropes. Piece of roof. Up onto the young lobate flows. Real glassy, very little on them. crab, flatter lobate, still glassy fronts to the lobes. Sheet flow, collapse. | |
11 | 9 | 1524 | 272 | 423986 | 5086069 | Slope coming from the right. Ropy and lineated sheet flows coming down the slope. Broken up sheets. Some collapse. Jumbled ridge. Some staining on jumbled rocks. Heading west. Collapse in the jumbled flow. Very chaotic. | |
11 | 12 | 1524 | 269 | 423928 | 5086067 | Huge, not sure what it is. Big blocks. Large ridges. About 3 meters of relief. Sediment on the top of a ridge. Big depression. We have gone down a couple of meters. Push up ridge with orange oxide deposits. Looks like a wick. | |
11 | 16 | 1524 | 262 | 423889 | 5086065 | In an area of deep depression. Some flock in the water. | |
11 | 18 | 1525 | 268 | 424057 | 5086481 | Jumbled lavas, with ridges. Looks like it's getting deeper. At the edge of deepest part of basin. Lineated flows at the bottom. Lineated flows trend S to SW. Some of the sediments here are hydrothermal. Pieces of white flock. | |
11 | 21 | 1529 | 269 | 423844 | 5086057 | Deepest was about 16.5 meters, now back up. Looks like mat coverage. Big plates, turned up on their side. Pahoehoe lava. Stop the ship. Plan to take a sample. | |
11 | 25 | 1529 | 276 | 423829 | 5086069 | Attempting to take a sample in the mat covered, ropy sheets. Grabbing with claw. | |
11 | 26 | 1529 | 277 | 423831 | 5086069 | rock sample into forward strb. | Rck_R501-10 |
11 | 28 | 1529 | 275 | 423830 | 5086069 | Second pieces, (rock broke into two). Both in stbrd front. Check gauges. | |
11 | 33 | 1529 | 276 | 423812 | 5086071 | new or interim flow, mat on surface | R501-62 |
11 | 31 | 1529 | 276 | 423215 | 5085317 | Panning camera. Mat on the surface. Looks like deflated bag creatures. | |
11 | 34 | 1529 | 277 | 423214 | 5085313 | closer view of mat on rocks | R501-63 |
11 | 34 | 1529 | 276 | 423833 | 5086069 | Will attempt to take a SS j4 of mat. Kim's highlight tape. Flushing the hose into bottle 4. Positioning to J4. Start sample pump 11:40, material is not being sampled yet. Need to get closer to surface. Now getting material. Pump off 11:50 | SS-j4_mat
_R501-11 |
11 | 52 | 1529 | 275 | 423828 | 5086066 | Going to head West across the new lava field. Small mounds of hydrothermal iron. Some white floc? A lot of iron deposits. Ridges of jumbled lava. Patchy mat covering. Big piles of jumbled, large ridge several meters high. | |
11 | 58 | 1524 | 276 | 423786 | 5086068 | In a venting area now. White mat, large crab, lots of floc, more mat. Waiting for the cage. Cage motor off. White filmy mat. | |
12 | 1 | 1523 | 273 | 423789 | 5086069 | Moving west again. White staining , bacterial mat, so far no major flow areas w/ tube worms, etc. Some tube worms. Down in an inaccessible pit area. Shimmering water. Lots of Fe sediments, perhaps some active places. Lots of iron sediments. | |
12 | 6 | 1524 | 271 | 423867 | 5085664 | Getting out of venting area. Lineate going S. Flat lineated flows. Lots of orange-tan sediment. Flows are glassy when they do crop out. | |
12 | 9 | 1525 | 264 | 423720 | 5086056 | Continuing west over ropy, lineated flows. Ropes becoming larger. Lots of mounds of orange hydrothemal sediment. Thick pockets of iron rich seds. | |
12 | 13 | 1524 | 274 | 423661 | 5086047 | Fe mat, orange seds | R501-65 |
12 | 12 | 1524 | 255 | 423671 | 5086049 | Thick deposits of iron rich seds. Moving west again. Jumbled ridges of pahoehoe lava. Lots of sediment. Steve's highlights on. Back into jumbled. Coming out of depression. Into glassy lobates. Collapse pit. Lobate on the other side. | |
12 | 17 | 1521 | 268 | 423578 | 5086056 | Big lobates, younger, lightly sedimented. Brittle stars. Big drain out. | |
12 | 19 | 1521 | 271 | 423554 | 5086068 | R501-66 | |
12 | 19 | 1521 | 266 | 423554 | 5086068 | Pit large drain out. Stop Steve's tape. Looking older. Back over lobate. Don't see the mat. Another drain out w/ lots of sediment at the bottom. At least 2 meters dep. Almost looked like a contact. | |
12 | 24 | 1520 | 274 | 423500 | 5086064 | thin roof near collapse | R501-67 |
12 | 22 | 1521 | 276 | 423515 | 5086063 | Lobates w/ brittle star, small sponges and holothurians. Drain out skylight. Don't see large sponges. Deep drain out pit, thin roof 10 cm. Big blocks in bottom. Younger against older? Small pockets of sediment. | |
12 | 25 | 1521 | 287 | 423475 | 5086064 | "Older" spire in collapse lots of large sponges on it younger lavas nearby | R501-68 |
12 | 25 | 1521 | 270 | 423481 | 5086065 | Drain out. Spire with lots of large sponges. Older spire with lots of glassy debris. one with a crab on it. Spires appeared to be older, because they had so many sponges on them. | |
12 | 27 | 1521 | 271 | 423456 | 5086069 | Back over lobate, with small sediment accumulation. No mat. There are brittle star. Collapse area w/chaotic lava. Lots of sponges on lava. Stop the ship on ridge of jumbled lava. Will try to grab for a rock. | |
12 | 30 | 1522 | 291 | 423442 | 5086093 | Grabbing a rock, older w/ sponges, attempting to place it in the port box. Right front of port box. Into the box. Free sponge included. | Rck_R501-12 |
12 | 33 | 1521 | 304 | 423441 | 5086088 | Starting the ship again. Drain back, on the top is a lineated flow w/ sponges on it. Still in a collapse area. A couple levels of collapse. | |
12 | 34 | 1520 | 301 | 423411 | 5086077 | Change VCR tapes. Lobates w/ holothorian and gorgonian. Water is murkier. Black glassy lobate flows with small amount of sediment. Drain pit. 1 meter collapse area. Gauge check. | |
12 | 38 | 1523 | 283 | 423353 | 5086075 | contact, very fresh now - so previous wasn't 1998 | R501-70 |
12 | 38 | 1523 | 284 | 423353 | 5086075 | Contact with new flow. Stop the ship to take a core sample. | |
12 | 41 | 1523 | 252 | 423348 | 5086076 | good fix. Looking at contact. Brittle stars on older, small sponges. New black, glassy overlapping new lava. Will try to get one core on each side of the contact. | |
12 | 47 | 1524 | 257 | 422335 | 5085068 | Will take core with the black stripes first. Grabbing w/ 5 function. Transferring to 7 function. Taking core, 12:49.second try, still not much, still trying, got it. | Rck_core
_R501-13 |
12 | 54 | Mashing glass into wax on the bio-box at a glass free spot. Going back for more glass on the chapstick corer. Mashing into BioBox, but it seems to reduce the amount of sample on the chapstick. Sample complete 1302 | |||||
13 | 4 | 1524 | 263 | 423348 | 5086073 | Moving to older side of the contact. Much lighter albedo, more seds. more brittle stars. Breaking up the surface. Lifting the chapstick corer ( yellow striped). Grabbing corer with the 7 function arm. | |
13 | 7 | 1523 | 296 | 423349 | 5086075 | Attempting to collect core. Again attempting to mash the glass into the wax on the bio-box lids. Lost much of sample, will try to smash and smear back on. It seemed to work. Good amount of sample. Will go into bag directly, positioned on the other side | Rck_core
_R501-14 |
of the bag from the first sample. Appear to scrape some wax on BioBox. Finished with sample in the bag at 1314 | |||||||
13 | 15 | 1524 | 295 | 422336 | 5085066 | Attempting to trip Niskin. Tripped at 13:16. Evil Niskin strikes again. Ring is caught on 5 function. Free. Grabbing suction sampler handle. | Niskin_R501-15 |
12 | 41 | 1524 | 254 | 423349 | 5086075 | close-up of contact, likely 1998 flow | R501-71 |
13 | 19 | 1523 | 292 | 423348 | 5086073 | Ready to move West. Young lobates. Flat surfaces on the top. Telling the ship to move. Not much on lobates. Not much sediment cover. Holothorian. Waiting for the cage. A few brittle stars. Lobate flows. | |
13 | 25 | 1523 | 283 | 423291 | 5086082 | thin roof, at collapse area | R501-72 |
13 | 24 | 1523 | 283 | 423311 | 5086072 | Continuing West. Black glassy lobes. Collapse area, sediment covered blocks at bottom. Back to lobates. White areas on lobates. Big lobes. Glassy lobes. Lobates on flatter area. | |
13 | 29 | 1523 | 286 | 423249 | 5086080 | Lobates tops flat with rounded bottoms. More brittle stars. Lots of yellow iron sediment. Very glassy. Flatter area. | |
13 | 32 | 1523 | 269 | 422600 | 5085461 | Lots of broken up lavas, nav not good right now, | |
13 | 33 | 1523 | 271 | 423201 | 5086066 | good fix. Flatter flow, bucked up sheet flow. Broken up plates, big brittle star. | |
13 | 37 | 1523 | 272 | 423162 | 5086068 | Fairly glassy lobate flows w/ little sediment and some brittle stars. | |
13 | 38 | 1524 | 277 | 422534 | 5085484 | Still going over the same kind of lava. | |
13 | 41 | 1525 | 279 | 423099 | 5086072 | More sponges, more sediment, looks older. Higher density of brittle stars, may have crossed the contact. Still look like glassy lavas. Whole bunch of sponges. | |
13 | 44 | 1526 | 306 | 423067 | 5086079 | Ship is stopped. Getting ready to collect last chapstick sample. | |
13 | 46 | 1526 | 308 | 423066 | 5086078 | good fix. Picking up chapstick with 7 function arm. Core has two white stripes on it. Transferring to 5 function arm, regarding with 7 function arm. | |
13 | 51 | 1526 | 304 | 423066 | 5086078 | Core sampling, purple core, sample number 16 | R501-73 |
13 | 49 | 1526 | 306 | 423066 | 5086078 | This is the purple striped chapstick sampler (not white). Starting to core the glass. Atempting to do a light smush into the bio-box. Seems to have worked well. The key is the light smush. Attempting to place the core in | Rck_core
_R501-16 |
14 | 0 | 1526 | 305 | 423066 | 5086078 | Adjusting cores position in the bag. Bag closed. Regarding the suction sampler arm. Will be returning to cage. | |
14 | 6 | 1500 | 323 | 423100 | 5086078 | Back at the cage. Will be doing a 1.5 km transit. | |
14 | 11 | 1423 | 20 | 423057 | 5086016 | Beginning transect range 1475 meters, bearing 175 at 1 kt. | |
15 | 24 | 1490 | 227 | 423214 | 5084635 | Reached end of transect, going down to the bottom. | |
15 | 27 | 1538 | 317 | 423188 | 5084617 | On the bottom. Regrouping the suction sampler because it was flapping. Heading to Crevice to take a dead tube worm grab. | |
15 | 33 | 1536 | 2 | 423478 | 5083771 | Moving the ship 40 m to the NW. | |
15 | 41 | 1537 | 328 | 423190 | 5084637 | We are approaching a crevice, not THE Crevice. Big Keith is doing the air drums. | |
15 | 42 | 1536 | 322 | 423175 | 5084649 | good fix. A small, scraggly bush of tube worms. Maia is getting greedy - waiting for the big bush. | |
15 | 44 | 1536 | 323 | 423169 | 5084655 | Lava really isn't looking any different from the newer stuff that we've seen all along. | |
15 | 45 | 1536 | 318 | 423157 | 5084638 | We are looking around for a good grab - down into the collapsed area. Lobates still with a light coating of sediment/debris. | |
15 | 48 | 1537 | 140 | 423399 | 5084861 | Old tube worms and crab on edge of crevice. | R501-74 |
15 | 47 | 1538 | 101 | 422817 | 5084266 | Crab full of eggs. Nice view of the wall of the crevice. Some scanty tube worms on the wall. More crabs. | |
15 | 49 | 1537 | 79 | 423163 | 5084654 | Hit the edge of the crevice. Lateraling back along the crevice - moving east now. Crevice is around 5 m dep. | |
15 | 51 | 1538 | 129 | 423152 | 5084633 | Turned the corner in the crevice -now hdg almost due south. Finding a few larger tube worm bushes on the wall. Some larger bushes on the lobates on the roof. Tube worms all along the cracks between the lobates. TONS of crabs. | |
15 | 54 | 1536 | 48 | 423166 | 5084617 | Still on the roof. Looking for the crevice again. Jackpot - down in the crevice there is a huge clump of tube worms. A couple vent fish and a couple crabs. | |
15 | 57 | A bit of flow, but doesn't look like there is much fauna besides a few live tube worms and a couple scale worms. x=3177 y=4620 good fix. Going in for the grab at 1557 | Bio_R501-17 | ||||
16 | 10 | 1539 | 35 | 423178 | 5084641 | Just had a litle bit of an avalanche on top of the tube worm bush. Finished sampling. Keith just said that this is NOT part of the crevice, but just a hole in the roof. | |
Taking a quick look around to see what the area looks like - if there are any more large tube worm bushes about. | |||||||
16 | 13 | 1538 | 269 | 423171 | 5084630 | Tubeworm bush lacking much of the other fauna you normally see. | R501-75 |
16 | 12 | 1538 | 243 | 423170 | 5084630 | All the tube worm bushes on top of the lobate roof look smaller - possibility that they are new worms since the eruption. Can't see any other fauna on the bushes.But the worms of the grab we just took look too large to be new since the '98 eruption. | |
16 | 15 | 1531 | 87 | 423175 | 5084631 | End of dive. Heading back to the cage and coming up. | |
ROPOS on deck at 1711 UTC | |||||||
Dive Summary: This dive began by deploying the time lapse camera at Mkr-33 and collecting a suction sample. Next ROPOS transited to the west side of the 1998 lava flow, SW of Mkr-113 and started a geologic traverse due east. | |||||||
ROPOS started the dive in older lavas and drove east to the contact with younger lava when the dive had to be temporarily stopped because the connector to the color camera light got pulled out and the suction sampler jammed. | |||||||
After a quick turn around, the dive resumed at the western contact - driving east and taking rock samples all the way to the eastern contact between younger and older lavas. ROPOS then drove north along the eastern contact for about 400 meters and | |||||||
then traversed back to the west in lavas known to be '98. A section of clearly older lava was crossed just north of Mkr-113, then back into '98 lava, and finally back into older lava again. 13 rock samples were collected during these two traverses. | |||||||
Finally, ROPOS transited 1.5 km south to the Crevice Vent site to collect a tube worm grab. |