Alvin 3358
Port: Van Dover*
Stbd: Gronvold
Pilot: Blee Williams
| TIME | HDG | DEPTH | OBSERVATIONS |
| 0833 | 100 | 1000 | Maggie spins; left, 1 degree per second |
| 0855 | Discontinued Maggie spins | ||
| 0917 | Sheet flow with folds; 100 m W of target site | ||
| 0923 | 100 | Sampling sheet flow; digital image | |
| 0932 | 130 | 2613 | Finished sampling; weathered glass |
| 0933 | 115 | Smooth and folded sheets; with light dusting of sediment | |
| 0934 | Step down 1-2 m onto sheets then lobates | ||
| 0935 | 110 | 2609 | Small skylight in broad lobate flow; climbing |
| 0937 | Step down into broken sheet | ||
| 0940 | 110 | 2610 | Broken folded/jumbled sheet |
| 0941 | Edge of lava lake with small pillars, some knocked down | ||
| 0942 | Deep depression/well 10 m deep, wider than deep; still climbing | ||
| 0944 | Still over broken up lava | ||
| 0945 | 111 | 2607 | Intact lobate sheets; with local collapse |
| 0946 | Lobate flow on top of sheet contact? | ||
| 0947 | 115 | 2605 | Over lobate then to ridge of jumbled, broken flow |
| 0948 | Lobates; continuing up slope; collapse to distant port | ||
| 0950 | Small collapse region | ||
| 0951 | 100 | 2600 | Lobate flows, continuing upslope toward Oasis site |
| 0954 | 100 | 2598 | Large lobate flow; then broken folded sheet within lobate flow |
| 0957 | Sheet/folded flow giving way to lobate again; solitary budded pillows; continuing up slope | ||
| 0959 | 2593 | Budded pillows among lobates | |
| 1000 | 2591 | Elongate pillows; sampling bud from lobate flow | |
| 1009 | 2590 | Finished sampling; continuing toward Oasis | |
| 1012 | Budded lobates and solitary pillows; increasing anemone densities | ||
| 1013 | 113 | 2586 | Continuing upslope into denser anemones |
| 1015 | Dense anemone bed; Japanese fiber optic expt (yellow line) | ||
| 1016 | Barnacle bushes; clams, mussels, fish = OASIS | ||
| 1018 | 113 | 2581 | Barnacle field with clams; amphipods in water |
| 1030 | Tmax 5.2 in mussels; can not see much living among mussels through viewport except limpets | ||
| 1040 | Oasis Sample Site 1: Pot #1 complete; closed to red mark. (But on deck found to contain only 1 mussel) | ||
| 1048 | Scooping into Box #5 from Oasis Sample Site 1 | ||
| 110 | 2581 | Heading to second sample site at Oasis, along edge of drop-off to East; across drop-off there are only dead mussels plus anemone bed; inactive sulfide edifice (13 m tall) with serpulid tubes | |
| 1103 | Still on far side of drop-off; some apparent mass wasting of basalt with biota leading to death | ||
| 1113 | 3-chip camera shows video | ||
| 1114-1120 | 2582 | Pot #5 deployed at Oasis Sample Site 2; on pan and tilt video | |
| 1124 | Setting up to fill Box #4 from Oasis Sample Site 2 | ||
| 1139 | Tmax 4.06 on pan-and-tilt of mussels in a ½ m wide crack | ||
| 1145 | Setup for sampling Pot #3 at Oasis Sample Site 3 | ||
| 1147 | Finished with pot; gagged on mussels | ||
| 1158 | Digital video of sample site post-sampling; scoop sampling into Box #1 | ||
| 1215 | Driving N along drop-off; passing by Japanese anchor | ||
| 1217 | Anemone/barnacle bed with small pockets of mussels on lobate | ||
| 1224 | Barnacles and anemones on 3-chip | ||
| 1228 | 2582 | Oasis Sampling Site #4: Tmax 6.3C; white-stained mussels into Box #3; understory of small < 1 cm diameter grey anemones beneath barnacles and orange anemones | |
| 1247 | Looking for a nearby site with brown mussels for Oasis Sample Site #5 | ||
| 1253 | Abandoned this site; moved to new site close by and filled Box #2 (no T measurement here) | ||
| 1258 | At edge of mussel bed and into peripheral anemones | ||
| 1325 | At Oasis Sample Site #6; Tmax 5.9 C; deployed small yellow marker #1 with rock anchor. Collected one barnacle-covered rock sample plus small pieces of rock into grey box | ||
| 1339 | Finished at Oasis | ||
| 1340 | 060 | Along margin of a collapse with sponges down in collapse; sheet flow | |
| 1341 | Crossing Japanese fiber optic line and weights; leaving Oasis area; step down onto lobates and then to a collapse area; out of hydrothermal area | ||
| 1341 | 2581 | Dead bivalves in lobate flow | |
| 1343 | 060 | 2580 | Collapse terrain with lobate tops |
| 1345 | 060 | 2579 | Pillow dripped into a small collapse; lobate field with local collapse |
| 1348 | Budded pillows grading into lobate | ||
| 1352 | Small fissure ½ m across, ½ m deep; lobate; old hydrothermal area with anemones and dead bivalve shells | ||
| 1354 | Possible contact into more glassy lobates; sampling | ||
| 1414 | Sample of pillow crust collected | ||
| 1416 | 172 | 2575 | Heading directly to WP 4 |
| 1420 | Local collapse in lobate flow | ||
| 1427 | 030 | 2573 | Glassy lobates |
| 1429 | Lobates, then pillows | ||
| 1432 | 033 | 2577 | Sloping terrain down |
| 1433 | Contact? Lobates; older? | ||
| 1435 | Lobates with solitary pillows | ||
| 1439 | 048 | 2582 | Contact? Different flow? Climbing upslope; blacker, less sediment |
| 1441 | 044 | 2580 | Budded lobates and pillows |
| 1442 | Pillows | ||
| 1444 | Lobate flow, anemones; Stanley 50 m away | ||
| 1445 | Anemone bed with live orange anemones and dead serpulids | ||
| 1446 | At Mkr 21 and large sulfide edifice (active) | ||
| 1447 | Looking for live mussels; dead mussels only | ||
| 1454 | 323 | 2581 | No sign of any active mussel beds |
| 1501 | Still looking for mussels; pillows with anemones | ||
| 1503 | 185 | 2583 | Over pillows changing to lobate |
| 1509 | Back in anemone bed; finished dive at black smoker mkr #21, with maggie spins at 1000 m |