Dive 547

UTC

Z(m)

Hdg

UTM X

UTM Y

Comments - Dive R547

Samples

Investigator

SubSmps

FrGrb#

Positions in utm x/y columns are automated and not flagged for accuracy. Consult dive maps for final position data.

Tasks: HFS and Suction sampling in area of '98 lava flow, Deploy MTR's: Magnesia, Mkr-N3, OldWorms, Mkr-N41, Nascent, Mkr-33, Cloud, Snail, Castle.

Bottom time: JD190(7/8) 0541- JD191(7/9) 0009

1448

289

422102

5079341

0255 Ropos in the water.

03:15:27 Jul 08 '00

0

194

423681

5088509

0314 Ropos back on deck.

03:07:27 Jul 08 '00

41

308

423850

5087101

303 Coming back up to adjust balast.

03:13:37 Jul 08 '00

0

168

423681

5088509

0313 Back on surface.

04:14:19 Jul 08 '00

1

185

423681

5088509

0414 Ropos back in water.

04:30:43 Jul 08 '00

157

5

423681

5088509

Started recording water column on Tunnicliffe tape at 4:19.

05:40:37 Jul 08 '00

1521

191

423646

5088562

0540 On bottom. Starting Embley tapes.

05:44:37 Jul 08 '00

1525

106

423663

5088563

Waiting for a Ropos fix to find out where we are - WAIT!! There's the osmo sampler. We must be at Magnesia. There is no visible flow.

05:46:47 Jul 08 '00

1527

225

423663

5088563

A lot of iron oxides in the area. We are looking around, but it appears that the whole area at and around Magnesia is dead - no flow!

05:45:47 Jul 08 '00

1525

186

423663

5088563

Magnesia osmo

R547-001

05:45:47 Jul 08 '00

1525

186

423663

5088563

near Magnesia

R547-002

05:46:27 Jul 08 '00

1525

215

423663

5088563

Near Magnesia - pillar and bathtub rings with collapse pit in the distance.

R547-003

05:47:17 Jul 08 '00

1526

216

423664

5088556

near Magnesia

R547-004

05:48:37 Jul 08 '00

1523

223

423664

5088556

Positioning to deploy at Marker here.

05:49:37 Jul 08 '00

1526

128

423664

5088556

near Magnesia

R547-005

05:55:47 Jul 08 '00

1523

120

423664

5088551

Mkr-67 at Magnesia

R547-006

05:50:17 Jul 08 '00

1527

121

423664

5088556

The osmo is sitting down in the pit - we are now DEPLOYING Mkr-67 on the top of the ledge above the osmo. The heading is 120 looking down at the marker and the osmo is right below the ledge.

05:56:37 Jul 08 '00

1523

211

423664

5088551

Osmo at Magnesia (Mkr-67 at top right).

R547-007

05:57:57 Jul 08 '00

1524

195

423048

5089150

Heading down towards the osmo in the pit at Magnesia to see if there is any visible flow at all.

05:59:37 Jul 08 '00

1528

35

423054

5089141

osmo at Magnesia

R547-008

05:59:37 Jul 08 '00

1528

35

423054

5089141

osmo at Magnesia

R547-009

06:00:27 Jul 08 '00

1529

357

423057

5089135

osmo at Magnesia

R547-010

05:59:57 Jul 08 '00

1529

8

423057

5089135

Photo one, photo two of Magnesia. Heading 355 looking at the marker on the top of the pit with the osmo at the base of the hole.

06:01:07 Jul 08 '00

1529

1

423057

5089135

Photos 3, 4, 5 at Magnesia, looking into the pit.

06:01:57 Jul 08 '00

1529

6

423057

5089135

There is a scale worm swimming.

06:02:47 Jul 08 '00

1529

2

423662

5088543

Photo 6 of Magnesia, some more scale worms.

06:02:17 Jul 08 '00

1529

4

423057

5089135

pit at Magnesia

R547-011

06:02:37 Jul 08 '00

1529

3

423662

5088543

pit at Magnesia

R547-012

06:04:07 Jul 08 '00

1530

359

423662

5088543

Fix for Magnesia: x=423661 y=5088545. z=1529m. Navigation is not working well right now. Looking into the hole that used to be venting in '98 and '99. There is no visible flow and the only macrofauna. Appears to be a few scale worms.

06:06:17 Jul 08 '00

1529

354

423662

5088543

A spider crab.

06:05:57 Jul 08 '00

1529

354

423662

5088543

Magnesia (iron oxide biofilm?)

R547-013

06:07:07 Jul 08 '00

1529

355

423668

5088557

Magnesia (iron oxide biofilm?)

R547-014

06:07:17 Jul 08 '00

1529

354

423668

5088557

The close up view shows some amphipods and/or copepods swimming around. The video is flickering a bit.

06:13:49 Jul 08 '00

1529

355

423668

5088557

Lavasicles at Magnesia.

R547-015

06:13:49 Jul 08 '00

1529

355

423668

5088557

lavasicles

R547-016

06:10:19 Jul 08 '00

1529

354

422989

5089166

Magnesia

R547-017

06:09:19 Jul 08 '00

1529

356

423668

5088557

Magnesia

R547-018

06:10:39 Jul 08 '00

1529

24

422989

5089166

Looking around at the geology - lava pillars around the sunken pit where venting used to be. Now moving to Oldworms, about 175 meters away at a bearing of 135. Picture 7 of Magnesia pit.

06:11:59 Jul 08 '00

1528

262

422989

5089166

spider crab at Magnesia

R547-019

06:12:19 Jul 08 '00

1528

242

422989

5089166

Highlights off.

06:14:09 Jul 08 '00

1525

133

422989

5089166

Moving to Oldworms.

06:15:20 Jul 08 '00

1526

139

422989

5089166

Moving over lava pillars, sunken pits with jumbles flow on the floor. The whole northern part of the '98 flow seems to have stopped venting.

06:16:09 Jul 08 '00

1527

138

422989

5089166

Moving the ship to position for drive to Oldworms.

06:18:29 Jul 08 '00

1526

137

422989

5089166

Photo 8 of lava pillars between Magnesia and edge of lava flow (where Oldworms is). This is probably one of the primary eruptive fissures of the '98 flow.

06:23:10 Jul 08 '00

1524

134

423075

5089141

Ship is now starting to move.

06:25:00 Jul 08 '00

1524

138

423075

5089141

Heading to Oldworms located at 423785, 5088418, depth 1528m. Still going over lava pillars and collapsed area.

06:26:50 Jul 08 '00

1523

134

423075

5089141

Nav sucks.

06:27:30 Jul 08 '00

1525

134

423684

5088560

Moving out towards the eastern edge of the lava flow. Jumbled flow with intermittent lava pillars.

06:29:50 Jul 08 '00

1524

123

423709

5088538

A couple rattails, now on the roof with pillows.

06:32:00 Jul 08 '00

1525

133

423709

5088538

Sponges on the old lava on the way to Oldworms.

R547-020

06:31:40 Jul 08 '00

1524

131

423709

5088538

Photo 9 of sponges and a holothurian - we must be on old lavas now (biogeo wisdom). Lots of sediment - diatomaceous?

06:33:50 Jul 08 '00

1525

136

423735

5088506

White mat in cracks, evidence of venting! Photo 10. Zooming in on a crack, there are a few limpets and some bacteria mat.

06:34:20 Jul 08 '00

1526

135

423760

5088477

On the way to Oldworms.

R547-021

06:34:50 Jul 08 '00

1526

137

423760

5088478

On the way to Oldworms

R547-022

06:35:30 Jul 08 '00

1525

143

423745

5088494

Tubeworms on the way to Oldworms

R547-023

06:36:12 Jul 08 '00

1525

145

423745

5088494

Tubeworms on the way to Oldworms

R547-024

06:36:22 Jul 08 '00

1525

175

423745

5088494

Tubeworms and protozoan mats on the way to Oldworms

R547-025

06:36:42 Jul 08 '00

1524

198

423745

5088494

Tubeworms and protozoan mat on the way to Oldworms

R547-026

06:35:30 Jul 08 '00

1525

143

423745

5088494

Following the cracks. Found a few small tubeworms, and protozoan mat. More tube worms and blue protozoan mats covering large areas of basalt. This seems to be a fairly extensive area. Position: x=423750 y=5088454, depth 1523m.

06:40:02 Jul 08 '00

1525

166

423754

5088467

Dead clams about 50m from Oldworms

R547-027

06:39:42 Jul 08 '00

1524

165

423754

5088467

Bed of clams in same area. Looking to see if any are alive. They look all dead unfortunately, but some might be sleeping!

06:41:12 Jul 08 '00

1525

168

423758

5088462

Spider crab near protozoan mat on the way to Oldworms

R547-028

06:41:32 Jul 08 '00

1525

216

423763

5088456

On the way to Oldworms

R547-029

06:42:02 Jul 08 '00

1524

248

423763

5088456

Considering naming this new site "Blue Lagoon", but settled on BlueNose.

R547-030

06:43:02 Jul 08 '00

1526

208

425645

5087401

Tube worms at BlueNose.

R547-031

06:41:02 Jul 08 '00

1526

166

423758

5088462

More blue protozoan? Mat around crack. White mat seems to be right in the crack with the blue mat on the periphery. Now we are at a tubeworm bunch. We are going to call this site "Blue Nose" (Blunose).

06:45:12 Jul 08 '00

1524

285

423760

5088458

We were just pulled off site by the ship. Stirring up sediment, rising off the bottom until it settles and the ship repositions.

06:46:12 Jul 08 '00

1516

301

423760

5088458

This area, "Blue Nose", is 50 m to the NW of Oldworms.

06:49:52 Jul 08 '00

1525

325

423762

5088446

Blunose

R547-032

06:50:02 Jul 08 '00

1525

314

423762

5088446

Tube worms at Blunose.

R547-033

06:51:32 Jul 08 '00

1526

329

423753

5088449

Tubeworms at Blunose.

R547-034

06:50:32 Jul 08 '00

1526

328

423762

5088446

Photo 12 at Blunose. Close up of tubeworms, limpets, blue globs.

06:52:32 Jul 08 '00

1525

328

423753

5088449

Blunose

R547-035

06:53:02 Jul 08 '00

1525

329

421633

5088895

Background temp. is 2.5. Limpets are right around crack openings with the blue mat on the top of the basalts. Tubeworms are nestled in the crack with some polynoids. Trying to get a good temperature measurement to see if it's worth taking a fluid sample.

06:57:02 Jul 08 '00

1525

329

423754

5088451

Now trying to measure the temperature over the blue mat. Moving the sub caused a bunch of floc to come out of the crack. Waiting for it to settle so we can see.

07:01:22 Jul 08 '00

1526

267

421649

5088911

Couldn't detect any temp. anomaly about blue mat. Moving SE towards Oldworms.

07:03:22 Jul 08 '00

1525

128

423759

5088447

Moving over pillows, some are blown out dotted with blue mat and white staining. Back into a shallow collapsed area. Spider crab.

07:04:18 Jul 08 '00

1523

120

423759

5088447

Photo 13 of collapse pit with lava pillars.

07:07:08 Jul 08 '00

1524

112

423778

5088437

Fishing net near Oldworms?

R547-036

07:06:48 Jul 08 '00

1523

83

423778

5088437

We think we might be at Oldworms. Picture 14 of a net on the seafloor wrapped around a pillow. It may be a fishing net.

07:08:38 Jul 08 '00

1523

109

423778

5088437

Tubeworms at Oldworms (?)

R547-037

07:08:38 Jul 08 '00

1523

109

423778

5088437

Photo 15 of big tubeworm bush. The tubeworms are very long and skinny and stick-like. Their plumes are out but they are not bushy. A lot of bacteria mat/floc. Ropos is fixing on this site at 20 m North of "Oldworms" - but the site seems to be a big one,

07:10:58 Jul 08 '00

1525

89

423790

5088438

Mats near Oldworms.

R547-038

07:12:18 Jul 08 '00

1525

88

423785

5088436

vent fish near Oldworms

R547-039

07:13:58 Jul 08 '00

1525

88

423786

5088436

crab near Oldworms

R547-040

07:11:08 Jul 08 '00

1525

87

423790

5088438

Beautiful lava outcrop covered in limpets, blue protozoan mat, a few tubeworms and a vent fish (zoarcid). There is an opening with flow and limpets are stacked up to 10 on top of each other down into the flow. There are also a few galatheid crabs.

07:15:28 Jul 08 '00

1525

180

423789

5088439

Tried to get into this hole to sample flow, but Ropos couldn't reach. Moving on to another patch of tubeworms to find some good flow.

07:17:18 Jul 08 '00

1525

127

423784

5088433

Photo 16 of tubeworms in same area as above.

07:17:58 Jul 08 '00

1525

114

423784

5088428

Coordinates for where Ropos has been fixing lately: 423785, 5088436 roughly.

07:18:58 Jul 08 '00

1525

114

423785

5088429

Found a new bush with visible flow, going in to take a temperature sample. Highlights off.

07:21:08 Jul 08 '00

1525

114

423791

5088430

Temperature anomaly is about 0.3 degrees.

07:22:58 Jul 08 '00

1525

110

423787

5088430

07:23. OldWorms

R547-041

07:24:08 Jul 08 '00

1525

155

423786

5088427

07:24. vent fish at OldWorms.

R547-042

07:27:08 Jul 08 '00

1524

189

421713

5089003

Looking for a place to settle so we can do something about these two MTRs dragging off the purse.

07:32:30 Jul 08 '00

1523

153

423797

5088416

ROPOS has one of the MTRs in the port arm and the other still dangling.

07:35:00 Jul 08 '00

1524

329

423799

5088425

Limpets at OldWorms

R547-043

07:36:20 Jul 08 '00

1523

227

423799

5088425

Embley tapes changed.

07:39:00 Jul 08 '00

1525

39

423799

5088425

Found some flow at OldWorms.

07:40:10 Jul 08 '00

1525

36

423781

5088417

Spider crab. Southern end of Oldworms area.

R547-044

07:40:40 Jul 08 '00

1525

31

423781

5088422

Going to take temperature measurements in flow area.

07:42:30 Jul 08 '00

1525

35

425615

5087275

Max temp anomaly 2.5 degrees C

07:44:10 Jul 08 '00

1525

29

423780

5088420

Taking temp. at another flow site: max temp 8.2

07:45:50 Jul 08 '00

1525

29

423780

5088420

Fix x=423780 y=5088420

07:46:50 Jul 08 '00

1525

30

423779

5088422

Fluid sampler: gas piston. T1=7.5; T2=5.9; Tmax=8. Start time: 07:50 Stop time: 07:51. Vol filtered 150 ml. OldWorms x=423780 y=5088420.

R547-HFS-4-0001

Evans

Butterfield/ Lilley

07:53:10 Jul 08 '00

1525

30

423784

5088417

Fluid sampler: unfiltered fluid (bag). T1 6.1; T2 5.4; Start time: 07:54:14; Stop time: 07:57. Restarting 07:57:43; Stop 08:00:25. Vol 700 ml. Tmax 8.1. White floc in crack. OldWorms x=423780 y=5088420.

R547-HFS-8-0002

Butterfield/ Huber/ Mehta/ Larson

08:01:02 Jul 08 '00

1525

29

423784

5088417

Changed Tunnicliffe tape.

08:05:02 Jul 08 '00

1525

22

423780

5088420

MTR 4128 DEPLOYED at sampled site.

08:04:52 Jul 08 '00

1525

24

425623

5087278

MTR 4128 at OldWorms.

R547-045

08:05:32 Jul 08 '00

1525

19

423780

5088420

Photos 17, 18, and 19 taken at site where MTR 4128 was deployed.

08:12:02 Jul 08 '00

1524

20

423769

5088424

MTR maintenance in progress.

08:12:52 Jul 08 '00

1524

18

423769

5088432

Headed to Mkr-N3; range 200m, bearing 225

08:17:02 Jul 08 '00

1524

246

423791

5088419

Moving ship to Mkr-N3.

08:36:14 Jul 08 '00

1527

243

423710

5088332

Ship positioned over Mkr-N3

08:39:44 Jul 08 '00

1526

259

423706

5088330

Reddish (iron oxide?) sedimented region near N3

08:41:44 Jul 08 '00

1527

280

423089

5089052

various types of Fe-oxides based on color and vent fish on our way to N3

R547-046

08:43:44 Jul 08 '00

1526

250

425558

5087275

N3 site

R547-047

08:43:14 Jul 08 '00

1526

236

425558

5087275

Mkr-N3 spotted. White microbial mats, tube worms, scale worms, and purple protozoan mats. Photo 20, 21 taken here. Shimmery flow.

08:44:14 Jul 08 '00

1527

241

425558

5087275

Shimmery flow at N3.

R547-048

08:46:44 Jul 08 '00

1528

231

423645

5088286

Temperature measurement being taken at N3. Max temp 18.5 degrees.

08:54:26 Jul 08 '00

1528

233

423639

5088277

fluid sampler at Mkr-N3

R547-049

08:59:36 Jul 08 '00

1528

234

423645

5088283

Mkr-N3

R547-050

08:53:24 Jul 08 '00

1528

233

423646

5088293

Fluid sampler: unfiltered water (bag 9). T1: 17.0 T2: 13.0; Start time: 08:53; Stop time: 09:00 Vol=698 ml. Max temp: 20.2. Mkr-N3 x=423637 y=5088278.

R547-HFS-9-0003

Butterfield/ Huber/ Mehta/Larson

09:00:36 Jul 08 '00

1528

234

423644

5088285

Fluid sampler: gas piston. T1:18.0 T2:136.0 Start time: 09:01 Stop time: 09:04 Vol 150ml Max temp 20.2 degrees. Mkr-N3.

R547-HFS-24-0004

Evans

Butterfield/Lilley

09:08:46 Jul 08 '00

1528

234

423641

5088281

scale worms at Mkr-N3

R547-051

09:05:46 Jul 08 '00

1528

233

423642

5088281

Fluid sampler: XRF filter T1:16.0 T2: 12.0 Start time: 09:06 Stop time: 09:10 Max temp: 18.8 Vol=500 ml. Mkr-N3.

R547-HFS-1-0005

Gendron

09:11:36 Jul 08 '00

1528

233

423643

5088283

Getting ready to deploy 2 MTRs at Mkr-N3.

09:11:46 Jul 08 '00

1528

233

423643

5088283

Mkr-N3

R547-052

09:11:56 Jul 08 '00

1528

233

423643

5088283

ROPOS fix (cluster) x=423642 y=5088282

09:12:16 Jul 08 '00

1528

232

423642

5088280

Mkr-N3

R547-053

09:13:26 Jul 08 '00

1527

251

423642

5088280

microbial mat at Mkr-N3.

R547-054

09:14:36 Jul 08 '00

1528

263

423642

5088280

Getting ready to deploy MTR 3176.

09:14:36 Jul 08 '00

1528

263

423642

5088280

MTR 3176 at Mkr-N3.

R547-055

09:15:26 Jul 08 '00

1528

266

423642

5088280

Mkr-N3

R547-056

09:16:36 Jul 08 '00

1528

265

423642

5088280

MTR 3176 at Mkr-N3.

R547-057

09:19:38 Jul 08 '00

1528

246

423642

5088280

vent fish at Mkr-N3.

R547-058

09:23:08 Jul 08 '00

1528

252

423642

5088280

MTR 3045 DEPLOYED at Mkr-N3

09:23:38 Jul 08 '00

1528

263

423642

5088280

MTR 3045 at Mkr-N3

R547-059

09:24:58 Jul 08 '00

1528

256

423642

5088280

Fiddling with MTR 3045.

09:25:08 Jul 08 '00

1528

253

423642

5088280

Photo #22 of MTR 3045.

09:25:48 Jul 08 '00

1528

250

423642

5088280

Photo #23 of Mkr N3 and the MTRs there.

09:26:38 Jul 08 '00

1527

251

423642

5088280

Photo #24, 25 of Mkr N3.

09:29:18 Jul 08 '00

1528

7

423640

5088276

Highlights on.

09:30:28 Jul 08 '00

1528

37

425550

5087307

Photo #26 and #27 of Mkr-N3.

09:31:48 Jul 08 '00

1527

129

423639

5088279

Photo #28 Lots of mat, blue protist stuff, big collapse, as we are leaving N3. Moving into areas of less flow now.

09:32:38 Jul 08 '00

1526

161

423639

5088279

Drive south/southwest until we leave the stained area, then will move the ship to go to Nascent.

09:33:08 Jul 08 '00

1524

185

423647

5088292

Stopping highlights

09:34:38 Jul 08 '00

1524

217

423645

5088278

930 m, bearing 160 degrees to Nascent Vent