Dive 550

UTC

Z(m)

Hdg

UTM X

UTM Y

Comments - Dive R550

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: Imagenex survey at the southern end of the previous Imagenex coverage. HFS sampling on '98 lava flow.

Bottom Time: JD193(7/11) 0156-1519

ROPOS has lifted off the deck. 22:05

22:06:32 Jul 10 '00

1

113

423790

5086606

ROPOS is in the water at the surface.

22:25:34 Jul 10 '00

3

161

423790

5086606

ROPOS is trying to troubleshoot a communication problem with the Fluid Sampler.

22:54:52 Jul 10 '00

3

149

423790

5086606

sub coming back up for a HFS cable check... lack of com

00:22:40 Jul 11 '00

1

178

423790

5086606

display of telemetry string has had a steady rhythm for ~15 min after change of HFS com cable and a lot of wiggling

00:36:18 Jul 11 '00

1

143

423790

5086606

sub is getting wet again

02:23:10 Jul 11 '00

1518

345

422751

5085059

start McLane pump on at 6 liters per minute

01:56:56 Jul 11 '00

1387

339

422797

5085102

circle approaching

R550-002

01:56:56 Jul 11 '00

1387

339

422797

5085102

or is it a shroom?

R550-003

01:58:20 Jul 11 '00

1385

257

422797

5085102

Aha! It's a German army helmet with medulla.

R550-004

0156 - 0158 mysterious jelly. Post-cruise wisdom: The jellyfish we observed was a Deepstaria enigmata, according to Verena.

02:28:34 Jul 11 '00

1519

2

422762

5085020

Actual time 2:23 McLane pump started @ 6 L/min during Imagenex Line 16, goal is a ~400 liter sample. Bag City area

R550-McLane-0001

Metaxas/ Tunnicliffe

02:29:46 Jul 11 '00

1518

140

422754

5085078

Getting ready to start Imagenex Line BC16

02:41:22 Jul 11 '00

1519

89

422800

5085096

Start of Imagenex line BC16, west to east.

02:46:58 Jul 11 '00

1519

88

422862

5085114

Verena's videotapes started.

03:36:22 Jul 11 '00

1515

91

423823

5085101

McLane pump stopped after sampling 400 litres.

03:56:22 Jul 11 '00

1525

92

424286

5085107

Eastern end of line 16 at 03:57: x=424290, y=5085096

03:59:22 Jul 11 '00

1526

118

424268

5085165

Start of line 15 at x=424268, y=5085165. Going from east to west.

04:38:58 Jul 11 '00

1514

273

423562

5085164

Changing Tunnicliffe tapes, putting in #2.

05:07:58 Jul 11 '00

1514

277

422842

5085164

End of line 15 at x=422834, y=5085166.

05:14:58 Jul 11 '00

1518

207

422828

5085225

Start of line 14 (BC) at position: x=422837, y=5085227 at time 5:19.

05:19:46 Jul 11 '00

1517

96

422839

5085216

Just came across a mysterious jelly? a few minutes ago - see frame grabs.

05:15:46 Jul 11 '00

1518

79

422818

5085196

close-up of mysterious jelly

R550-005

05:15:46 Jul 11 '00

1518

79

422818

5085196

Side of mysterious jelly

R550-006

05:15:46 Jul 11 '00

1518

79

422818

5085196

mysterious jelly

R550-007

05:15:58 Jul 11 '00

1518

45

422818

5085196

mysterious jelly

R550-008

05:15:58 Jul 11 '00

1518

45

422818

5085196

close-up of mysterious jelly

R550-009

05:16:10 Jul 11 '00

1517

348

422824

5085195

mysterious jelly

R550-010

05:16:22 Jul 11 '00

1518

249

422824

5085195

mysterious jelly

R550-011

05:16:34 Jul 11 '00

1517

207

422828

5085198

mysterious jelly?

R550-012

05:16:46 Jul 11 '00

1518

146

422828

5085198

close-up of mysterious jelly

R550-013

05:16:58 Jul 11 '00

1517

100

422821

5085200

Mystery jelly again

R550-014

05:36:10 Jul 11 '00

1513

100

423278

5085221

Right now we are over Bag City Vent, good 4 transponder fix: 423278, 5085221.

06:19:10 Jul 11 '00

1519

102

424290

5085215

EOL BC14 x=424310 y=5085214

06:45:58 Jul 11 '00

1513

272

423949

5085301

Changing Tunnicliffe tapes, putting in tape #3. Five photos were taken of the mysterious jelly.

06:23:34 Jul 11 '00

1520

272

424301

5085285

SOL BC 13 424295x, 5085279y

07:34:35 Jul 11 '00

1512

274

422866

5085278

End of line BC13

07:39:35 Jul 11 '00

1512

80

422872

5085348

Start of line BC12. 422878; 5085244

08:48:48 Jul 11 '00

1512

95

424056

5085345

Little medusa (?) on the left side (of course you can see it!)

R550-015

09:01:24 Jul 11 '00

1516

98

424310

5085336

EOL BC12 (east end).

09:05:24 Jul 11 '00

1516

9

424308

5085391

Changing Tunnicliffe tapes at 8:59, putting #4

09:10:00 Jul 11 '00

1516

272

424307

5085399

Start of line BC11

10:26:36 Jul 11 '00

1510

284

422902

5085410

EOL BC11 (west end).

10:31:36 Jul 11 '00

1512

78

422911

5085474

SOL BC10 (west end)

11:42:00 Jul 11 '00

1513

92

424291

5085458

EOL BC10 (east end).

11:47:36 Jul 11 '00

1515

295

424304

5085519

SOL BC9 (east end).

12:56:12 Jul 11 '00

1507

277

423124

5085528

Verena's tapes have been switched, now on tape 6.

13:04:12 Jul 11 '00

1513

277

422948

5085523

EOL BC9

12:41:54 Jul 11 '00

1513

79

424294

5085583

EOL BC8 (east end). End of Imagenex survey. Now transit to Mkr-33.

14:24:50 Jul 11 '00

1492

51

423687

5087725

Verena's videotapes off.

15:04:56 Jul 11 '00

1367

16

424102

5086356

Still transiting to Mkr-33. Fluid sampler's valve not responding. Bad news.

15:11:32 Jul 11 '00

1368

19

424043

5086558

ROPOS needs to be recovered.

15:15:44 Jul 11 '00

1375

16

424003

5086667

Ship stopped, ROPOS parking in the cage...

15:23:32 Jul 11 '00

1383

249

423987

5086823

ROPOS is in the cage. Coming up.

15:30:20 Jul 11 '00

1151

285

423972

5086832

ROPOS will be on deck in 30 minutes

16:08:22 Jul 11 '00

2

160

423767

5089430

ROPOS at the surface 1605

R550 Dive Summary: Imagenex survey BagCity area and north to join with southern portion of previous coverage (Lines BC8-BC16). Sample: McLane pump BagCity area. Saw huge pinkish mystery jelly, later determined to be Deepstaria enigmata. HFS problems so dive was aborted after Imagenex.