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Dive
R487 |
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Dive
Plan: Same as for R485 and R486. Primary objective is to obtain vent fluids/filtered
samples along eruptive line. Will begin at Mkr-33 and end at Milky Vent
area. Suction sampling will also be done at some of these sites. |
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Elevator
wil be recovered (weather permitting) sometime during the dive. |
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Note:
Nav fixes not edited in the logs. All fixes were logged, regardless of accuracy.
Use the dive plots to determine actual positions. |
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UTC
Hour |
Min |
Depth (m) |
Sub Hdng (deg) |
UTM X |
UTM Y |
Comments |
Frmgrbs, Photos, Samples |
15 |
32 |
1 |
133 |
421199 |
5087374 |
ROPOS in the water. |
|
15 |
43 |
85 |
256 |
421199 |
5087374 |
test |
Dive 487-1 |
17 |
6 |
1519 |
87 |
424091 |
5087593 |
On the bottom. At Mkr-33. Viewing osmosampler. |
Photos 2 - 5 |
17 |
7 |
1521 |
39 |
424091 |
5087593 |
Osmo Sampler at Mkr-33 |
Dive 487-2 |
17 |
8 |
1521 |
126 |
424091 |
5087593 |
Taking pictures of Mkr-33. Right at the marker - viewing
bacteria trap 40 and green/copper osmosampler. Took Photos 7 - 10 |
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17 |
10 |
1524 |
231 |
423856 |
5087075 |
Checking out ROPOS gauges - making sure all is ok. Hydraulic
fluid down, talk of going back to the cage. |
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17 |
12 |
1503 |
227 |
424345 |
5087694 |
Slowly going back to cage. |
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17 |
16 |
1492 |
176 |
423852 |
5087102 |
Taking a plume sample with the HFS - filter #12. |
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17 |
18 |
1482 |
206 |
423852 |
5087102 |
ROPOS in the cage. Staying here to take some samples of
the plume. Plume filter sample for DNA with HFS - starting filter #12. |
HFS12_plume _R487-1 |
17 |
23 |
1475 |
178 |
424653 |
5086900 |
Going to stay here for around 15 minutes to take a few
samples. Still pumping HFS filter #12. |
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17 |
30 |
1475 |
226 |
424860 |
5087225 |
Something in water column - a jellyfish I think. |
Photo-13 |
17 |
32 |
1474 |
116 |
423852 |
5087100 |
Stopped pumping filter #12 - 1502 ml pumped. Starting
to pump filter #15 on HFS. |
HFS15_plume _R487-2 |
17 |
44 |
1475 |
256 |
423869 |
5087113 |
Stopped pumping HFS filter #15 - pumped 1050 ml. |
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17 |
45 |
1475 |
301 |
423890 |
5087611 |
Starting HFS bag sample #17. |
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17 |
51 |
1476 |
300 |
425149 |
5086724 |
Stopped pumping #17 - 650 ml pumped. Start pumping HFS
#19 - bag with filter. |
HFS19_plume _R487-4 |
17 |
58 |
1475 |
207 |
424342 |
5087672 |
Stopped pumping #19 - 675 ml. Note that the flush pump
was not on for the first half of the sample. Start to sample HFS bag #16
with no filter. |
HFS16_plume _R487-5 |
18 |
2 |
1475 |
226 |
423937 |
5087439 |
Good nav. x=3846, y=7105 - location of plume fluid sampling.
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18 |
5 |
1474 |
212 |
424117 |
5087620 |
Finished pumping #16 - 598 ml pumped. Start pumping HFS
filter #3, for sulfur. |
HFS3_plume _R487-6 |
18 |
9 |
1477 |
290 |
423859 |
5087130 |
Fluid volume was not recording for a few minutes - now
working again. |
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18 |
19 |
1475 |
227 |
424340 |
5087684 |
Stopped pumping filter #3 - 130 ml pumped. Going to move
the ship to a position over Cloud Vent to sample particulates in plume. |
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18 |
27 |
1476 |
217 |
425095 |
5087131 |
The Queen says BAD FIXES! |
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18 |
28 |
1476 |
248 |
423872 |
5087114 |
Moving towards Cloud - still no good fixes. |
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18 |
34 |
1476 |
205 |
423874 |
5087096 |
We are about half way to Cloud. |
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18 |
39 |
1476 |
275 |
423882 |
5087105 |
Ship finished moving - waiting for the position to settle. |
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18 |
40 |
1474 |
257 |
423900 |
5087099 |
Good fix at x=3898, y=7110. Between Mkr-N4 and Mkr-N6. |
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18 |
42 |
1474 |
202 |
424440 |
5086790 |
x=3900, y=7110 - good fix on ROPOS in cage. We are stopping
here to take fluid and gas tight samples. We are flushing the gas line now. |
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18 |
44 |
1476 |
205 |
423907 |
5087096 |
Right over Mkr-N6. |
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18 |
46 |
1474 |
352 |
423900 |
5087100 |
The gas line in flushed. Preparing to trigger port gas
tight - triggered port GTB at 18:47. |
gtb_plume _R487-7 |
18 |
48 |
1475 |
205 |
423897 |
5087098 |
Going to trigger the gas piston on the HFS, pump position
#23. Starting to pump. Good fix x=3901, y=7111. |
HFS23_plume _R487-8 |
18 |
53 |
1476 |
280 |
423894 |
5087116 |
Triggering piston #20. |
HFS20_plume _R487-9 |
19 |
0 |
1474 |
198 |
423902 |
5087123 |
Sample R487-9 finished. 730 ml. |
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19 |
3 |
1476 |
222 |
423936 |
5087610 |
X = 3908, Y = 7109 |
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19 |
5 |
1474 |
278 |
423898 |
5087100 |
Filter #21 for sulfur analysis started at 19:01. |
HFS21_plume _R487-10 |
19 |
10 |
1476 |
127 |
424385 |
5087640 |
X = 3902, Y = 713. Sample #21 finished. Piston sample
#2 started. |
HFS22_plume _R487-11 |
19 |
17 |
1476 |
202 |
424442 |
5086790 |
Sample piston #2 finished. Start bag sample #18 with filter.
Still at Cloud Vent. |
HFS_plume _R487-12 |
19 |
24 |
1475 |
267 |
423902 |
5087115 |
Sampler #18 finished. 60 ml. |
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19 |
25 |
1476 |
331 |
424385 |
5086607 |
Sampler #7 with filter started. |
HFS7_plume _R487-13 |
19 |
29 |
1474 |
136 |
423907 |
5087096 |
#7 finished. 41 ml. |
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19 |
29 |
1475 |
140 |
424444 |
5086797 |
Sampler #2 with filter started. |
HFS2_plume _R487-14 |
19 |
33 |
1476 |
323 |
423898 |
5087098 |
Sampler #2 finished. Ready to come to surface. Will take
samples on the way up. |
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19 |
35 |
1474 |
285 |
423904 |
5087099 |
Starting integrated bag sampler #1 during rise through
the plume because it is "fun" (Butterfield) |
HFS11_plume _R487-15 |
19 |
44 |
1254 |
274 |
423910 |
5087482 |
Stopped sampler at 19:41. Continuing to surface. |
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20 |
32 |
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ROPOS on deck. |
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Dive
summary: Hydraulic failure shortly after ROPOS reached bottom. ROPOS put
back into its cage from where it sampled the plumes at about 1475 m depth
above Mkr-33 Vent and Cloud Vent. Returned to surface for repairs. |
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