Sampling dive of the Nyegga pockmarks G11 and G12.
Pockmarks G11 and G12 surveyed in detail. Pockmarks G11, G12 and GG are similar geological stuctures with also similar-looking seeps.
Several active seeps sampled and documented at G11 and G12 (video observation of active seeps, PEP and CTD methane anomalies). Low strength of seepage, no gas flares. Abundant macrofauna. Numerous macrofauna and meiofauna samples collected. Large fauna diversity. Chemosynthetic species. An active seep site fully documented (at G11): macrofauna and meiofauna collected, chemical environment characterized, video-mosaicking completed,microbiological sampling done.
Two other active sites investigated for microbiological processes and chemical fluxes (one at G11, the other at G12 with MIC deployment).
Abundant carbonate crusts suggest large past emissions of methane in the water (When were carbonates formed?)
:
Nyegga,
Nyegga North,
G11,
PP-V3,
PP-V4,
PP-V8,
G12,
PP-V5,
Nyegga South,
| Date Heure |
Localité |
Description |
24/05/2006 12:35:24 |
Nyegga North |
ROV at seafloor, DVDs running, Tom and Karine on shift |
24/05/2006 12:39:06 |
G11 |
Crossing the site from W to E to go to point 0, where the planned dive track starts |
24/05/2006 12:53:12 |
G11 |
Arrived at point 0 |
24/05/2006 12:57:04 |
G11 |
Strong current from east moved the ROV from the planned track. We are going back to point 0. |
24/05/2006 12:58:48 |
G11 |
At point 0 again |
24/05/2006 13:01:05 |
G11 |
On the way to point 1 |
24/05/2006 13:01:49 |
G11 |
Difficulties to follow the line because of currents |
24/05/2006 13:03:42 |
G11 |
Arrived at point 1 |
24/05/2006 13:21:54 |
G11 |
We seem to have reached point 2 |
24/05/2006 13:23:22 |
G11 |
Point 2 from above |
24/05/2006 13:30:11 |
G11 |
Patch of bacterial mat (?) on the northern flank of point 2 |
24/05/2006 13:46:59 |
G11 |
PEP 01 on ICE 1 (hill in the east part of G11) |
24/05/2006 13:54:17 |
G11 |
We are going to make a hole with the manipulator to check the consistency of the sediment. |
24/05/2006 14:02:23 |
G11 |
The material we found just below the surface consists of soft aggregates of greyish flakes. |
24/05/2006 14:14:54 |
G11 |
BetaCam on the "pingo" |
24/05/2006 14:16:09 |
G11 |
view on the black spot with lasers |
24/05/2006 14:17:19 |
G11 |
on pingo |
24/05/2006 14:18:23 |
G11 |
going to do the T-probe (Francois) |
24/05/2006 14:20:48 |
G11 |
measured water temperature: -0.4 to -0.7 °C before calibration |
24/05/2006 14:27:26 |
G11 |
LTR 01 (T-probe, Francois), no temperature anomaly measured in the pingo ICE 1 |
24/05/2006 14:59:24 |
G11 |
the same pingo but viewed from the other side of the ridge (same side than STAtOIL video)\ncolonised by pogonophores\n |
24/05/2006 15:01:41 |
G11 |
gorgonocephalus + orange gasteopod |
24/05/2006 15:04:34 |
G11 |
moving along the top of the ridge, area of black sediment on the crest |
24/05/2006 15:15:13 |
G11 |
leaving the ridge and departing N towards point 3 |
24/05/2006 15:15:32 |
G11 |
on point 4. white spots will turn out to be bivalves |
24/05/2006 15:22:01 |
G11 |
GBT3 : sampling of bivalves on the east hill of G11 (south of ICE 1) |
24/05/2006 15:34:19 |
G11 |
moving to point 6, steep slope |
24/05/2006 15:36:24 |
G11 |
on point 6, muddy bottom |
24/05/2006 15:43:47 |
G11 |
Victor is too heavy, we cut off a bag of "lest" |
24/05/2006 15:47:45 |
G11 |
Very nice actiniaria and Ophiurids |
24/05/2006 15:52:55 |
G11 |
trying to fix basket that does not not close properly. |
24/05/2006 16:00:03 |
G11 |
whitish filaments on pogonophorae (on summit of ridge?) |
24/05/2006 16:01:05 |
G11 |
same whitish filaments |
24/05/2006 16:01:23 |
G11 |
beside a yellow commatule, whitish filaments |
24/05/2006 16:05:44 |
G11 |
debris flows and pogonophorae |
24/05/2006 16:09:28 |
G11 |
abundant debris flows |
24/05/2006 16:11:50 |
G11 |
moving from point 7 to point 8 |
24/05/2006 16:16:54 |
G11 |
near point 8, large pieces of dislocated tabular carbonate concretions |
24/05/2006 16:17:19 |
G11 |
ICE 2 displays many commatules gorgonocephales and white cnidarians |
24/05/2006 16:18:42 |
G11 |
luxuriant life on concretion on ICE2 |
24/05/2006 16:20:26 |
G11 |
zoom on fauna ICE2 |
24/05/2006 16:21:15 |
G11 |
zoom on fauna ICE2 |
24/05/2006 16:21:54 |
G11 |
zoom on fauna ICE2 |
24/05/2006 16:22:20 |
G11 |
Nice view of a gorgonocephalus |
24/05/2006 16:23:42 |
G11 |
we did not find Ice on Ice 2, but a lot of fauna |
24/05/2006 16:25:28 |
G11 |
PEP2 is done at the summit of ICE 2 |
24/05/2006 16:26:14 |
G11 |
leaving point 8 and starting to move to point 9 |
24/05/2006 16:34:25 |
G11 |
on point 10, the bottom is muddy |
24/05/2006 16:35:55 |
G11 |
white sea star on muddy bottom |
24/05/2006 16:37:44 |
G11 |
pingo ICE 3, covered with white biofilm |
24/05/2006 16:39:43 |
G11 |
same pingo |
24/05/2006 16:45:14 |
G11 |
taking a sample of the pingo, outside the whitish filaments |
24/05/2006 16:45:37 |
G11 |
very soft penetration, the pingo is made of nested pogonophorae |
24/05/2006 16:49:50 |
G11 |
GBT2 : Sampling pogonophorans of ICE 3 |
24/05/2006 16:58:52 |
G11 |
changing DVDs (set 2 to set 3), pogonophorans and now in GBT2 |
24/05/2006 17:00:14 |
G11 |
we have not touched the whistish filaments |
24/05/2006 17:00:46 |
G11 |
leaving the pingo |
24/05/2006 17:05:03 |
G11 |
PEP 3 at 1,5 m above the floor, near ICE3 |
24/05/2006 17:09:21 |
G11 |
near point 13 (ice 4?), diverse animals are present : cnidarians, dead gastropods, white filaments |
24/05/2006 17:12:03 |
G11 |
suddently a swarm of red amphipods |
24/05/2006 17:16:33 |
G11 |
moving towards point 12, still in the swarm of abundant amphipods |
24/05/2006 17:25:22 |
G11 |
cimetery of sabellidae |
24/05/2006 17:35:22 |
G11 |
PEP4 : on ICE 4 where the amphipods were, but they are now gone (0.8m above seafloor) |
24/05/2006 17:42:50 |
G11 |
clast and fauna |
24/05/2006 17:43:12 |
G11 |
clast and fauna |
24/05/2006 17:46:38 |
G11 |
ICE4 we are 7 m west from reported ice 4 position and there is a little crater |
24/05/2006 17:52:07 |
G11 |
on the south of ICE4 we survey dead sabellidae tubes |
24/05/2006 17:52:28 |
G11 |
ICE 4 is a small dome covered with pogonophoran tube, a new pingo discovered.. |
24/05/2006 17:56:46 |
G11 |
pogonophoran fields forever! |
24/05/2006 18:03:25 |
G11 |
Shilft Catherine and Karine |
24/05/2006 18:04:32 |
G11 |
Going to point 15 at 18m |
24/05/2006 18:07:27 |
G11 |
Big structure on the right side |
24/05/2006 18:09:04 |
G11 |
Arriving in a depression |
24/05/2006 18:17:25 |
G11 |
inside the depression between ICE1 and ICE5 |
24/05/2006 18:18:35 |
G11 |
concretions and grey-blue sediment spots |
24/05/2006 18:22:22 |
G11 |
slope, blocks, clasts? , and associated fauna |
24/05/2006 18:23:56 |
G11 |
looking the slope, with holes, orange gastropod, brown pogonophorans?, gorgona |
24/05/2006 18:35:27 |
G11 |
succession of small active areas |
24/05/2006 18:38:42 |
G11 |
PP V3 : Deposition of Marker on Vesicomyid field |
24/05/2006 18:43:41 |
PP-V3 |
mollusc shells |
24/05/2006 18:47:24 |
PP-V3 |
spot with bacterial filaments ? gastropods and pogonophorans |
24/05/2006 19:01:44 |
G11 |
summit westward from Ice 5, concretions ( chaos of large blocks) |
24/05/2006 19:07:25 |
G11 |
area with carbonate crusts, shells (or living bivalves?) and gorgonocephalus |
24/05/2006 19:16:48 |
G11 |
PEP5: on ICE5, 0.5 m above bottom. Molluscs (vesicomids?) field |
24/05/2006 19:29:45 |
G11 |
ASPI 1: on ICE5, vesicomids |
24/05/2006 19:51:44 |
G11 |
going down, a lot of amphipods |
24/05/2006 19:54:22 |
G11 |
small "pingo" (ice 6?). Same type of structure as Ice 1: small mound covered by brown material (filaments: pogoniporans?). small paspots of grey sediment |
24/05/2006 19:55:26 |
G11 |
another view of the same pingo |
24/05/2006 19:56:14 |
G11 |
PEP 6 on the small mound ICE 6 |
24/05/2006 20:22:00 |
G11 |
PP-V4 : Deposition of Marker : About 20 cm dimater black spot with a few white material,
external rim of gastropods, and around them a few black pogonophorans |
24/05/2006 20:36:40 |
PP-V4 |
chaos of large blocks which seem to be fractured crusts. Gorgonocephalus. |
24/05/2006 20:47:03 |
G11 |
cloud of amphipods |
24/05/2006 20:48:02 |
G11 |
blocks with associated fauna |
24/05/2006 20:54:48 |
G11 |
PEP 7: on ICE7 |
24/05/2006 21:03:13 |
G11 |
blocks (or fractured crusts) with associated fauna |
24/05/2006 21:30:28 |
Nyegga North |
Going to G12 pockmark |
24/05/2006 22:04:15 |
Nyegga North |
Shift taken over by Tom and Anna |
24/05/2006 22:05:40 |
G12 |
Starting exploration of G12. |
24/05/2006 22:11:57 |
G12 |
Some black patches and possibly bacterial mats in between fields of pogonophora on top of the northern ridge/summit of G12. |
24/05/2006 22:13:49 |
G12 |
Patches of bacterial mats, but surfaces too uneven for in-situ measurements. Point marked in GIS as 'bacterial mats'. |
24/05/2006 22:39:33 |
G12 |
Reached the southern summit of G12. It's covered with blocks of carbonate crust. There are less dark patches than on the northern ridge. |
24/05/2006 22:48:09 |
G12 |
Making a large turn to return to the first bacterial mat site |
24/05/2006 23:26:55 |
G12 |
Exploring the southern flank of G12. |
24/05/2006 23:52:49 |
G12 |
Occurence of dark patches and bacterial mats seems to be limited to the summits. |
25/05/2006 00:07:45 |
G12 |
On the way to bacterial mat point in order to start sampling. |
25/05/2006 00:20:13 |
G12 |
Reached bacterial mat point, starting with water sampling. |
25/05/2006 00:29:43 |
G12 |
PEP 8, directly above dark patch, on the center of G12 depression, as CT1) |
25/05/2006 00:40:12 |
G12 |
trying to take the first push core at the same spot, but the arm of the ROV is too short, so we have to move the ROV and wait until the water is clear again. |
25/05/2006 00:52:43 |
G12 |
CT 1 black patch, on the center of G12 depression (as PEP8) |
25/05/2006 00:53:08 |
G12 |
Sediment is compressed quite a bit during sampling |
25/05/2006 01:10:53 |
G12 |
Next sampling locatrion, 5-10 m eastward |
25/05/2006 01:14:26 |
G12 |
PEP 9, black spot surrounded with gastropods, on the center of G12 depression (as CT2) |
25/05/2006 01:25:36 |
G12 |
CT2, black spot surrounded by many gastropods, on the center of G12 depression (as PEP9) |
25/05/2006 02:00:47 |
G12 |
problems with insink, fixed too well, need to cut it open |
25/05/2006 02:24:55 |
G12 |
Insink XI taken from bacterial mat, but core was too short. Pushed it up with more coring on pogonophora |
25/05/2006 02:37:39 |
G12 |
InSInk X II taken on another bacterial mat, same procedure as, with InSInk X I |
25/05/2006 02:54:02 |
G12 |
insink X1 started injection |
25/05/2006 03:08:20 |
G12 |
Insink X2 started injection |
25/05/2006 03:13:45 |
G12 |
CT3 in the center of the G12 depression |
25/05/2006 03:29:40 |
G12 |
DVD changed, set 8 |
25/05/2006 03:38:13 |
G12 |
ASPI 2: gastropods, associé a CT1et CT2 |
25/05/2006 04:03:02 |
G12 |
CT4 collecting grey sediment |
25/05/2006 04:08:00 |
G12 |
CT4 collected core (half of the tube) |
25/05/2006 04:11:51 |
G12 |
going to another area looking for bacterial mat |
25/05/2006 04:39:20 |
G12 |
PEP10, 10 cm above bacterial mat and Thiotrix-like in back ground |
25/05/2006 04:49:01 |
G12 |
CT5 sampling of white bacterial mat |
25/05/2006 05:06:29 |
G12 |
CT5 white bacterial mat on the top. sediment in less than 1/3 of the core |
25/05/2006 05:20:42 |
G12 |
CT6 core sampling of disturbed sediment |
25/05/2006 05:22:19 |
G12 |
CT6 disturbed sediment |
25/05/2006 05:26:16 |
G12 |
look like thiotrix filaments |
25/05/2006 05:41:42 |
G12 |
ASPI 3 : gasteropods, thiothrix filament and shrimps |
25/05/2006 05:50:45 |
G12 |
laser measurment of gasteropode field |
25/05/2006 05:51:24 |
G12 |
Aspi 3 area of sampling with laser |
25/05/2006 05:56:21 |
G12 |
on going to another bacterial spot |
25/05/2006 06:18:58 |
G12 |
grey sediment probably covered by bacterial mat |
25/05/2006 06:19:55 |
G12 |
CT7 sampling of grey sediment with possible bacterial mats (Corer broken) |
25/05/2006 06:32:48 |
G12 |
CT8 core sampling of grey sediment |
25/05/2006 06:37:56 |
G12 |
push core CT7 retrieved, but can not be closed anymore, probably the sample will flush away |
25/05/2006 06:39:26 |
G12 |
push core 7 which is broken |
25/05/2006 06:47:23 |
G12 |
next bacterial mat |
25/05/2006 06:52:41 |
G12 |
CT9 : taking push core |
25/05/2006 07:12:10 |
G12 |
CT10 : push core broken |
25/05/2006 07:20:57 |
G12 |
next bacterial mat |
25/05/2006 07:25:57 |
G12 |
PEP 11 above bacterial mat |
25/05/2006 07:32:40 |
G12 |
Beginning of T-probe (LTR02) |
25/05/2006 07:46:51 |
G12 |
T-probe (LTR02) : 1 cm in bacterial mat |
25/05/2006 08:23:42 |
G12 |
PEP 12 at microbial mat Thiotrix-like |
25/05/2006 08:31:30 |
G12 |
CT 11 at microbial mat |
25/05/2006 08:44:31 |
G12 |
CT 12, at bacterial mat just next to place where CT 11 was taken |
25/05/2006 08:56:54 |
G12 |
End of sampling on G12, we are now looking for a place where to put the MIC mooring n°2 |
25/05/2006 09:00:01 |
G12 |
top of mount (with small bacterial mats), high density of shrimps in water column |
25/05/2006 09:11:17 |
G12 |
large bacterial mat, but too steep to take the profile with MIC |
25/05/2006 09:12:14 |
G12 |
small crater on top of mount (with bacterial mat), deposition of MARKER PP-V5 |
25/05/2006 09:26:49 |
G12 |
good spot for profiler (MIC 50*50 cm) |
25/05/2006 09:29:09 |
G12 |
PEP 13 above microbial mat |
25/05/2006 09:36:26 |
G12 |
army of shrimps above good site for MIC |
25/05/2006 09:41:54 |
G12 |
PP-V5 : placed marker successfully (PP-V6 was stiked to PP-V5, and was recovered) |
25/05/2006 09:55:52 |
PP-V5 |
start of DVD's 11 |
25/05/2006 10:06:00 |
Nyegga North |
Starting to move towards PP-V4 (point 22on G11) : shift: Karine, Ann, J Claude |
25/05/2006 10:38:54 |
G11 |
one Ctenophore (Venus belt) is passing in front of the main camera |
25/05/2006 10:51:32 |
G11 |
preparing of mosaic square between PP-V4 (vesicomyds) and PP-V3 (pogonophorans)
in order to cover au surface of 25 m2 |
25/05/2006 11:00:28 |
G11 |
beginning of mosaic (MOZA1) |
25/05/2006 11:05:41 |
G11 |
degazing on bottom |
25/05/2006 11:20:53 |
G11 |
beginning of profile 3 |
25/05/2006 11:30:17 |
G11 |
beginning of profile 4 |
25/05/2006 11:38:39 |
G11 |
beginning of profile 5 |
25/05/2006 11:47:41 |
G11 |
beginning of profile 5 (bis) |
25/05/2006 11:54:20 |
G11 |
beginning of profile 6 |
25/05/2006 11:58:23 |
G11 |
beginning of profile 7 |
25/05/2006 12:07:58 |
G11 |
beginning of profile 8 |
25/05/2006 12:12:42 |
G11 |
come back to the north by profil 9 |
25/05/2006 12:19:20 |
G11 |
beginning of profile 10 |
25/05/2006 12:25:46 |
G11 |
new profile 11 |
25/05/2006 12:32:20 |
G11 |
beginning of profile 12 |
25/05/2006 12:38:09 |
G11 |
come back by profile line 13 |
25/05/2006 12:46:43 |
G11 |
begginning of profile line 14 |
25/05/2006 12:53:36 |
G11 |
beginning of line 15 (to the north) |
25/05/2006 13:06:13 |
G11 |
beginning of line 16 |
25/05/2006 13:11:34 |
G11 |
beginning of line 20 (south to north) (pb with the regularity of the line) |
25/05/2006 13:23:15 |
G11 |
come back to PPV4 navigation (recalage estime) |
25/05/2006 13:44:04 |
G11 |
new departure line 21 |
25/05/2006 13:55:07 |
G11 |
beginning of profile 22 |
25/05/2006 14:05:16 |
G11 |
beginning of line 23 |
25/05/2006 14:17:21 |
G11 |
beginning of line 24 |
25/05/2006 14:24:38 |
G11 |
beginning of line 25 |
25/05/2006 14:28:40 |
G11 |
end of line 25 and mosaic (MOZA 1) |
25/05/2006 14:31:43 |
G11 |
going to elavator 1 to change equipment |
25/05/2006 17:16:18 |
G11 |
End of changing the equipment from Victor basket to Elevator,
during the operation the Blade Corers fell down and
CL5 was closed and unusable for further samplings. |
25/05/2006 17:20:25 |
G11 |
going to PPV4 |
25/05/2006 18:29:07 |
G11 |
PPV4 is found, It was difficult to find because ship moved and BUC was shifted of 15m toward 150° |
25/05/2006 18:46:55 |
G11 |
PEP 14 in the center of the bacterial mat of PPV4 |
25/05/2006 18:48:14 |
G11 |
PEP 15 on the snails of PPV4 |
25/05/2006 18:50:13 |
G11 |
PEP 16 second PEP on the snails |
25/05/2006 18:52:46 |
G11 |
PEP 17 is the third PEP on the snails of PPV4 |
25/05/2006 18:56:35 |
G11 |
PEP 18 is the first PEP on the Pogonophorans of PPV4 |
25/05/2006 18:59:54 |
G11 |
PEP 19 is the second PEP on the Pogonophorans of PPV4 |
25/05/2006 19:01:12 |
G11 |
Lasers measure the distace of 15 cm between the PEP 19 and the edge of the bacterial mat |
25/05/2006 19:13:27 |
G11 |
CT13 is the first CT east to the pogonophorans |
25/05/2006 19:48:43 |
G11 |
6 CT are set in the Pogonophorans of PPV4:
CT 13, 14, 15, 16, 17, 18, 19 (13 is the hole) and
the others are placed in increasing order counter-clockwise. |
25/05/2006 20:04:52 |
G11 |
We add 3 CT in the frontier area, where the snails are : CT 19, 20, 21 |
25/05/2006 20:10:24 |
G11 |
CT 22 is in the center of the bacterial mat of PPV4 |
25/05/2006 20:11:08 |
G11 |
All CT (except CT13) in place at PPV4 |
25/05/2006 20:14:57 |
G11 |
CT 18 is totally full in pogonophorans at PPV4 |
25/05/2006 20:17:20 |
G11 |
CT 17 is also full in pogonophorans at PPV4 |
25/05/2006 20:19:18 |
G11 |
CT 22 is half full , it is coming from the central area of the bacterial mat at PPV4 |
25/05/2006 20:21:56 |
G11 |
CT 19 is also nearly full in gastropods at PPV4 |
25/05/2006 20:24:13 |
G11 |
CT 16 is nearly full in pogonophorans at PPV4 |
25/05/2006 20:25:55 |
G11 |
CT 20 is 2/3 full in gastropods at PPV4 |
25/05/2006 20:29:23 |
G11 |
CT 21 is nearly empty in gastropods at PPV4 |
25/05/2006 20:35:26 |
G11 |
CT 15 is half full in pogonophorans at PPV4 |
25/05/2006 20:39:14 |
G11 |
CT 14 is 3/4 full with a clear oxydized superficial zone on the black deeper layer in pogonophorans at PPV4 |
25/05/2006 20:42:11 |
G11 |
The area PPV4 after the 10 pushcores |
25/05/2006 20:44:36 |
G11 |
We are preparing Aspi 4 to take the small snails of PPV4 |
25/05/2006 20:48:52 |
G11 |
ASPI 4 : We have slurped a surface area of 10x15 cm at PPV4 |
25/05/2006 20:56:17 |
G11 |
CL7 in the Pogonophorans of PPV4 east to the central spot of bacterial mat |
25/05/2006 21:08:01 |
G11 |
CL6 in the Pogonophorans of PPV4 and the shrimp is coming closer to sees what |
25/05/2006 21:14:53 |
G11 |
CL8 is the third CL on the Pogonophorans of PPV4, taken north to the bacterial mat. |
25/05/2006 21:20:32 |
G11 |
We are returning to the elevator with the four CL. The elevator is located 90 m north from here,
and we will take the big CL for another sampling. |
25/05/2006 21:41:00 |
G11 |
To put the CL basket back in the elevator is very tricky |
25/05/2006 21:46:07 |
G11 |
To take the big GCL from the elevator is not easier! |
25/05/2006 22:02:13 |
G11 |
We are moving towards point 17 where there is a nice Pingo to sample (seen at 10:03) which is south, cap 188 at 75 m distance. |
25/05/2006 22:47:31 |
G11 |
We couldn't find the same Pingo but we found another pingoe close to the point 17,
but probably different from the one we saw before (10:03) |
25/05/2006 22:49:08 |
G11 |
A nice view of the area we will sample with the CLG1 |
25/05/2006 22:52:27 |
G11 |
CLG1 in place in the Pingoe |
25/05/2006 23:01:44 |
G11 |
CLG1 full of sediment |
25/05/2006 23:11:24 |
G11 |
ASPI 5: on pingoe, with CLG1 beeing back in the hole in order not to disturb
the environment before slurping pogonophorans. |
25/05/2006 23:27:20 |
G11 |
going to the elevator |
25/05/2006 23:37:56 |
G11 |
arriving on the elevator, putting the CLG inside |
25/05/2006 23:50:24 |
G11 |
going to site PP V3 vesicomyd field |
26/05/2006 00:10:00 |
G11 |
Arriving on PPV3 vesicomyd field |
26/05/2006 00:37:50 |
G11 |
Starting to fill in PBT 3 with bivalves |
26/05/2006 01:05:16 |
G11 |
PBT3 : living vesicomyids PPV3 but the box was open and empty when arriving at the surface. |
26/05/2006 01:53:06 |
G11 |
ASPI 6 : on living vesicomyids PPV3 |
26/05/2006 02:03:44 |
G11 |
ASPI 7: on living vesicomyids PPV3 |
26/05/2006 02:10:00 |
G11 |
INCONNU: Two shrimps found in the ROV CTD pipe |
26/05/2006 02:35:39 |
G11 |
Transect to point 2, for sampling of Insink and 2 CT |
26/05/2006 02:42:58 |
G11 |
reached top of ICE 1, will sit down for sampling |
26/05/2006 02:45:52 |
G11 |
first bacterial mat spot selected for sampling |
26/05/2006 02:59:27 |
G11 |
CT23 sampling (corer broken) on top of ICE1 |
26/05/2006 03:25:07 |
G11 |
we changed to another spot, because the one chosen for CT23 was too hard |
26/05/2006 03:26:52 |
G11 |
CT24 taken in new spot on top of ICE1 |
26/05/2006 04:02:34 |
G11 |
Insink 5 taken |
26/05/2006 04:04:57 |
G11 |
X5 in place |
26/05/2006 04:13:18 |
G11 |
Attempt for X6 but it did not work |
26/05/2006 04:48:33 |
G11 |
new spot found for Insink X6 |
26/05/2006 04:50:18 |
G11 |
Insink X6 taken |
26/05/2006 04:53:26 |
G11 |
X6 in place |
26/05/2006 04:57:57 |
G11 |
Insink X5 and X6 released |
26/05/2006 05:20:00 |
G11 |
shift Cath P. and JPaul F. Geological survey and rock sampling |
26/05/2006 05:24:02 |
G11 |
GBT11 : bottom of caldera, fragment of crust being sampled, 272-CC1 |
26/05/2006 05:31:51 |
G11 |
small clasts in the solft sediment of the center of the caldera |
26/05/2006 05:38:12 |
G11 |
soft sediment with dead and alive sabellidae,small clasts and carbonate crusts fragments |
26/05/2006 05:42:57 |
G11 |
taking sediment of central caldera with victor's grab |
26/05/2006 05:44:04 |
G11 |
GBT12 : sample 272-CC2 in central caldera : soft sediment with small clasts |
26/05/2006 05:57:54 |
G11 |
rock fragments on summit of ridge NW in pogonophora field |
26/05/2006 06:01:03 |
G11 |
PANIER 1 : sample 272-CC3 which is a clast, rock fragments on NW ridge summit |
26/05/2006 06:04:04 |
G11 |
climbing the NW ridge |
26/05/2006 06:06:18 |
G11 |
top of the hill, carbonate crust in dislocated pavement |
26/05/2006 06:07:44 |
G11 |
PANIER 2 : sample 272-CC4 on top of ridge |
26/05/2006 06:15:00 |
Nyegga North |
Elevator manipulation during almost 4 hours (Elevator was north of G11) |
26/05/2006 09:45:06 |
Nyegga North |
departure from the chain of the shuttle |
26/05/2006 09:46:02 |
Nyegga North |
lot of rock fragments (carbonate crusts) on the seafloor |
26/05/2006 09:49:04 |
Nyegga North |
circular enigmatic structure surrounded by fixed fauna |
26/05/2006 09:50:50 |
Nyegga North |
zoom on the circular structure : very hard substrate below superficial soft sediment,
it is a single massive "plaque" surrounded with faune (comatule, cnidaires, sponges). |
26/05/2006 09:52:21 |
Nyegga North |
50 cm mud pie |
26/05/2006 09:56:32 |
Nyegga North |
trying to take a piece of the hard structure |
26/05/2006 10:00:33 |
Nyegga North |
close up view of the fragment broken from the edge the circular structure |
26/05/2006 10:05:00 |
Nyegga North |
Going back to site G11 |
26/05/2006 10:23:32 |
G11 |
top of the ridge with white and black spots |
26/05/2006 10:25:00 |
G11 |
a pingo on the crest of the ridge with pogonophoran reef |
26/05/2006 10:25:44 |
G11 |
pingo with white spots = ICE 5 |
26/05/2006 10:29:46 |
G11 |
Very nice Pingo ICE5 |
26/05/2006 10:37:51 |
G11 |
PP-V7 in place on a nice Pingo (= ICE 5) |
26/05/2006 10:46:25 |
G11 |
going to PP-V4 in order to look for bubbles as observed previously by Ann |
26/05/2006 10:47:48 |
G11 |
problems with navigation |
26/05/2006 11:32:37 |
G11 |
Going 175 ° south to wait for the second elevator to go down |
26/05/2006 12:46:37 |
G11 |
ELEVATOR 2 is going to the water |
26/05/2006 13:27:50 |
G11 |
reaching the elevator 2 |
26/05/2006 13:45:26 |
G11 |
pull out MIK profiler from the Elevator |
26/05/2006 13:55:20 |
G11 |
new DVD 23 |
26/05/2006 13:59:10 |
Nyegga North |
leaving to site PP-VV5 |
26/05/2006 14:24:24 |
G12 |
zoom on MIC 1 |
26/05/2006 14:49:27 |
G12 |
conic mound with crater showing black and white spots |
26/05/2006 14:49:46 |
PP-V8 |
Crater is surrounded by pogonophorans with gastropods in the crater and white mats in the middle |
26/05/2006 14:55:56 |
PP-V8 |
Nice view of the crater on digital picture |
26/05/2006 14:56:26 |
PP-V8 |
site marked with PP-V8 : crater is about 60 cm |
26/05/2006 15:15:14 |
PP-V8 |
approaching elevator for taking out cores |
26/05/2006 16:48:18 |
PP-V8 |
moving to site of MIC 1 |
26/05/2006 16:57:29 |
G12 |
moving to another site to deploy MIC a second time |
26/05/2006 17:09:40 |
G12 |
on site of mic2 about 50 m to the nnw of G12 |
26/05/2006 17:15:26 |
G11 |
starting to move to crater on PP-V8 (G11) |
26/05/2006 17:29:31 |
PP-V8 |
reaching again crater site PP-V8 |
26/05/2006 17:45:31 |
G11 |
CT 25 (CT1 on the videos) in pogonophorans |
26/05/2006 17:54:50 |
G11 |
CT 26 (CT2 on the videos) in gastropods |
26/05/2006 18:06:59 |
G11 |
CT 27 (CT3 on the vidoe) in gastropods and pogonophorans |
26/05/2006 18:17:01 |
G11 |
CT 28 (CT4 on the video) in bacterial mats on black sediment |
26/05/2006 18:18:05 |
G11 |
CT 33 (CT9 on the video) in in the white part of the bacterial spot |
26/05/2006 18:20:38 |
G11 |
view of the five cores inside the bacterial spot |
26/05/2006 18:23:53 |
G11 |
CT 34 (CT10 on the video) in the black part of the bacterial spot |
26/05/2006 18:43:11 |
G11 |
CT 29 (CT 5 on the video) in a small bacterial mat black and grey, near the crater |
26/05/2006 19:27:27 |
G11 |
ASPI 8 on pogonophorans in the crater of PP-V8 |
26/05/2006 19:35:04 |
G11 |
leaving the site towards the north |
26/05/2006 19:40:31 |
G11 |
searching for another bacterial mat spot on the NE flank |
26/05/2006 19:48:24 |
G11 |
CT 30 (CT 6 on the video) in a bacterial mat spot within a pogonophoran mound close to the top of the hill (northern part) |
26/05/2006 19:53:44 |
G11 |
searching for a new bacterial spot for sampling |
26/05/2006 19:55:57 |
G11 |
various bacterial spot at the top of the hill |
26/05/2006 20:03:31 |
G11 |
CT 31 (CT 7 on the video) on bacterial mats on the top of the hill |
26/05/2006 20:09:58 |
G11 |
CT32 (CT 8 on the video) on a bacterial white spot |
26/05/2006 20:24:13 |
G11 |
leaving the site of coring to go to the MIC 2 profiler |
26/05/2006 20:34:25 |
G11 |
approach of the profiler MIC 2 and lift |
26/05/2006 20:40:23 |
G11 |
CT 35 (CT 11 on the video) Reference core near the MIC 2 The sea floor is always covered with rock fragments and sabellidae |
26/05/2006 21:31:35 |
G11 |
CT 36 (Ct 12 on hte video) Reference core near the MIC 1 site (PP-V5) |
26/05/2006 22:05:25 |
G11 |
tom on shift |
26/05/2006 22:06:13 |
G11 |
elevator is on deck and we have set course for the southern sites |
26/05/2006 23:09:45 |
Nyegga |
starting to see rock fragments, sponges, ..on intermedite spot before last pockmark |
26/05/2006 23:16:10 |
Nyegga |
carbonates and fauna at intermediate spot |
26/05/2006 23:17:57 |
Nyegga |
to the way to GG, numerous sabellidae on seafloor |
26/05/2006 23:21:42 |
Nyegga |
200 m north of GG |
26/05/2006 23:29:56 |
Nyegga |
starting to see numerous rock fragments on the seafloor |
26/05/2006 23:34:13 |
Nyegga |
100 m north of GG |
26/05/2006 23:36:10 |
Nyegga South |
approaching GG |
26/05/2006 23:43:06 |
Nyegga South |
lot of small sponges |
26/05/2006 23:47:41 |
Nyegga South |
hill with pogo |
27/05/2006 00:03:39 |
Nyegga South |
sampling bivalve shells at the base of the N inner escarpment |
27/05/2006 00:11:12 |
Nyegga South |
pogo to the SW of the crater |
27/05/2006 00:15:27 |
Nyegga South |
following the ridge anticlockwise |
27/05/2006 00:35:01 |
Nyegga South |
bacterial mats, filaments on carbonate crusts |
27/05/2006 00:39:28 |
Nyegga South |
site with snails and mats |
27/05/2006 00:49:04 |
Nyegga South |
eastern ridge summit, pogo, sabellidae, no white shells, |
27/05/2006 00:51:33 |
Nyegga South |
continuing on ridge, white shells yes, no pogo |
27/05/2006 00:54:24 |
Nyegga South |
moving on the ridge, a few microbial spots |
27/05/2006 00:55:39 |
Nyegga South |
moving on the ridge, crusts, small sponges, ... |
27/05/2006 01:00:10 |
Nyegga South |
northern ridge, nearly normal seafloor |
27/05/2006 01:02:02 |
Nyegga South |
north western ridge, nearly normal seafloor, sabellidae, locally with white shells |
27/05/2006 01:06:44 |
Nyegga South |
moving, pogo, ... |
27/05/2006 01:11:53 |
Nyegga South |
leaving GG and steaming to the escarpment |
27/05/2006 01:15:29 |
Nyegga South |
moving to the escarpment, lot of rock fragments, |
27/05/2006 01:19:44 |
Nyegga South |
on 5m conical relief, carbonate crusts, fauna, |
27/05/2006 01:25:29 |
Nyegga South |
arriving at the escarpment, slope ruoture, no evidence of fracturation, sedimented scarp |
27/05/2006 01:25:30 |
Nyegga South |
prélèvement pince en fin de plongée : position incertaine |
27/05/2006 01:26:16 |
Nyegga South |
end of dive |
BIOCEAN