Preface The expedition ARK XIX/3 with the German icebreaking RV ...

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their equipment, because first station work was scheduled for the morning of the day after. Fig. A1-1: Cruise track of "Polarstern" from Brest to the Porcupine Seabight and Porcupine Bank during ARK XIX/3a. On the 3rd of June the first station work started. After a CTD profile was made, we deployed an underwater beacon at 1600 m water depth in order to calibrate our ultra short baseline navigation system "Posidonia". This system is necessary for precise - 5 -
positioning and navigation of the "Victor 6000" during the dives. In the afternoon the first two Multicorer stations were sampled. In the early morning of the next day at about 4 am "Victor 6000" was deployed for the first time during our expedition. At 1600 m water depth a multibeam echosounder survey along a deep water canyon started. However, after several hours of proper operation the signal of the underwater beacon necessary for positioning failed and had to be replaced by a spare part. In the meantime we worked on further video guided multicorer casts. In the early evening the ROV was sent back to the canyon and started its mission. The positioning system worked properly and the hired multibeam echosounder produced good data. During the morning the weather became as poor as predicted by the meteorologist onboard. Wind speed of about 8 Beaufort and a rough sea state forced us to recover the "Victor 6000" for safety reasons. At 1 pm an actual satellite photograph of our area showed us that it was unlikely to possibly deploy the ROV again within the next hours. Station work originally scheduled for the next days was therefore started. Work with the multicorer at various locations lasted the entire night. At one of the first the regular scientific lectures onboard, scientists from Belgium and Ireland reported on our next area of investigation the Belgica mound province. It was intended to carry out a second multibeam survey in that area at a specific mound location, the so called "Moira mounds". The weather became better during the night allowing us to undertake the microbathymetry survey over the "Moira mounds". At 11 am "Victor 6000" was deployed and the multibeam echosounder installed on the vehicle sent back good data on seabed structure and morphology. In the afternoon the wind speed increased considerably up to 7-8 Beaufort. The track lines surveyed by "Victor 6000" were rather close together requiring similar small scale navigation of the "Polarstern" at the surface. The combination of low speed through the water, high wind speed and changing the position of the vessel in an area less than 2 square kilometres caused some problems. For about three hours the ship operated therefore in a so called station keeping mode and the multibeam survey was interrupted. In the meantime a video inspection of the seafloor and the benthic communities living at about 1000 m water depth was carried out. At 9 pm the wind speed was much lower than before and we proceeded with the multibeam survey again shortly before being interrupted due to strong bottom currents which hampered the "Victor 6000". - 6 -
Page 1 and 2: Preface The expedition ARK XIX/3 wi
Page 3 and 4: B. 1 Cruise leg ARK XIX/3b: An intr
Page 5: The ARK XIX/3 expedition A. 1 Itine
Page 9 and 10: was followed to obtain video materi
Page 11 and 12: On Friday morning the 20 th of June
Page 13 and 14: Fig. A1-2: The working area of the
Page 15 and 16: "Polarstern" (actual air temperatur
Page 17 and 18: 6000" was still at depth "Polarster
Page 19 and 20: aseline navigation antennae which a
Page 21 and 22: Fig. A1-3: Entire cruise track of R
Page 23 and 24: At end of the leg pressure rising b
Page 25 and 26: The temperatures during the cruise
Page 27 and 28: Most frequent wind direction was so
Page 29 and 30: A. 3.1 High resolution seabed mappi
Page 31 and 32: On the other hand, the accuracy of
Page 33 and 34: The sampling campaign was also unde
Page 35 and 36: Hydrosweep DS2 is installed onboard
Page 37 and 38: Fig. A4.2-2: Normalized backscatter
Page 39 and 40: In addition to the micro bathymetry
Page 41 and 42: ackscatter value of -37.0dB, -38.9d
Page 43 and 44: athymetry and angular backscatter d
Page 45 and 46: A. 4.3 Sedimentary and hydrodynamic
Page 47 and 48: glacial periods. There is also evid
Page 49 and 50: Fig. A4.3.2-2: Visualisation of dif
Page 51 and 52: It seems that all the mounds along
Page 53 and 54: Visible calcareous fauna removed (b
Page 55 and 56: Fig. A4.3.3-2 Location of SAMS Phot
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Box Core Sample Log Sheet Station N
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A. 4.3.4 Influence of mound topogra
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A. 4.3.5 Photo lander deployment on
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- UMI data logger controlling a tra
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Fig. A4.3.5-3. Close-up view of the
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Lineated features are present NE of
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CARACOLE Cruise Report 30/07/2001 (
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intermediate nepheloid layers (Dick
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Fig. A4.4.1-2. Location of main stu
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A. 4.4.3 Biogeoprocesses along the
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in the database with the exact posi
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The areas with significant benthic
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predators and strong bottom current
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faunal distribution. Palaentologica
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ocks predate the last glaciation, s
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A. 4.4.6 Biological and geological
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Hovland M, Croker PF, Martin M (199
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Live fauna Sediments Live fauna and
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sites can subsequently be transport
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4) The NSOW has similar water mass
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0 100 200 300 400 500 600 700 800 P
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A. 4.8 Deep water coral ecology and
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and video observations made. On ret
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Fig. A4.8.2-2: This orange, planar
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Fig. A4.8.2-4: Feather-shaped alcyo
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Fig. A4.8.2-7: Top left) Yellow alc
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scour or demersal trawling. The gro
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survey at frequencies of 38, 70, 12
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"Belgica mounds" - Porcupine Seabig
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"Twin mounds" - Porcupine Bank 14°
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corals were alive, relatively abund
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Network Setup for Tests The setup f
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are only initial testings and much
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pressure produced as a consequence
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surrounded by elevated sediment fea
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B. 2 Microbathymetry on ROV "Victor
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Pitch correction Due to assembling
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Maps Complete area Håkon Mosby Mud
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B. 3 Geochemistry, geophysics and s
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Heat Flow HMMV 2m # # # # # # # # #
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Lat_dec. Lon_dec Name k T_0m PS64/s
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Temperature / Gravity Corer # GC9 #
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Table B3.2-1: Technical specificati
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Sound velocity: As the cores all co
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Fig. B3.3-1: Display of a 4 km long
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sediment cores varies between 166 t
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Fig. B3.4-1b: Lithological descript
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Fig. B3.4-1d: Lithological descript
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Fig. B3.4-1f: Lithological descript
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hydrotroilite and gas hydrate, this
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As an example, a echo sounder image
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B. 5 Biological investigations at t
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- How much methane is oxidized aero
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profiler). Bottom water samples hav
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the water column was measured using
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1 kg of tubeworms in wet weight. Th
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B. 5.2 Microscale analysis of the s
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Laboratory measurements Central sit
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O2, CO3-- (mM) Beggiatoa mats, 30/0
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Photograph of the sulfide oxidising
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Central area No measurements could
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the temperature profile showed adve
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B. 5.3 Methane in gas hydrate beari
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The deployments covered 3 (5) diffe
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flows at the Håkon Mosby Mud Volca
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The quality of the mosaics depends
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[2] Vincent AG, Pessel N, Borgetto
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### ( ) # ###### # ## # # # #### #
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References Milkov, A., Vogt, P., Ch
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ROV "Victor 6000" The ROV "Victor 6
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has spent in organising the coring
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A multiple corer was used to retrie
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At the position of the moorings a C
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Micro profiles of O 2 but also of p
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The current regime luff and lee sid
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2° 3° 4° N2 5° PS64/481 PS64/48
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station IRD archive liner bulk x-ra
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C. 4 Marine Geology Kukina, N. Majo
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2° 3° 4° 5° 6° PS64/481 79°20
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Appendix 1: List of samples for fut
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material via the Transpolar Drift t
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ounding processes as well. One poss
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The most frequent rock type is sand
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Eastern Greenland, Iceland and Scan
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C. 6 Debris on the seafloor at “H
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Results A summary of the results is
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enthic community are of crucial imp
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frame showed no obvious colonisatio
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subsamples (area of 400 - 800 cm 2
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using shipboard techniques - provid
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Tab C11-1: Stationlist of in situ m
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Tab. C11-2: In-situ measurements of
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Tab. C11-2: In-situ measurements of
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Climate models predict that global
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90 mean copepod densities/ 10 cm 2
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- Molecular phylogeny and phylogeog
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Species Stations Tmetonyx sp.1 326-
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was used to terminate and sample th
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openings of 45° at both sides the
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Station Date Time PositionLat Posit
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E. Participating institutes / compa
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Acronym Participants iSiTEC GmbH IS
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F. Participants F. 1 Participants A
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F. 2 Participants ARK XIX/3b Armand
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F. 3 Participants ARK XIX/3c Bauerf
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Preface The expedition ARK XIX/3 with the German icebreaking RV ...

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