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

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The current meter will be recovered in approximately one year from now. In the meantime they will analyse every current intensity and direction as well as salinity, temperature and density of the ambient water mass every 15 min for 20 sec.. Fig. A4.3.4-1: Lander and current meter locations Fig. A4.3.4-2. Current meter deployed on the "Galway mound" - 73 -
A. 4.3.5 Photo lander deployment on the "Galway mound" Roberts, M. Corals such as Lophelia pertusa and Madrepora oculata, both of which have widespread distributions in the NE Atlantic are commonly referred to as deep-water or cold-water corals. These terms distinguish them from tropical corals that are in large part restricted to shallow, well-lit waters and can develop to form tropical coral reefs. To date, the vast majority of scientific research has concentrated on the shallow-water tropical corals that often contain algal symbionts (zooxanthellae). The inaccessibility of deep-water azooxanthellate species means that little is known about their basic biology and inferences about their environmental sensitivity are often drawn from studies of shallow-water tropical zooxanthellate species. Historically, the greatest research effort on cold-water corals has been in the north-east Atlantic where one species, Lophelia pertusa, appears to be the most significant in terms of its occurrence in some areas as sizeable reef-like structures. Indeed, when compilations of its distribution are produced, most records of L. pertusa are from the north east Atlantic, probably reflecting the intensity of research work in this area (Roberts et al. 2003, Rogers 1999). However, recent results from the Porcupine Seabight show that the scleractinian fauna on some carbonate mounds is dominated not by L. pertusa but by M. oculata. In the last ten to fifteen years, hydrocarbon exploration and production in deeper shelf edge waters has driven discoveries of cold-water coral provinces. For example, in Norway Statoil’s Haltenpipe development project laid a pipeline through areas supporting cold-water coral reefs. These have been mapped (Hovland et al. 1994a) and several ROV surveys of the reefs and their megafaunal community completed while pipeline inspection work was carried out (Mortensen et al. 1995). In the UK, a joint industry wide area environmental survey of the Atlantic Margin discovered an area of seabed mounds and tails colonised by corals, the "Darwin mounds" (Masson et al. 2003). Between 1997 and 2000, a UK partnership of scientific research councils and oil companies commissioned a series of projects under a Managing Impacts on the Marine Environment (MIME) initiative. One of these focussed on the distribution and potential environmental sensitivity of cold-water corals (Roberts 1997). In the last two years, European research effort on these communities has developed under the - 74 -
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Preface The expedition ARK XIX/3 wi
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B. 1 Cruise leg ARK XIX/3b: An intr
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The ARK XIX/3 expedition A. 1 Itine
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positioning and navigation of the "
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was followed to obtain video materi
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On Friday morning the 20 th of June
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Fig. A1-2: The working area of the
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"Polarstern" (actual air temperatur
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6000" was still at depth "Polarster
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aseline navigation antennae which a
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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
Page 57 and 58: Box Core Sample Log Sheet Station N
Page 73: A. 4.3.4 Influence of mound topogra
Page 77 and 78: - UMI data logger controlling a tra
Page 79 and 80: Fig. A4.3.5-3. Close-up view of the
Page 81 and 82: Lineated features are present NE of
Page 83 and 84: CARACOLE Cruise Report 30/07/2001 (
Page 85 and 86: intermediate nepheloid layers (Dick
Page 87 and 88: Fig. A4.4.1-2. Location of main stu
Page 95 and 96: A. 4.4.3 Biogeoprocesses along the
Page 99 and 100: in the database with the exact posi
Page 101 and 102: The areas with significant benthic
Page 103 and 104: predators and strong bottom current
Page 105 and 106: faunal distribution. Palaentologica
Page 107 and 108: ocks predate the last glaciation, s
Page 119 and 120: A. 4.4.6 Biological and geological
Page 121 and 122: Hovland M, Croker PF, Martin M (199
Page 123 and 124: 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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