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

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A. 4.4.2 Biogeoprocesses along the "Twin mounds" transect Wheeler, A., Roberts, M. An ROV dive and box-core sampling were performed (Fig. A4.4.2-1) to compare deepwater coral habitats that have been trawled and untrawled. Fig. A4.4.2-1. Location map showing the ROV dive track and location of box-cores. The dive transect covered 3 small untrawled upslope carbonate mounds. A significant area of background seabed was then surveyed in transit to the "Twin mounds" to facilitate on-mound and off-mound biological comparisons. Detailed ROV coverage was then performed on the "Twin mounds" with abundant evidence of trawling damage (see section A. 4.8). Box-cores logs are presented below. - 87 -
Box Core Sample Log Sheet Station No. PS64/282-2 Date 13 June 03 Box Core No. 20 Time of sample 1152 (UTC) SAMS Station No. - Depth (m) 988 Position 53º 05.904N 14º 54.707W Operator O Pfannkuche Sample Description Core target, "Twin mounds". Crinoids, small cm-dm size eroded coral fragments. Many ophiuroids on coral fragments. Aphrocallistes fragment. Medium to coarse sand. Many gastropods. ----------------------------------------------------------------------------------------------------------------- Depth core penetration 18cm ----------------------------------------------------------------------------------------------------------------- Depth from surface of core Sieve mesh size Surface area core sieved 0-5cm 2, 1, 0.5mm 5-10cm 2, 1, 0.5mm ----------------------------------------------------------------------------------------------------------------- Sample removed No. individuals / No. subcores To whom? Crinoid, coral fragments A Grehan - 88 -
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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
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At end of the leg pressure rising b
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The temperatures during the cruise
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Most frequent wind direction was so
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A. 3.1 High resolution seabed mappi
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On the other hand, the accuracy of
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The sampling campaign was also unde
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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 and 74: A. 4.3.4 Influence of mound topogra
Page 75 and 76: A. 4.3.5 Photo lander deployment on
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: 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
Page 125 and 126: sites can subsequently be transport
Page 127 and 128: 4) The NSOW has similar water mass
Page 129 and 130: 0 100 200 300 400 500 600 700 800 P
Page 131 and 132: A. 4.8 Deep water coral ecology and
Page 133 and 134: and video observations made. On ret
Page 135 and 136: Fig. A4.8.2-2: This orange, planar
Page 137 and 138: 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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