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

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227 228 229 230 232 Fig. C6-1: Routes of the ROV dives 227, 228, 229, 230 and 232 during ARK XIX/3c; surveys for litters were performed only along ROV transits. - 261 -
Results A summary of the results is given in Tab. C6-1. Total amount of debris found during the 5 dive was 17 for a total distance of 25.020 m. Density per km was ranging from 0.20 to 0.92 with a total percentage of plastic of 76 %. Tab. C6-1: Litter on transits of the ROV "Victor 6000" during dives at AWI-“Hausgarten”. Dive Date Position (lat N / lon E) Depth (m) Transits Debris plastics debris/ (km) (no. of km items) 102 30/06/1999 79 04.0 / 04 10.0 2365-2517 15.42 1 0 0.06 103 01/07/1999 79 03.8 / 04 11.1 2392-2458 1.89 1 1 0.52 104 03/07/1999 79 07.0 / 02 50.0 5339-5552 6.77 15 13 2.21 105 08/07/1999 79 28.1 / 03 00.1 2813-3410 13.95 7 2 0.50 106 10/07/1999 74 19.7 / 10 37.8 3154-3167 14.10 5 1 0.35 227 22/07/2003 79 03.8 / 04 11.6 2395-2453 12.67 9 7 0.71 228 24/07/2003 79 04.0 / 04 05.0 2415-2445 3.95 3 2 0.75 229 26/07/2003 79 04.0 / 04 10.0 2336-2485 5.00 1 1 0.20 230 29/07/2003 78 36.4 / 04 05.0 2284-2294 1.15 1 1 0.86 232 31/07/2003 79 04.0 / 04 07.0 2334-2344 3.25 3 2 0.92 Discussion and Conclusions The density of litters at “Hausgarten” is low when compared to some European basins (Baltic Sea, North Sea, NW Mediterranean and Adriatic Sea) but significant since such densities remains in the same range than some European deep sea and costal areas (Celtic Sea, Bay of Seine, Bay of Biscay). Plastic account for the larger part of debris as commonly observed in other European areas. Analysis of dive 104 (1999) demonstrate a higher density of debris in the Molloy Deep. From these results, we can conclude that debris is present at “Hausgarten” and could accumulate on deeper part of the area. Extrapolation to the entire Fram Strait (76.40 N/ 80.50 N; between Svålbard and Greenland) is not possible with insufficient data but could lead to total amount of debris of more than 10 millions. - 262 -
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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
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Fig. A4.2-2: Normalized backscatter
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In addition to the micro bathymetry
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ackscatter value of -37.0dB, -38.9d
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athymetry and angular backscatter d
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A. 4.3 Sedimentary and hydrodynamic
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glacial periods. There is also evid
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Fig. A4.3.2-2: Visualisation of dif
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It seems that all the mounds along
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Visible calcareous fauna removed (b
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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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Page 225 and 226: References Milkov, A., Vogt, P., Ch
Page 227 and 228: ROV "Victor 6000" The ROV "Victor 6
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Page 243 and 244: C. 4 Marine Geology Kukina, N. Majo
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Page 253 and 254: material via the Transpolar Drift t
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Page 261: C. 6 Debris on the seafloor at “H
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Page 273 and 274: Tab C11-1: Stationlist of in situ m
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Page 279 and 280: Climate models predict that global
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Page 283 and 284: - Molecular phylogeny and phylogeog
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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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