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

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a: PS64/427, GKG, 5-15 cm; Siltstone clast, probably from Svålbard d: PS64/402, MUC, 25 cm; Coarse sandstone probably from Svålbard, well-rounded by coastal wave activity b: PS64/409, GKG, 0-20 cm; Cretaceous chalk clasts from the southern North Sea area e: PS64/437, GKG, 0-15 cm; Flint (upper left), granite (upper right), red Devonian sandstone (lower left), till (lower right) c: PS64/442, GKG, 0-20 cm; Scratched clasts, light quartzite and dark siltstones, probably from Svålbard Fig. C5-2a-f: Photos of ice-rafted debris in the uppermost 20 cm of the sediments. f: PS64/409, GKG, 0-20 cm; Unrounded sericite shist, mica shist and quartzites - 259 -
C. 6 Debris on the seafloor at “Hausgarten” Galgani, F, Lecornu, F. Introduction The presence of litter has been evaluated since 1992 along the European coasts at different locations (Baltic Sea, North Sea, Celtic Sea, French coasts and Adriatic Sea). Some high densities were found in different areas especially where the currents are eddying and in coastal canyons where they can accumulate. Fram Strait is of special interest because of the currents enabling the transportation of debris through the different water masses such as the Norwegian and the north Atlantic currents (deep and intermediate) coming from the North Sea and along the Norwegian coast. Beside, the presence of geomorphological factors in Fram Strait that could lead to an accumulation of debris is of special interest. The Molloy Deep is about 5500 m deep and could retain debris. In this context, debris were observed and counted during dives of the ROV "Victor 6000" to demonstrate the presence of debris in “Hausgarten”. In addition, dives from the 1999 "Polarstern" expedition with the ROV onboard were also analysed in order to compare data and demonstrate the expected accumulation of debris in the Molloy deep. Methods Litters were counted by observers during 5 dives (No.s 227, 228,229, 230 and 232) performed during the ARK XIX/3c cruise (Fig. C6-1). Most of the dives were in central “Hausgarten”, except dive 230 located at “Hausgarten”-South. Dives data were computed using the ADELIE software (F. Lecornu, IFREMER). Counts were performed only during survey (routes) from the "Victor 6000" ROV with distance on the bottom varying from 1.150 to 12.670 meters. Densities of litters were calculated per km route. Additional data were obtained from the 1999 ARK XIV cruise. - 260 -
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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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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 235 and 236: Micro profiles of O 2 but also of p
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Page 239 and 240: 2° 3° 4° N2 5° PS64/481 PS64/48
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Page 243 and 244: C. 4 Marine Geology Kukina, N. Majo
Page 245 and 246: 2° 3° 4° 5° 6° PS64/481 79°20
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Page 253 and 254: material via the Transpolar Drift t
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Page 259: Eastern Greenland, Iceland and Scan
Page 263 and 264: Results A summary of the results is
Page 265 and 266: enthic community are of crucial imp
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Page 279 and 280: Climate models predict that global
Page 281 and 282: 90 mean copepod densities/ 10 cm 2
Page 283 and 284: - Molecular phylogeny and phylogeog
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Page 287 and 288: was used to terminate and sample th
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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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