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

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One N-S profile was sampled at a spacing of 50 m. The result is a set of two temperature curves at 0.25 and 0.55 mbsf. Only one site near the centre of HMMV shows significantly increased values, at 100 m distance, temperature values are almost background values (figure B3.1.2-2). Figure B3.3-2: Temperature profile of a N-S profile across the centre of HMMV. Horizontal axis is a continuous time scale and vertical temperature excursions represent station time in the sediment. B. 3.1.3 Temperature measurements with long gravity corers Foucher, J.-P., Kaul, N. On several gravity corer stations the tool is equipped with autonomous temperature loggers to gain temperature information from greater depth, i.e. down to 10 or more m below sea floor. From technical consideration, we chose a setting of a 10 m long core barrel with 9 or 10 loggers attached to it at a spacing of 0.88 or 1 m, respectively. Nine gravity corers were equipped with loggers and six of them gave successful readings (for locations, see figure B3.1.3-1, below). We think that failed penetrations are due to gas hydrates. On the other hand the centre of the mud volcano yielded “over-penetration”, i.e. the instrument penetrated completely and the overall penetration depth had to be reconstructed from mud line marks on the deep sea cable. In summary we got 6 temperature-depth profiles, covering depth intervals from almost 0 to 16 mbsf (see figure B3.1.3-2). - 169 -
Temperature / Gravity Corer # GC9 # GC1 # GC2 # GC7 # GC8 # # GC6 GC5 # GC4 # GC3 0.3 0 0.3 Kilometers Figure B3.1.3-1: Locations of gravity corers, equipped with temperature loggers. As a preliminary result from deep penetrating temperature measurements, we have the observation that temperatures do not increase steadily with depth but tend to level out near a temperature maximum. Figure B3.1.3-2: Six deep penetrating temperature depth profiles down to 16 mbsf. - 170 -
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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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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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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
Page 139 and 140: Fig. A4.8.2-7: Top left) Yellow alc
Page 141 and 142: scour or demersal trawling. The gro
Page 143 and 144: survey at frequencies of 38, 70, 12
Page 145 and 146: "Belgica mounds" - Porcupine Seabig
Page 147 and 148: "Twin mounds" - Porcupine Bank 14°
Page 149 and 150: corals were alive, relatively abund
Page 151 and 152: Network Setup for Tests The setup f
Page 153 and 154: are only initial testings and much
Page 155 and 156: pressure produced as a consequence
Page 157 and 158: surrounded by elevated sediment fea
Page 159 and 160: B. 2 Microbathymetry on ROV "Victor
Page 161 and 162: Pitch correction Due to assembling
Page 163 and 164: Maps Complete area Håkon Mosby Mud
Page 165 and 166: B. 3 Geochemistry, geophysics and s
Page 167 and 168: Heat Flow HMMV 2m # # # # # # # # #
Page 169: Lat_dec. Lon_dec Name k T_0m PS64/s
Page 173 and 174: Table B3.2-1: Technical specificati
Page 175 and 176: Sound velocity: As the cores all co
Page 177 and 178: Fig. B3.3-1: Display of a 4 km long
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Page 181 and 182: Fig. B3.4-1b: Lithological descript
Page 183 and 184: Fig. B3.4-1d: Lithological descript
Page 185 and 186: Fig. B3.4-1f: Lithological descript
Page 187 and 188: hydrotroilite and gas hydrate, this
Page 189 and 190: As an example, a echo sounder image
Page 191 and 192: B. 5 Biological investigations at t
Page 193 and 194: - How much methane is oxidized aero
Page 195 and 196: profiler). Bottom water samples hav
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Page 199 and 200: 1 kg of tubeworms in wet weight. Th
Page 201 and 202: B. 5.2 Microscale analysis of the s
Page 203 and 204: Laboratory measurements Central sit
Page 205 and 206: O2, CO3-- (mM) Beggiatoa mats, 30/0
Page 207 and 208: Photograph of the sulfide oxidising
Page 209 and 210: Central area No measurements could
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Page 213 and 214: B. 5.3 Methane in gas hydrate beari
Page 215 and 216: The deployments covered 3 (5) diffe
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[2] Vincent AG, Pessel N, Borgetto
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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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