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

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Satellite Internet Satellite dish AWI Fig. A4.10-2: Actual Network Setup. Test and Results A series of 64 bytes packets were sent to the AWI internet protocol (IP) address in Bremerhaven in order to test the round trip time (RTT) from the RV "Polarstern" research vessel to Bremerhaven and back. The test will also determine the reliability of the satellite link and can also be used as an initial rough guide to the speed of the transmission. The result will not determine the exact speed of the transmission due to the asymmetry in satellite communication links. The results obtained for the tests showed a RTT of an average of 753 ms with a minimum 753 ms and a maximum time of 758 ms. This worked out at around 680 bps transmission speed, a very slow speed. The results do not concur with the results of earlier tests, therefore further testing are required. The success rate for the tests was only 43 %, verifying the general acceptance that satellite links are unreliable. However, further tests are again required in different conditions as there are too many factors that may cause a data packet to be dropped. Conclusion The tests performed on this expedition have shown that the constraints to the final objective of this project will be the speed and the reliability of the satellite link. These - 151 -
are only initial testings and much more testing is required in order for the project to be realized. Results from this expedition, together with the results from the earlier campaign, have contributed greatly to the initial test phase. . - 152 -
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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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Page 109 and 110: Box Core Sample Log Sheet Station N
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: Network Setup for Tests The setup f
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 and 170: Lat_dec. Lon_dec Name k T_0m PS64/s
Page 171 and 172: Temperature / Gravity Corer # GC9 #
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
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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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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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