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

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After the passage of a cold front in the night to 2003-07-16 visibility improved. On 2003- 07-17 we were between a high over the Norwegian See and a low over Northeast Greenland. This situation brought us increasing westerly winds up to force 6 Bft. In the late afternoon research work came to an end und we left the area. During our transit to Longyearbyen fresh to strong southwesterly winds were observed. 30 25 20 % 15 10 5 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Bft Fig. A2.2-2 Distribution of wind force 25 20 % 15 10 5 0 N NE E SE S SW W NW VRB Fig. A2.2-3: Distribution of wind directions - 23 -
The temperatures during the cruise varied between 6 and 12°C, the water temperatures between 8 and 11°C. A. 2.3 Weather situation during the cruise leg ARK XIX/3c Dittmer, K. At the beginning of this leg a low pressure system over Spitsbergen moved eastwards slowly to the Barents Sea and later to Severnaja Zemlja. On July 20 in the rear of the low it was raining at first and for a short period the northwesterly wind increased to Bft 5-6, but then abated for a time, the visibility improved and the sky became sunny. Even on the next day, when the wind was backing to southwest and south and increased again to Bft 5-6, the research activities could be carried out in bright and sunny weather with excellent visibility. Afterwards the typical “summerweather” of the arctic ice edge was encountered with low clouds and often poor visibility as well as fog banks. Southerly winds of Bft 4 to 6 caused this situation, which continued until July 23. The southwinds were produced by a high, which developed near Jan Mayen and moved across the Barents Sea to northern Siberia. On July 24th the wind became light and variable and in the ice-region it was very foggy. On July 26th a new high pressure system had developed east of Svålbard. With simultaneous pressure falling over northern Greenland a warmfront crossed the Framstrait and it was raining. The southwind during the next night increased to 6 Bft accompanied by a sea of 2 meters. In the inflowing humid airmass wide-spread fog occurred. Two days later a second warmfront with rain was moving northward over the research area and on the next day a low approached from the south, moving in the same way, causing light and variable winds as well as fog in the Fram Strait. Due to stormy easterly winds in the Barents Sea a swell of 3 to 4 meter arrived at the ship´s position. During the night from July 30 th to 31 st a new secondary depression developed over the Greenland Sea. In the rear of the low the maximum wind speed measured was Bft 7 (14 m/s) in the evening of July 31st. On the first of August this low drifted into the North Polar Sea and the weather improved significantly: With southwesterly winds of Bft 5 the clouds disappeared and the visibility became very good. But this situation was not stable. In the evening stratus clouds approached from the ice in the west and during the next day the visibility was very poor - 24 -
Page 1 and 2: Preface The expedition ARK XIX/3 wi
Page 3 and 4: B. 1 Cruise leg ARK XIX/3b: An intr
Page 5 and 6: The ARK XIX/3 expedition A. 1 Itine
Page 7 and 8: positioning and navigation of the "
Page 9 and 10: was followed to obtain video materi
Page 11 and 12: On Friday morning the 20 th of June
Page 13 and 14: Fig. A1-2: The working area of the
Page 15 and 16: "Polarstern" (actual air temperatur
Page 17 and 18: 6000" was still at depth "Polarster
Page 19 and 20: aseline navigation antennae which a
Page 21 and 22: Fig. A1-3: Entire cruise track of R
Page 23: At end of the leg pressure rising b
Page 27 and 28: Most frequent wind direction was so
Page 29 and 30: A. 3.1 High resolution seabed mappi
Page 31 and 32: On the other hand, the accuracy of
Page 33 and 34: The sampling campaign was also unde
Page 35 and 36: 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
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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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Box Core Sample Log Sheet Station N
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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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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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- 250 -
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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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