the Expedition ARKTIS-XIX/4 of the research vessel POLARSTERN ...

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34 Fig. 2-5: Flight statistics for the duration of the expedition Fig. 2-6: Location of magnetic lines acquired around 79°N. The spacing is 5 km. The light grey lines indicate the profiles acquired in 2002; the black ones are collected during this season.
3 Bathymetry S. Gauger, B. Reese, A. Winkler During the expedition ARK-XIX/4 the bathymetry working group performed 58 days of Hydrosweep DS2 (HYDROgraphic multibeam SWEEPing survey echosounder - Deep Sea 2) measurement. The main characteristics of the multibeam sonar system are the 90°/120° coverage angle in which the seafloor is depicted with 59 specific values for water depths across the ship’s long axis. The accuracy of this measurement is ~0.5% of the water depth. For the slant range correction of the sonar beams the automatic self calibration process was used. The observed depths are between several decadic meters in the coastal regions of Greenland and up to 5500 meters in the Molloy deep. The survey was performed mainly during seismic measurements in the Greenland Sea (72°N - 77°N and 0° - 25°W), which were carried out by the geophysical working group. The seismic profiles along and across the East Greenland shelf edge led us to the three fjords Ardencaple Fjord, Godthaab Golf and Kejser Franz Josephs Fjord. Especially a bathymetric profile in the Ardencaple Fjord continued a measurement from the Polarstern expedition ARK-X/1 in 1994. The profile took five hours of measurement time with a coverage angle of 120°. The figure 3-1 shows the surveyed area and gives a good overview of the rough fjord topography. The collected data within the region 73°40’N to 75°10’N and 3°W to 15°W were taken into account particularly. They will be used to extend the existing data base of the ARKTIEF project. The data for this project have been collected while former Polarstern expeditions to investigate the Ardencaple Channel System. Additionally an important work during the cruise was the producing of cleaned navigation files with the associated depth values in a five seconds interval for the geophysical working group daily. These data will be used by the geophysicists to process the gravity values measured by the ships gravimeter. The needed data values were extracted from the PODAS database. Then they were edited using the Caris HIPS software and given to the geophysical working group after reformatting to the so called Nak-format. Furthermore during the second part of the expedition the survey went on along the oceanographic profile at 78°50’N in the Fram Strait between 8°E and 4°W. 35
Page 1: the Expedition ARKTIS-XIX/4 of the
Page 5 and 6: 1 Cruise summary W. Jokat The exped
Page 8 and 9: 6 1.1 Wetterverlauf ARK XIX/4a Bei
Page 10 and 11: 8 noch vor der Küste, fern davon a
Page 12 and 13: 10 northerly wind increased steadil
Page 14 and 15: 12 In the latest stages of the proj
Page 16 and 17: Profile Date/Time Start Date/Time T
Page 18 and 19: Station Typ Extra Lat Long Höhe [m
Page 20 and 21: Station Typ Extra Lat Long Höhe [m
Page 22 and 23: Date Flight Start Time End Time No
Page 32 and 33: 30 Preliminary results Along profil
Page 34 and 35: 32 In addition to the deep seismic
Page 38 and 39: 36 Fig. 3-1: Seafloor topography of
Page 40 and 41: 38 In total, the PARASOUND system o
Page 42 and 43: 40 Figure 4.1-3: Example of PARASOU
Page 44 and 45: 42 Station Latitude Longitude Date
Page 46 and 47: 44 After PCR was finished, samples
Page 48 and 49: 46 Potsdam Lake (Shannon Island) Sc
Page 50 and 51: 48 In den Schmelzwassertümpeln kon
Page 52 and 53: Temp. Sal. Tiefe max. Tiefe Trübe
Page 54 and 55: 52 Store Koldewey Store Koldewey is
Page 56 and 57: 54 In the shallow ponds the hydrolo
Page 58 and 59: 56 The low amounts of solubles in t
Page 60 and 61: 58 lake core no. latitude longitude
Page 62 and 63: 60 6.3 Diatom phytoplankton and phy
Page 64 and 65: 62 Generally, all sampled benthic s
Page 66 and 67: 64 shaped profile at the top were i
Page 68 and 69: 66 depth horizon description sample
Page 70 and 71: 68 measured in the field, and the c
Page 72 and 73: 70 Summary of results The summit pl
Page 74 and 75: 72 Pre-Holocene shell material Pre-
Page 76 and 77: 74 Christensen, T.R. (1993): Methan
Page 78 and 79: 76 No EVK2-2001-00215 (ASOF-N). The
Page 80 and 81: 78 Altimeters Model 2110-2, SN 189
Page 82 and 83: 80 Mooring Latitude Longitude Water
Page 84 and 85: 82 Mooring Latitude Longitude Water
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84 30° W 20° W 30° W Greenland 2
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Fig. 7-4: Vertical transects of pot
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88 8 Bericht zur akustischen Vermes
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90 Quality control sheet - Profile
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92 Quality control sheet - Profile
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Station List Station Date Time Posi
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142 Beteiligte Institutionen / Part
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144 Fahrtteilnehmer / Participants
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