Deutsches Ozeanographisches
Datenzentrum Inventur der Polarstern-Reise ARK-XXVII/1 (DOD-Ref-No.20120317)
Inventory of Polarstern Cruise ARK-XXVII/1 (DOD-Ref-No.20120317)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Polarstern ARK-XXVII/1 14.06.2012 - 15.07.2012   Arctic Ocean Fram strait  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Beszczynska-Moller A. Alfred-Wegener-Institut fur Polar- und Meeresforschung Bremerhaven Longyearbyen   

Ziel der Reise / Objectives of Cruise:

The first leg of the 27th Polarstern expedition to the Arctic was devoted to conduct oceanographic and biogeochemical research in the northern Fram Strait. The cruise started on June 14 from Bremerhaven and was finished on July 15 in Longyearbyen. The field work area was reached after a 10-day long transit. The field research served different projects, among them the EU project ACOBAR (Acoustic Technology for Observing the Interior of the Arctic Ocean) focused on physical oceanography and a suite of biochemical studies carried by the group PEBCAO (Phytoplankton Ecology and Biogeochemistry in the Changing Ocean). The oceanographic measurements were aimed at the estimation of oceanic volume and heat fluxes through Fram Strait between the northern North Atlantic and the Arctic Ocean with a special emphasis on the inter-annual and decadal variability. The vertical profiles of temperature, salinity and oxygen were obtained on 110 CTD stations along the main transect at 78?50'N, covering the entire width of the strait from the shelf east of Greenland to the West Spitsbergen Shelf. Seven of twelve oceanographic deep moorings deployed in 2010 for continuous, year-round measurements of temperature, salinity and currents were recovered and redeployed with new instrumentation. Additionally, three special purpose moorings were deployed in the eastern Fram Strait, two with acoustic modems for underwater data transfer and one equipped with the underwater winch and CTD profiler for collecting data in the subsurface and surface layer. The autonomous underwater vehicle Seaglider was deployed for the 3-month long mission in the northern Fram Strait. The buoyancy-driven glider provides hydrographic data from the upper 1000m layer with a high spatial resolution and in the near real time. For testing the underwater acoustic navigation for glider missions under the sea ice, four acoustic RAFOS sound sources were deployed in the western, ice-covered part of the strait. At 11 multidisciplinary stations along the 78?5'N section, the hydrographic measurements were combined with net sampling and sediment coring for the biogeochemical studies. The abundance and distribution of mesozooplankton was investigated by vertical Midi Multinet hauls from 5 different depth strata down to 1500 m. Additionally a Bongo net was used to investigate the nutritional composition and enzyme activities of the dominant species.During 11 vertical casts with the Maxi Multinet, 10 different amphipod species were recorded, including abundant predatory and rare deep-water forms. The phytoplankton sampling was focused on the Arctic key micro algal species P. pouchetii collected from the upper 10m layer. 93 isolates from 163 field samples were achieved, with most successful isolation of colonies between 3? and 6?E. At 18 stations samples were taken to determine a bacterioplankton community composition and bacterial growth and degradation activities. Three on board experiments were also conducted to investigate potential effects of temperature and pH changes in the Arctic Ocean on the turnover of organic carbon by bacterioplankton communities. The plankton and water samples collected at 10 stations and sediment cores retrieved at 11 stations will be used for isotopic and geochemical analyses of fossil foraminifera for the palaeographic reconstructions. At sea distribution of seabirds and marine mammals was studied along two dedicated transects, the section along the West Spitsbergen coast and the main zonal transect along 78?50'N by observations from the ship and during helicopter flights. The main highlight from the coast transect was the presence of cetaceans, mainly fin whales (approx. 50 in total) as well as occasional observations of humpback, sperm, mine and blue whales. Along the zonal transect most of the expected seabird species were noted, however in low numbers.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
SKIO Stubbins Aron 250 samples B06
Dissolved organic matter (e.g. DOC)
DOC (dissolved organic carbon) and CDOM (colored dissolved organic matter) no
AWI Nothig E.M. 69 samples B08
Phytoplankton
Microscopic analysis no
AWI Nothig E.M. 105 samples B08
Phytoplankton
Analysis of ribosomal genes no
AWI Nothig E.M. 180 samples B08
Phytoplankton
Algal abundance and taxonomic composition no
AWI Valentin Klaus 350 samples B08
Phytoplankton
DNA and RNA analysis no
AWI Gabler Steffi 60 samples B08
Phytoplankton
Micro algal species P. pouchetii no
AWI Kraft Angelina 15 hauls B09
Zooplankton
Abundance and distribution of mesozooplankton no
VUB Joiris Claude 235 hour(s) B25
Birds
Observations from the ship and during helicopter flights no
VUB Joiris Claude 235 hour(s) B26
Mammals and reptiles
Observations from the ship and during helicopter flights no
AWI Nothig E.M. 84 samples B71
Particulate organic matter (e.g. POC, PON)
Particulate carbon and nitrogen, silica and nutrients no
AWI Beszczynska-Moller A. 9 deployment D05
Drifters (number)
4 NEMO floats and 5 SVP-B drifters no
AWI Beszczynska-Moller A. 30 day(s) D71
Current profiler (e.g. ADCP)
VM-ADCP profiling no
AWI Beszczynska-Moller A. 125 stations H09
Water bottle stations
SeaBird Rossette 24 bottles no
AWI Beszczynska-Moller A. 125 stations H10
CTD-Stations
Temperature, salinity, oxygen, fluorescence no
GEOMAH Tanhua Toste 42 stations H21
Oxygen
- no
GEOMAH Tanhua Toste 42 stations H22
Phosphates
- no
GEOMAH Tanhua Toste 42 stations H24
Nitrates
- no
GEOMAH Bauch Dorothea 16 stations H30
Trace elements
Radiogenic neodymium (Nd) isotopes and rare earth elements (REE) no
GEOMAH Bauch Dorothea 32 stations H32
Isotopes
Stable oxygen isotope (δ18O) no
UEASES Kaiser Jan 30 day(s) H33
Other dissolved gases
Air-sea exchange fluxes of CO2, CH4, N2O and CO no
AWI Beszczynska-Moller A. 30 day(s) H71
Surface measurements underway (T, S)
Thermosalinograph (bow and aft) no
GEOMAH Tanhua Toste 42 stations H73
Geochemical tracers (e.g. freons)
CFC-12 (Chlorofluorocarbon-12) and SF6 (Sulfur hexafluoride) no
SKIO Stubbins Aron 100 samples H90
Other chemical oceanographic measurements
DBC (dissolved black carbon) no

Verankerungen / Moorings

Institut
Institute
Wissenschaftler
Scientist
Typ der Messungen
Type of measurements
Kommentar
Comments
geogr.Breite
Latitude
geogr.Länge
Longitude
Daten im DOD
Data in DOD
AWI Beszczynska-Moller A. D01 F10-12 Current meters, ADCP, TS sensors 78° 49.9' N 2° 3.5' E no
AWI Beszczynska-Moller A. D01 F15-9 Current meters, ADCP, TS sensors 78° 50.1' N 1° 35.1' E no
AWI Beszczynska-Moller A. D01 F16-9 Current meters, ADCP, TS sensors 78° 49.8' N 0° 25.8' E no
AWI Beszczynska-Moller A. D01 F2-16 Current meters, TS sensors 78° 50.1' N 8° 20.2' E no
AWI Beszczynska-Moller A. D01 F20-4a Current meters, ADCP, TS sensors 78° 45.0' N 5° 30.0' E no
AWI Beszczynska-Moller A. D01 F20-4b CTD Profiler 78° 45.0' N 5° 15.0' E no
AWI Beszczynska-Moller A. D01 F3-15 Current meters, ADCP, TS sensors 78° 49.9' N 8° 0.3' E no
AWI Beszczynska-Moller A. D01 F4-15 Current meters, ADCP, TS sensors, PAR 78° 50.0' N 6° 60.0' E no
AWI Beszczynska-Moller A. D01 F5-15 Current meters, ADCP, TS sensors 78° 50.0' N 6° 0.0' E no
AWI Beszczynska-Moller A. D01 F6-16 Current meters, ADCP, TS sensors, PAR 78° 50.0' N 5° 0.0' E no
AWI Beszczynska-Moller A. D01 F7-12 Current meters, ADCP, TS sensors 78° 49.7' N 4° 0.5' E no
AWI Beszczynska-Moller A. D01 F8-13 Current meters, ADCP, TS sensors 78° 49.4' N 2° 45.3' E no
AWI Beszczynska-Moller A. D01 F9-11 Current meters, ADCP, TS sensors 78° 49.9' N 0° 48.8' E no
AWI Beszczynska-Moller A. D01 FSQ1-4 RAFOS source (Sound Fixing and Ranging) 78° 57.1' N 2° 57.5' W no
AWI Beszczynska-Moller A. D01 FSQ2-4 RAFOS source (Sound Fixing and Ranging) 79° 0.2' N 0° 0.6' E no
AWI Beszczynska-Moller A. D01 FSQ3-3 RAFOS source (Sound Fixing and Ranging) 78° 29.2' N 2° 28.5' W no
AWI Beszczynska-Moller A. D01 FSQ4-2 RAFOS source (Sound Fixing and Ranging) 79° 9.1' N 1° 28.8' W no
AWI Beszczynska-Moller A. D01 FSQ5-1 RAFOS source (Sound Fixing and Ranging) 78° 35.0' N 1° 0.0' W no
AWI Beszczynska-Moller A. D01 FSQ6-1 RAFOS source (Sound Fixing and Ranging) 78° 49.5' N 1° 29.1' W no
AWI Beszczynska-Moller A. D01 FSQ7-1 RAFOS source (Sound Fixing and Ranging) 78° 44.2' N 4° 2.8' W no
AWI Beszczynska-Moller A. D71 F1-14 Bottom mounted ADCP mooring 78° 50.0' N 8° 40.0' E no
23.3.2024