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 |