Deutsches Ozeanographisches
Datenzentrum
Inventur der Polarstern-Reise PS106-2 ARK-XXXI/1-2 (DOD-Ref-No.20170084)
Inventory of Polarstern Cruise PS106-2 ARK-XXXI/1-2 (DOD-Ref-No.20170084)
Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
---|---|---|---|---|
Polarstern | PS106-2 ARK-XXXI/1-2 | 23.06.2017 - 20.07.2017 | Barents Sea Arctic Ocean |
Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
---|---|---|---|---|---|
Flores Hauke | Alfred-Wegener-Institut fur Polar- und Meeresforschung | Longyearbyen | Troms? |
Ziel der Reise / Objectives of Cruise:
Polar cod (Boreogadus saida) takes a key role in Arctic ecosystems, because it constitutes the staple food of seals and seabirds. Young polar cod live often associated with the underside of sea ice for foraging and protection from higher predators. Due to climate change, the extent of the under-ice habitat is decreasing. On PS 106/2, SiPCA (Survival of Polar Cod in a Chaning Arctic Ocean) aimed to investigate the importance of sea ice for polar cod in the Barents Sea and the adjacent Arctic Ocean. We simultaneously sampled the spatial distribution of polar cod, its prey, its predators and other environmental parameters using fishing nets and ocean sensors. In parallel, we continued large parts of the continuous atmospheric sampling programme begun on PS 106/1, and investigated the physical and biogeochemical properties of sea ice and melt ponds during five sea ice stations. The data obtained from this expedition will contribute to a more quantitative understanding of the sea ice-associated ecosystem, its importance for polar cod, physical and biogeochemical processes of sea ice and meltponts, as well as atmospheric dynamics in the Arctic. Polarstern left Longyearbyen on June 23rd, 14:00 local time. Continuous measurements of the water column and the atmosphere were started after leaving the 12 nm-zone. On June 24th we started a series of daily sampling stations focusing on the chemical composition of the sea surface microlayer. An ice station was completed on June 26th. Here, we took samples of sea ice and the underlying water and deployed our ROV. We then performed 3 stations south of the Island Kwitoya, where we used bottom trawls, CTDs, plankton nets and collected water samples. On June 27th, we continued our way northwards. North of the island Kwitoya, we performed another ice station on June 29th. Proceeding northwards from there, we sampled with various plankton nets and CTDs. After arriving on the shelf slope, we started a hydrographical transect into the deep sea, performing CTD casts at high spatial resolution. On July 1st we concluded our hydrographical transect across the Barents Sea shelf slope between 32 and 33?E. We then proceeded northwards, conducting continuous measurements of atmospheric properties and biological water column parameters. Surface microlayer samples were taken, CTDs, zooplankton nets and our under-ice trawl were deployed at regular intervals together with optical and acoustical zooplankton detectors. On the night from June 2nd to June 3rd we conducted the third ice station. We then resumed our sampling of physical and chemical water properties, zooplankton and under-ice fauna, as we continued north until reaching the northernmost position of this expedition at 83?43'N 32?18'E. Here, we performed the fourth ice station. After our ice station at 83?30'N 28?E was concluded on July 6th, we turned south, conducting continuous measurements of atmospheric properties and biological water column parameters. On the night from July 11th to July 12th we conducted the fifth ice station at the PASCAL floe of PS 106/1. Leaving the ice station, we conducted a hydrographical transect up the Svalbard shelf slope in the night from July 12th to July 13th. Then, we continued east, only interrupted by our daily surface microlayer programme and occasional CTDs. From July 15th to July 17th we conducted a bottom trawl survey to the east of the islands Nordaustlandet and Spitzbergen, between the ice edge and the 12-miles zone. The scientific station work was completed on July 17th.On the way to Tromso, underway-measurements were continued, but were stopped before reaching the 12 miles-zone of the Norwegian mainland. We arrived at our final destination Tromso on July 20th.
Messungen / Measurements
Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
---|---|---|---|---|---|---|
AWI | Metfies Katja | 18 | samples | B02 Phytoplankton pigments (e.g. chlorophyll, fluorescence) |
From CTD. | no |
AWI | Niehoff B. | 19 | deployment | B09 Zooplankton |
Multinet. | no |
AWI | Niehoff B. | 21 | deployment | B09 Zooplankton |
Lightframe On-Sight Key Species Investigations (LOKI). | no |
AWI | Flores Hauke | 6 | hauls | B09 Zooplankton |
ROVnet. | no |
AWI | Flores Hauke | 14 | hauls | B09 Zooplankton |
Rectangular Midwater Trawl (RMT). | no |
AWI | Flores Hauke | 22 | hauls | B09 Zooplankton |
Surface and Under-Ice Trawl (SUIT). | no |
AWI | Bock Christian | 10 | hauls | B19 Demersal fish |
Bottom Trawl. | no |
AWI | Flores Hauke | 8 | survey | B25 Birds |
Bird and mammal census from helicopter. | no |
AWI | Flores Hauke | 25 | day(s) | B25 Birds |
Bird and mammal census from Peildeck. | no |
AWI | Metfies Katja | 16 | samples | B71 Particulate organic matter (e.g. POC, PON) |
From CTD. | no |
AWI | Metfies Katja | 33 | samples | B71 Particulate organic matter (e.g. POC, PON) |
DNA samples with AutoFim. | no |
AWI | Peeken Ilka | 198 | samples | B90 Other biological / fishery measurements |
Ice cores for biological parameters. | no |
AWI | Flores Hauke | 25 | day(s) | G74 Multi-beam echosounding |
EK60 zooplankton and fish survey. | no |
AWI | Nikolaus Marcel | 5 | profiles | G90 Other geological or geophysical measurements |
ROV profiles. | no |
AWI | Nikolaus Marcel | 5 | survey | G90 Other geological or geophysical measurements |
Ice thickness surveys (EM-Bird). | no |
AWI | Nikolaus Marcel | 6 | profiles | G90 Other geological or geophysical measurements |
GEM (ice thickness) profiles. | no |
AWI | Nikolaus Marcel | 6 | profiles | G90 Other geological or geophysical measurements |
Snow depth (Magna Probe). | no |
AWI | Nikolaus Marcel | 6 | profiles | G90 Other geological or geophysical measurements |
Snow profiles. | no |
AQUABI | Nikolopouzlos Anna | 10 | deployment | H10 CTD-Stations |
Expandable CTD (XBT). | no |
AQUABI | Nikolopouzlos Anna | 32 | deployment | H10 CTD-Stations |
. | no |
AWI | Flores Hauke | 3 | deployment | H10 CTD-Stations |
Handheld CTD. | no |
UGOTH | Heuze Celine | 4 | deployment | H13 Bathythermograph drops |
. | no |
IFT | Macke Andreas | 29 | deployment | H90 Other chemical oceanographic measurements |
Surface microlayer chemistry sampling. | no |
AWI | Nikolaus Marcel | 2 | meas. | M02 Incident radiation |
Hyperspectral incoming light. | no |
UNIBRE | Palm Mathias | 25 | meas. | M02 Incident radiation |
FTIR. | no |
CAUKI | Oppelt Natascha | 14 | survey | M02 Incident radiation |
Hyperspectral meltpond surveys with helicopter. | no |
AWI | Nikolaus Marcel | 5 | stations | M04 Ice observations |
Sea ice stations (multiple physical, biogeochemical, biological, atmospheric parameters). | no |
IFT | Macke Andreas | 16 | samples | M71 Atmospheric chemistry |
Aerosol particle sampling (with Berner impactor and High volume Digitel PM1 sampler). | no |
IFT | Macke Andreas | 25 | day(s) | M71 Atmospheric chemistry |
Raman lidar PollyXT. | no |
IFT | Macke Andreas | 25 | day(s) | M90 Other meteorological measurements |
Radiation budget measurements from microwave radiometer. | no |
UNITRI | Heinemann Gunther | 25 | day(s) | M90 Other meteorological measurements |
Wind lidar. | no |
AWI | Nikolaus Marcel | 24 | obs. | M90 Other meteorological measurements |
Sea ice observations during transit. | no |
UNIBRE | Palm Mathias | 25 | meas. | M90 Other meteorological measurements |
FTIR. | no |