Cruise report
Prospecting camps for mineral resources and Arctic politics: the LASHIPA 9 expedition
Mining pick at the former entrance of an asbestos mine, Recherchefjorden. Photo: Pia Leminen The objective of the expedition was to gather archaeological data from camps on Spitsbergen that were used for mining and prospecting by British and Dutch...
Cruise report
The retreat of the West Antarctic Ice Sheet since the Last Glacial Maximum
Large tabular iceberg in the Ross Sea on the way towards Pine Island Bay. Photo: Martin Jakobsson This project addresses the following questions: What was the timing of the West Antarctic ice sheet’s (WAIS) retreat since the Last Glacial Maximum...
Cruise report
Why measure cosmic radiation with a three-tonne block of ice on an icebreaker?
Freezer container with detectors installed on Oden. Inside is thethree tonne ice block and neutrino detectors. Photo: Allan Hallgren Researchers at the geographic South Pole have built IceCube, the world’s largest neutrino observatory. One reason...
Cruise report
Organism adaptations to extreme Antarctic waters
A copepod (about 1 mm long) with bright red photoprotective pigmentation (carotenoids). Photo: Hans Berggren The ozone hole above Antarctica has increased considerably during the last decades, allowing higher doses of ultraviolet (UV) radiation to...
Cruise report
Winter sea ice: The missing link in the biogeochemical cycle of organo-halogens in polar areas
Polarstern in Antarctic darkness. Photo: Stefan Hendricks This project aims to understand how changes in global climate will affect the processes determining halocarbon production and cycling in polar areas and interactions at the snow-sea and...
Cruise report
Interrelated biogeochemical cycles of halocarbons and mercury
Katarina Abrahamsson sampling for halocarbons at an ice station. Anna Wåhlin This project aims to determine the importance of certain greenhouse gases (i.e., halocarbons) and mercury for chemical and biological exchange processes in the cryosphere...
Cruise report
Physical oceanography
Deployment of CTD instrument for long-term measurements. Photo: Anna Wåhlin The glaciers emptying into the Amundsen Sea in West Antarctica have displayed accelerated thinning in recent decades. There are clear signs that this is caused by...
Cruise report
Implications of increasing CO2
Sea-ice and snow sampling. Photo: Agneta Fransson What is the effect of sea ice and glacial meltwater on the CO2 exchange and calcium carbonate saturation state (i.e., Ω)? We set out to investigate the mechanisms driving the CO2 air−ice−sea flux...
Cruise report
Health assessment of Antarctic seals
Weddell seal basking in the sun. Photo: Karin Hårding We have investigated the health status of three endemic seal species, i.e., the Ross, Weddell, and crabeater seals. Our main interest was to search for antibodies to canine distemper virus in...
Cruise report
Mapping the Amundsen Sea polynya microbiome: patchiness and role in carbon processing
Peng Yi and Keliang Shi were landed on the sea ice for collection of snow samples. Photo: Patricia L. Yager Our aim on this expedition was to use iodine isotopes (129I and 127I) and species in the water and air of the Atlantic and Southern oceans...
Cruise report
Mapping the Amundsen Sea polynya microbiome: patchiness and role in carbon processing
Microscopic image of DNA-stained Southern Ocean bacteria. Photo: Inga Richert We are part of the Amundsen Sea Polynya International Research Expedition (ASPIRE) project, which aims to investigate climate controls of carbon fluxes in one of the...
Cruise report
Climate change and predatory invasion of the Antarctic marine environment
The invasive predatory King Crab (Lithodidae) on the slope near the Antarctic Peninsula, captured by the SeaBed camera. Global climate change is altering polar marine ecosystems through rising temperatures. In the Southern Ocean, the physiological...
Cruise report
Investigating the source of iron and other trace nutrients in the Amundsen Sea Polynya
Nathaniel B. Palmer docked on ice during a short break from sampling in the Amundsen Sea. Photo: Julie Dinasquet The Amundsen Sea, located off West Antarctica between the Antarctic Peninsula and the Ross Sea, is home to one of the twenty-some...
Cruise report
The frozen Garden of Eden: on the hunt for Eocene mammals
Large Cretaceous ammonite from southern Seymour Island. Photo: Jonas Hagström. How did the paleogene mammals of the southern hemisphere evolve and spread? The record of Antarctic mammals and other terrestrial vertebrates is still very poor. New...
Cruise report
MARA: Moveable Atmospheric Radar for Antarctica
Group of snow petrels attracted by tethered sonde measurements. Photo: Maria Mihalikova Do we really understand the global circulation in the upper 60–100 km of the atmosphere? Do small-scale processes cause significant mixing of air between...
Cruise report
IceCube − the world’s biggest neutrino telescope
A Digital Optical Module (dom) going down. Photo: Klas Hultqvist. What does the dark matter in the universe consist of? There is six times as much dark matter in the universe as there is normal matter, made of atoms. Where does the very...
Cruise report
Neoproterozoic mountain building in southern and central Svalbard
Sketch reconstruction of the late Mesozoic North Atlantic Caledonides showing the Grenville–Sveconorwegian basement distribution: a) theinterpretation preferred in recent reconstructions of Rodinia; b) alternative interpretation. This project...
Cruise report
Continued data acquisition within the Danish Continental Shelf Project: EAGER 2011 cruise
3D visualization of the multibeam bathymetric data acquired during the EAGER 2011 cruise. These data will be incorporated in the upcoming new version of the International Bathymetric Chart of the Arctic Ocean (IBCAO). Background bathymetric grid:...
Cruise report
Antibiotic resistant enterobacteriaceae in different bird populations in Antarctica
Adeliepenguin in the leap. Photo: Jonas Bonnedahl To what extent is the current development of antibiotic resistance among bacteria isolated from humans and livestock reflected among bacteria isolated from wildlife and natural environments? That...
Cruise report
IceCube − the neutrino telescope at the South Pole
The IceCube-lab (foreground) has two stories. Cables from the detector enter through the two pillars on either side to reach the computer cluster on the upper floor. Photo: Klas Hultqvist What does the dark matter in the universe consist of? There...