LOMROG III 2012

The Danish-Swedish expedition LOMROG III will take place in the Arctic Ocean north of Greenland 31 July–14 September 2012. The expedition will be carried out by the Danish Continental Shelf Project, in cooperation with the Swedish Polar Research Secretariat and the Swedish Maritime Administration. LOMROG III is a follow-up to the previous Danish-Swedish LOMROG expeditions that took place in 2007 and 2009. The Swedish icebreaker Odin will once again serve as the research platform.

The task of the Continental Shelf Project is to acquire the necessary data in order to document an extension of the continental shelf beyond 200 nautical miles in accordance with article 76 of the UN Convention of the Law of the Sea (UNCLOS). During the expedition bathymetric data will be acquired using Oden’s advanced multibeam echosounder, as well as collection of seismic and gravimetric data.

Danish scientists in biology, oceanography and marine microbiology will also participate in the expedition.

Research leader: Christian Marcussen, GEUS

Swedish research projects

Three Swedish research projects in paleoceanography and marine ecology will also participate in LOMROG III:

PAWS: Palaeoceanography of the Arctic – Water masses, Sea ice, and sediments

Researchers from Stockholm University are going to study the governing processes and feedback mechanisms of the sea ice and deep water circulation in the Arctic Ocean. Several new methods will be used to reconstruct how Arctic sea ice extent and circulation patterns have varied since the latest warm period around 125,000 years ago.

Research leader: Richard Gyllencreutz, Stockholm University

Marine diazotrophic diversity in the polar oceans and its contribution to global nitrogen cycling

Researchers from Stockholm University will collect water samples to analyse and measure nitrogen fixation in hypersaline brine, seawater, and melting ponds on ice and snow. Marine diazotrophs (nitrogen-fixing bacteria and cyanobacteria) are of documented significance in global nitrogen cycling. However, their significance in polar regions are largely unknown, despite the fact that nitrogen fixation is a major source of nitrogen input in polar terrestrial and freshwater systems.

Research leader: Pauline Snoeijs, Stockholm University

CHRONOLOGY

20 July: Icebreaker Oden departs Helsingborg, Sweden, for transit to Longyearbyen

30 July: Oden arrives in Longyearbyen, Spitsbergen, Norway

31 July: The expeditionen begins

14 September: The expedition ends

The expedition will begin and end in Longyearbyen, Spitsbergen.

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