Arctic Antarctica

Expedition: LOMROG II

31 July 2009 - 10 September 2009 Arctic Ocean

Bathymetric data acquisition

During LOMROG II Oden travelled a total of 3 402 nautical miles. Multibeam bathymetric data as well as sub bottom profiler data were recorded continuously along the ship’s passage.

Seismic data acquisition

The second priority of the cruise was to acquire seismic data in the Amundsen and Makarov Basins on both sides of the Lomonosov Ridge. In order to work successfully in the harsh conditions, the seismic equipment had to be modified.

Oceanography – CTD measurements

The primary purpose of the oceanographic work during LOMROG II was thus to supply representative, near real time vertical profiles of sound velocity derived from CTD measurements of temperature, salinity and pressure as a function of depth.

Microbial respiration in Arctic sea ice

This project seeks to establish how large a role microbial respiration plays in determining the concentration of CO2 within both first-year and multi-year sea ice, and thus influencing the exchange of CO2 between sea ice and the atmosphere. Ice cores were retrieved at a total of 14 ice stations.

Bacterial communities and bioactive bacteria

This study addresses the investigation of marine bacterial communities in largely unexplored north polar habitats, as well as the isolation of bioactive bacteria from these locations.

DNA of the polar seas

The overall goal of the project is to compare and establish a baseline for the genetic repertoire of microbial communities of various polar region environments: The deepest and coldest parts of the oceans, snow samples and sea ice cores.

Past environmental changes in central Arctic Ocean

On this cruise the aim was to obtain high resolution sediment records from the Lomonosov Ridge in the central Arctic that can reveal something about the deep water circulation in the Arctic basins, the sea ice history and the connection to the huge ice sheets that developed on the American and Eurasian landmasses surrounding the Arctic Ocean.

Zooplankton dynamics in Arctic Ocean ecology

Plankton are organisms defined as passive drifters of the sea. Through the process of photosynthesis phytoplankton convert solar energy, carbon dioxide, water and nutrients into organic compounds.

LOMROG II – expedition summary

The LOMROG II cruise was organized in cooperation with the Swedish Polar Research Secretariat and the Canadian Continental Shelf Project.