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Found 8 results.

Organic carbon stocks and accumulation rates on the Norwegian continental margin

The dataset contains digital maps of organic carbon stocks (kg m⁻²) relating to the upper ten centimetres of the sediment column and ²¹⁰Pb-based organic carbon accumulation rates (g m⁻² yr⁻¹) of sediments on the Norwegian continental margin including the North, Norwegian, and Barents Seas. The results are presented as geo-referenced floating-point TIFF-files with a spatial resolution of 4 km and Lambert Azimuthal Equal-Area projection as spatial reference. Stocks were calculated based on spatially predicted organic carbon content and dry bulk density. Accumulation rates were calculated based on spatially predicted organic carbon content, dry bulk density and sediment accumulation rates. All three spatial models also derived prediction uncertainties and areas of applicability of the model (Meyer & Pebesma, 2021). Uncertainties were propagated by taking the square root of the sum of squared relative uncertainties. Areas of applicability of the organic carbon stocks and accumulation rates were calculated by multiplying individual areas of applicability.

Marine Seismic Survey Profiles (MSSP) (WMS)

During the period from 1974 to 2018 various cruises from BGR acquired seismic lines worldwide. The aim of these marine expeditions was a detailed survey of the geological structure.

Marine Seismic Survey Profiles (MSSP)

During the period from 1974 to 2023 various cruises from BGR acquired seismic lines worldwide. The aim of these marine expeditions were a detailed survey of the geological structure of seabed.

Raw data of physical oceanography during RV MARIA S. MERIAN cruise MSM97/2

Raw physical oceanography data was acquired by a ship-based Seabird SBE911+ CTD-Rosette system onboard RV MARIA S. MERIAN during research cruise MSM97/2. The CTD system is comprised of a Seabird SBE911Plus including dual respectively redundant sensor and pump packages. The SBE11plus Deck Unit remains on board in a laboratory and supplies on one hand power to the SBE9plus underwater unit, on the other hand data telemetry between the SBE9plus and a measurement PC. The SBE9plus underwater unit itself holds a pressure sensor and is interfacing with dual SEB3 temperature, SBE4 conductivity and SBE43 oxygen sensors and two SBE5 pumps to provide a pumped water supply past each sensor. The system also carries an optical FLNTU sensor to measure a combinations of back-scattering, turbidity, and chlorophyll-a. To quantify the photo-synthetically active radiation a PAR sensor is installed as well. Water sampling is supported via 24 Niskin water sample bottles holding 10L each, fired via a SBE32 carousel water sampler.

Revised age models and foraminiferal records obtained for the Last Interglacial period in six marine sediment cores

The dataset contains the revised age models and foraminiferal records obtained for the Last Interglacial period in six marine sediment cores: - the Southern Ocean core MD02-2488 (age model, sea surface temperatures, benthic d18O and d13C for the period 136-108 ka), - the North Atlantic core MD95-2042 (age model, planktic d18O, benthic d18O and d13C for the period 135-110 ka), - the North Atlantic core ODP 980 (age model, planktic d18O, sea surface temperatures, seawater d18O, benthic d18O and d13C, ice-rafted detritus for the period 135-110 ka), - the North Atlantic core CH69-K09 (age model, planktic d18O, sea surface temperatures, seawater d18O, benthic d18O and d13C, ice-rafted detritus for the period 135-110 ka), - the Norwegian Sea core MD95-2010 (age model, percentage of Neogloboquadrina pachyderma sinistral, sea surface temperatures, benthic d18O, ice-rafted detritus for the period 134-110 ka), - the Labrador Sea core EW9302-JPC2 (age model, percentage of Neogloboquadrina pachyderma sinistral, sea surface temperatures, benthic d18O for the period 134-110 ka).

Processed seismic data of Cruise BGR79/1 1979

During cruise BGR79 from 29th June to 3rd September 1979 the Federal Institute for Geosciences and Natural Resources (BGR) carried out marine seismic reflection surveys in the three separate areas of the North Atlantic Ocean (Norwegian Sea, Scotian Basin, and U.S. East Coast Area) with S.V. EXPLORA. Simultaneously gravity, magnetic and reflection seismic data were recorded on parts of the lines. In addition, 66 sono-buoys were deployed for seismic refraction data recording on various seismic lines in all three areas. A detailed survey in the Norwegian Sea took place in the time from 29th June to 15th July, 1979 between the southern Vøring Plateau, the Jan Mayen Fracture Zone, the Møre Basin and the Faeroe-Shetland escarpment during leg 1 of cruise BGR79. The data showed that the Møre Basin contains a small sub-basin in the western part, the West-Shetland Basin. Further seaward, an outer high as well as a zone of intrusions were imaged.

FP5-EESD, Biological Control of Harmful Algal Blooms in European Coastal Waters: Role of Eutrophication - BIOHAB

Objective: Biological control of Harmful Algal blooms in European coastal waters: role of eutrophication (BIOHAB). Problems to be solved: Harmful Algal Blooms (HAB) occur in many European marine waters and have increased in frequency concomitantly with a increased nutrient input from land. HABs have a devastating effect on the ecosystem and/or cause health problems in humans. Species of interest for BIOHAB belong to different taxonomic groups. Various algae belonging to these groups produce substances responsible for e g Paralytic Shellfish Poisoning and Diarrhetic Shellfish Poisoning. Some species are harmful in other ways, e g by creating oxygen deficiency. The success of HABs depends on several biological interactions, which are of a complex nature. The overall objective of BIOHAB is therefore to determine the interplay between (anthropogenic) eutrophication and biological control of the losses and gains of HABs. The ultimate goal is to find ways to manage phytoplankton algal blooms in European coastal waters in such a way that harmful species are avoided or at least that their negative effects are minimised. The co-operation involves several European countries, representing distinctly differing regions (the Baltic, the North Sea, coastal zone of Norway, the Mediterranean). Both the Helsinki (HELCOM) and Oslo Paris Commission (OPARCOM) have been established as intergovernmental organisations with as primary task the protection of the marine environments in the Baltic Sea and North Sea. BIOHAB will provide the necessary knowledge on HABs and their control within these commissions. Scientific objectives and approach: The scientific objectives are (1) To determine the susceptibility of HABs to biological control such as grazing (copepods, ciliates, hetero- and mixotrophic dinoflagellates) and/or infection (virus, bacteria, parasites) when growing under deficient as compared to sufficient nutrient conditions. (2) Investigate the release of infochemicals by HABs into the seawater with the aim to avoid grazing and infection. (3) To examine data sets of the general and unique patterns of growth and decay parameters of HAB-species in various coastal regions. (4) To develop a generic or species-specific model for the development of HABs and their mitigation. (5) To obtain and grow HAB species-specific pathogens (viruses, bacteria, parasites) which could potentially be used to terminate HABs (bio-control). The workplan combines laboratory and field experiments with in situ studies, to be carried out in 4 different European seas. This includes the low saline Baltic, the eutrophic N-controlled North Sea, the oligotrophic Norwegian Sea, and the P-limited Mediterranean Sea. Prime Contractor: Netherlands Institute for Sea Research, Department of Biological Oceanography; Den Burg.

FP4-ENV 2C, Effects of Climate Induced Temperature Change on Marine Coastal Fishes (CLICOFI)

Changes in the earth's climate through warming of the atmosphere have been predicted and concomitant negative consequences in many marine ecosystems are expected. Although the impact of decadal-scale variations by the coupled ocean-atmosphere system on marine communities and populations has been well documented (Cushing, 1982; Beamish, 1995; Bakun, 1996), causal relationships are largely obscure. Temperature changes can affect, directly or indirectly, marine populations during all life stages. To analyse and interpret these effects a profound synthesized knowledge of ecological and physiological processes is required. Within the framework of the European initiative ELOISE (European Land Ocean Interaction Studies) a project was designed to further our understanding of the past and present impact of climate induced temperature changes on fish populations through the combination of retrospective studies, field data analysis, ecological and physiological experiments, genetical investigations and modelling. We have selected two model species characterized by northern and southern distribution limits in the North Atlantic: eelpout (Zoarces viviparus), as a typical non-migrating inhabitant of the coastal zone, with a k-selektive reproduction strategy (viviparous) and cod (Gadus morhua), as an typical inhabitant of continent shelf with a high importance for fisheries. Both species have a boreal distribution, the southernmost distribution limits are in the Wadden Sea of the southern North Sea (eelpout) and in the northern part of the Biscay (cod). Accordingly, populations of the two species have adapted to temperature regimes in a latitudinal cline.

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