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Geophysics that are shown as polygons. Sometimes the real position of geophysical lines cannot be shown because of confidentiality reasons and in this case a polygon that shows the approximate location is used instead. In other cases the geophysics is best represented by a polygon – for example for 3D seismic surveys.
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This data set is a compilation of all known marine geophysical survey lines. From this index, you can get an overview on available geological knowledge for European seas together with contact information for further details.
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This data set is a compilation of all known marine points with geological knowledge. From this index, you can get an overview on available geological knowledge for European seas together with contact information for further details.
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Seabed substrate map of the European marine areas (e.g. the Baltic Sea, the Greater North Sea, the Celtic Sea, the Iberian Coast, and the Mediterranean Sea within EU waters). The map is collated and harmonized from seabed substrate information within the EMODnet Geology project. Where necessary, the existing seabed substrate classifications (of individual maps) have been translated to a scheme that is supported by EUNIS. This EMODnet reclassification scheme includes at least five seabed substrate classes. Four substrate classes are defined on the basis of the modified Folk triangle (mud to sandy mud; sand; coarse sediment; and mixed sediment) and one additional substrate class (rock and boulders) was included by the project team. If the original seabed substrate dataset has enabled more detailed substrate classification, classifications with 7 and 16 substrate classes might be available. The EMODnet-Geology project started in 2013 with 36 marine departments of the geological surveys of Europe, with an objective to assemble marine geological information from all European sea areas. Note: The data may include some errors e.g. data discontinuities.
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Sedimentation rates are part of EMODnet (European Marine Observation and Data network) Geology, Work Package 3 (WP3) Seabed substrate. The objective of WP3 is to compile all available seabed substrate information on a scale of 1:100 000 or finer from all European marine areas, and to update sedimentation rate data collected in the previous phases. WP3 has compiled and harmonized available information on the rate of sedimentation on the seafloor. The information on sedimentation rates for recent sediments is presented as point-source information. Estimations of modern sedimentation rates (centimetres/year) can be based e.g. on established historical records of anthropogenic radionuclides (e.g. 137Cs and 241Am), polychlorinated biphenyls (PCBs), lead (Pb) and stable lead isotope (206/207Pb ratios). Sedimentation rate estimations can be based also on varve/laminae counting, radionuclide 210Pb and 14C decay dating methods. In addition stratigraphic marker horizons, like in the Baltic Sea, horizons formed by documented Major Baltic Inflow (MBIs) events (Moros et al. 2017), can be used in the estimations. Project partners have delivered information on sedimentation rates available in their national waters including their EEZ. The focus is on the present-day sedimentation rates. That means sediment accumulation to the seabed over the past decades, since AD 1900 or so.