In the DFG-funded Emmy Noether project the "sea spray" effect, caused by marine aerosols, in the isotope signature of recent and archaeological environmental samples (plants, soil), animals and humans from the Baltic and North Sea coasts will be investigated by the analysis of stable and radiogenic isotope systems of various components (e. g. collagen, apatite, sulfate, cellulose), radiocarbon analyses and (trace) element/ion analysis. The resulting complex data will be interpreted with the aid of methods from the field of "machine learning". The investigation of recent samples allows quantification, modeling and mapping of the "sea spray" effect. In order to be able to correctly interpret the isotope signature of archaeological samples, the "sea spray" mechanism and the "sea spray" effect in the isotope signature of recent plants and mammals must first be understood in Phase I of the project. In Phase II, the knowledge gained during Phase I will be applied to archaeological finds. This will serve to predict the "sea spray" effect and to correct the isotopic fingerprints of archaeological samples.
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