C03_P03

Variations in the radiocarbon calibration curves around known and suspected Δ¹⁴C excursions

Rakowski A¹, Pawlyta J², Krąpiec M², Huels M³, Molnar M⁴

¹SUT, Gliwice, Poland, ²AGH, Kraków, Poland, ³Uni Kiel, Kiel, Germany, ⁴ATOMKI, Debrecen, Hungary

The search for and analysis of rapid Δ¹⁴C changes in the past has received much attention in recent years. In this paper, we will present the results of searching for rapid Δ¹⁴C changes in the raw data used to build radiocarbon calibration curves: IntCa20 and SHCal20 and attempts to identify them in rings of single trees from Poland. We collected information on the periods of occurrence of rapid changes identified by other authors and within our own review of Δ¹⁴C variability in raw data of calibration curves. For some of the periods we found, we were able to find research material in the form of tree trunks from areas of Poland. We determined the concentration of ¹⁴C in tree rings. In this paper we present a comparison of the obtained Δ¹⁴C for our samples and raw data and the IntCal20 curve itself.