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- W4206482965 abstract "Lead-210 from natural atmospheric fallout is widely used in multidisciplinary studies to date recent sediments. Some of the 210Pb-based dating models can produce historical records of sediment accumulation rates (SAR) and initial activity concentrations (A0). The former have been profusely used to track past changes in the sedimentary conditions. Both physical magnitudes are differently affected by model errors (those arising for the partial or null accomplishment of some model assumptions). This work is aimed at assessing the effects on SAR and A0 of model errors in the CRS, CS, PLUM and TERESA dating models, due to random variability in 210Pb fluxes, which is a usual sedimentary condition. Synthetic cores are used as virtual laboratories for this goal. Independently of the model choice, SARs are largely affected by model errors, resulting in some large and spurious deviations from the true values. This questions their general use for tracking past environmental changes. A0 are less sensitive to model errors and their trends of change with time may reflect real changes in sedimentary conditions, as it is shown with some real cores from varved sediments." @default.
- W4206482965 created "2022-01-25" @default.
- W4206482965 creator A5013490694 @default.
- W4206482965 date "2022-04-01" @default.
- W4206482965 modified "2023-10-16" @default.
- W4206482965 title "On the use of 210Pb-based records of sedimentation rates and activity concentrations for tracking past environmental changes" @default.
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- W4206482965 doi "https://doi.org/10.1016/j.jenvrad.2022.106823" @default.
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