The increasing interest in understanding anthropogenic impacts on the environment have led to a considerable number of studies focusing on sedimentary records for the last $\sim$ 100 - 200 years. Dating this period is often complicated by the poor resolution and large errors associated with radiocarbon (14C) ages, which is the most popular dating technique. To improve age-depth model resolution for the recent period, sediment dating with lead-210 ($^{210}$Pb) is widely used as it provides absolute and continuous dates for the last $\sim$ 100 - 150 years. The $^{210}$Pb dating method has traditionally relied on the Constant Rate of Supply (CRS, also known as Constant Flux - CF) model which uses the radioactive decay equation as an age-depth relationship resulting in a restrictive model to approximate dates. In this work, we compare the classical approach to $^{210}$Pb dating (CRS) and its Bayesian alternative (\textit{Plum}). To do so, we created simulated $^{210}$Pb profiles following three different sedimentation processes, complying with the assumptions imposed by the CRS model, and analysed them using both approaches. Results indicate that the CRS model does not capture the true values even with a high dating resolution for the sediment, nor improves does its accuracy improve as more information is available. On the other hand, the Bayesian alternative (\textit{Plum}) provides consistently more accurate results even with few samples, and its accuracy and precision constantly improves as more information is available.

翻译：对理解人类活动对环境的影响的兴趣日益浓厚,导致大量研究侧重于过去100至200年的沉积记录,这一时期往往由于分辨率差和与放射性碳(14C)年龄有关的大错误而变得复杂,这是最流行的约会技术。为了改进最近时期的年龄深度模型分辨率,广泛使用铅-210( ⁇ 210美元)及其巴伊萨替代物(cextit{Plum})的沉积方式,因为它提供了上一个100至150年的绝对和连续日期。 $210美元Pb的测算方法历来依赖不变供应率(CRS,又称为常态通量-CFF)模式,该模式使用放射性衰变异方程式作为年龄深度关系,导致一种与近似日期的限制性模式。在这项工作中,我们将典型方法与$210美元Pb约会(cRS)及其巴伊萨替代物(\ text{Plum}广泛使用。为此,我们根据三种不同的沉积过程制作了模拟值($210美元)Pb概况,即使符合CRS模型所设定的假设,更精确性也不符合CRS-lus 并且用最新数据分析结果。