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Harsh Raj¹, Yael Ehrlich², Lior Regev²

¹D-REAMS Radiocarbon Laboratory, Scientific Archaeology Unit, Weizmann Institute of Science, Rehovot, Israel. harsh.raj@weizmann.ac.il.

Scientific reports

|November 2, 2023

概括

大气炸弹的放射性碳变异为约会和追踪提供了洞察力. 以色列的一项研究揭示了区域放射性碳水平,并强调需要谨慎解释橄木放射性碳年龄.

科学领域:

放射性碳年代和环境追踪使用炸弹放射性碳同位素.

背景情况:

大气炸弹放射性碳 (Δ¹⁴C) 呈现空间和时间变化,使其成为一个有价值的追踪器和约会工具.
越来越多的 Δ¹⁴C 记录正在全球范围内澄清这些变化.

研究的目的:

为了分析来自以色列北部松树的Δ14C记录.
为了将这个记录与附近的橄树的Δ14C值进行比较.
评估对放射性碳测年准确性的影响,特别是对于橄木.

主要方法:

从松树样本中收集和分析Δ14C数据.
松树的Δ14C水平与已建立的北半球区域 (NH1和NH2) 的比较.
在松树和橄树之间对Δ14C记录进行比较分析.

主要成果:

北以色列松的Δ14C水平与北半球1区 (NH1) 相比,更接近于2区 (NH2).
橄木生长季节的每年显著变化通过 Δ14 C 分析被检测出来.
与IntCal校准曲线相比,橄木的放射性碳年龄可能会出现偏移.

结论:

该研究为以色列北部提供了区域 Δ 14 C 数据,有助于更清楚地了解炸弹放射性碳分布.
橄树生长季节的年度变化可能会影响放射性碳测年准确性.
来自橄木的放射性碳年龄需要仔细解释,并根据IntCal.Cal等校准曲线进行潜在的调整.

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