Accelerator mass spectrometry (AMS) radiocarbon (14C) dating of Cerastoderma edule (Linnaeus 1767) and Mytilus edulis (Linnaeus 1758) shells sampled in AD 1889 near the island of Wangerooge gave a new local correction factor ΔR of −85 ± 17 14C years for the Wadden Sea area. The value is considerably higher than the available scattered data from the North Sea, which were obtained from pre-bomb growth rings of living Arctica islandica (Linnaeus 1767). This can be explained by the incorporation of 14C-depleted terrestrial carbon into the shell material which compensates the intensified exchange of CO2 between atmosphere and shallow coastal water, e.g. by tidal currents. Additionally, two examples of application of the new ΔR value in coastal research give deeper insights into the dynamics of bivalve shell preservation in the Wadden Sea and the need for further research to clarify the Holocene reintroduction of Mya arenaria (Linnaeus 1758) into European waters.

中文翻译：

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北海南部新的ΔR值及其在海岸研究中的应用

加速器质谱 (AMS) 放射性碳 (14C) 约会角叶虫（林奈 1767 年）和贻贝(Linnaeus 1758) 于公元 1889 年在旺格罗格岛附近采集的炮弹给出了一个新的局部校正因子 ΔR 为 -85 ± 1714瓦登海地区为 C 年。该值大大高于来自北海的可用分散数据，这些数据来自爆炸前的生命年轮北冰洋（林奈 1767 年）。这可以通过加入14碳耗尽的陆地碳进入壳材料，补偿了 CO 的强化交换2在大气和浅海沿岸水之间，例如通过潮汐流。此外，还有两个应用新Δ的例子R沿海研究的价值可以更深入地了解瓦登海双壳贝壳保存的动态以及需要进一步研究以阐明全新世重新引入Mya arearia（林奈 1758 年）进入欧洲水域。