A new ΔR value for the southern North Sea and its application in coastal research

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-01-20 DOI:10.1017/njg.2020.19

D. Enters, Kristin Haynert, A. Wehrmann, H. Freund, F. Schlütz

引用次数: 7

Abstract

Abstract 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.

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北海南部的ΔR新价值及其在海岸研究中的应用

摘要利用加速器质谱法(AMS)对公元1889年在Wangerooge岛附近采集的甲壳(Cerastoderma edule, Linnaeus 1767)和贻贝(Mytilus edulis, Linnaeus 1758)进行放射性碳(14C)测年，得出瓦顿海地区新的局部校正因子ΔR为−85±17 14C年。这一数值大大高于从北海得到的分散数据，这些数据是由北极现存岛屿的爆炸前生长环(Linnaeus 1767)获得的。这可以通过将14c耗尽的陆地碳纳入壳材料来解释，这补偿了大气和浅海水域之间二氧化碳的强化交换，例如潮汐流。此外，在沿海研究中应用ΔR新值的两个例子，更深入地了解了瓦登海双壳类贝壳保存的动态，以及进一步研究澄清全新世Mya arenaria (Linnaeus 1758)重新引入欧洲水域的必要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.