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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Continuous marine radiocarbon reservoir calibration and the ~(13)C Suess effect in the Irish Sea: Results from the first multi-centennial shell-based marine master chronology
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Continuous marine radiocarbon reservoir calibration and the ~(13)C Suess effect in the Irish Sea: Results from the first multi-centennial shell-based marine master chronology

机译：连续的海洋放射性碳储层校准和爱尔兰海中的〜（13）C Suess效应：第一个基于百年壳的海洋主年代学的结果

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The identification in various proxy records of periods of rapid (decadal scale) climate change over recent millennia, together with the possibility that feedback mechanisms may amplify climate system responses to increasing atmospheric CO _2, highlights the importance of a detailed understanding, at high spatial and temporal resolutions, of forcings and feedbacks within the system. Such an understanding has hitherto been limited because the temperate marine environment has lacked an absolute timescale of the kind provided by tree-rings for the terrestrial environment and by corals for the tropical marine environment. Here we present the first annually resolved, multi-centennial (489-year), absolutely dated, shell-based marine master chronology. The chronology has been constructed by detrending and averaging annual growth increment widths in the shells of multiple specimens of the very long-lived bivalve mollusc Arctica islandica, collected from sites to the south and west of the Isle of Man in the Irish Sea. The strength of the common environmental signal expressed in the chronology is fully comparable with equivalent statistics for tree-ring chronologies. Analysis of the ~(14)C signal in the shells shows no trend in the marine radiocarbon reservoir correction (ΔR), although it may be more variable before ～ 1750. The δ ~(13)C signal shows a very significant (R ~2 = 0.456, p < 0.0001) trend due to the ~(13)C Suess effect.
机译：在各种替代记录中对近千年来快速（十年尺度）气候变化时期的识别，以及反馈机制可能放大气候系统对大气CO _2增加的响应的可能性，突显了在高空间和高海拔地区进行详细了解的重要性。系统内强制和反馈的时间分辨率。迄今为止，这种理解受到限制，因为温带的海洋环境缺乏绝对的时间尺度，而这种绝对的时间尺度是由树轮为陆地环境和由珊瑚为热带海洋环境提供的。在这里，我们介绍了第一个每年解析的，跨世纪的（489年），绝对过时的，基于壳的海洋大师年表。该年表是通过对非常长寿的双壳软体动物Arctica islandica的多个标本的壳中的年增长增量宽度进行去趋势化和平均化而成的，这些标本是从爱尔兰海曼岛南部和西部的站点收集的。以时间顺序表示的常见环境信号的强度可以与树木年轮时间顺序的等效统计数据完全媲美。对壳中的〜（14）C信号进行分析后，尽管在〜1750年前它的变化可能更大，但海洋放射性碳储层校正（ΔR）却没有变化。δ〜（13）C信号显示出非常显着的（R〜 2 = 0.456，p <0.0001）趋势归因于〜（13）C Suess效应。

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