IntCal04 terrestrial radiocarbon age calibration, 0-26 cal kyr BP
IntCal04 terrestrial radiocarbon age calibration, 0-26 cal kyr BP
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DOI：
10.1017/s0033822200032999
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发表时间：
2004-01-01
期刊：
影响因子：
8.3
通讯作者：
Weyhenmeyer, CE
中科院分区：
文献类型：
--
作者：
Reimer, PJ;Baillie, MGL;Weyhenmeyer, CE
建立了一种新的放射性碳年龄转换为校准（cal）年龄的校准曲线，并得到国际上的认可，以取代ImCal98，该曲线从0-24 cal kyr BP扩展到现在，0 cal BP = AD 1950)。新的陆地样品校准数据集从0-26 cal kyr BP扩展，但分辨率远高于ImCal98的11.4 cal kyr BP。树木年轮样品的年代为0-12.4 calkyr BP。在树木年轮结束后，海洋记录（珊瑚和有孔虫）的数据通过特定地点的海洋储层校正转换为大气当量，以提供12.4-26.0 cal kyr BP的陆地校准。相对于ImCal98的一个重大改进是引入了一种基于随机游走模型的连贯统计方法，该方法考虑了日历年龄和C-14年龄的不确定性，以计算潜在的校准曲线（Buck和Blackwell，这一期）。本文讨论了树木年轮数据集、不确定性来源和区域偏移量。简要讨论了表层混合层（marine 04）海洋样品的海洋数据集和校准曲线，但详细内容请参见休根等人（本期a）。目前，我们不建议校准超过26 calkyr BP；然而，另一篇论文（van der Plicht et al.，本期）对潜在的校准数据集进行了比较。
A new calibration curve for the conversion of radiocarbon ages to calibrated (cal) ages has been constructed and internationally ratified to replace ImCal98, which extended from 0-24 cal kyr BP (Before Present, 0 cal BP = AD 1950). The new calibration data set for terrestrial samples extends from 0-26 cal kyr BP, but with much higher resolution beyond 11.4 cal kyr BP than ImCal98. Dendrochronologically-dated tree-ring samples cover the period from 0-12.4 cal kyr BP. Beyond the end of the tree rings, data from marine records (corals and foraminifera) are converted to the atmospheric equivalent with a site-specific marine reservoir correction to provide terrestrial calibration from 12.4-26.0 cal kyr BP. A substantial enhancement relative to ImCal98 is the introduction of a coherent statistical approach based on a random walk model, which takes into account the uncertainty in both the calendar age and the C-14 age to calculate the underlying calibration curve (Buck and Blackwell, this issue). The tree-ring data sets, sources of uncertainty, and regional offsets are discussed here. The marine data sets and calibration curve for marine samples from the surface mixed layer (Marine 04) are discussed in brief, but details are presented in Hughen et al. (this issue a). We do not make a recommendation for calibration beyond 26 cal kyr BP at this time; however, potential calibration data sets are compared in another paper (van der Plicht et al., this issue).