Short-term fluctuations in regional radiocarbon reservoir age recorded in coral skeletons from the Ryukyu Islands in the north-western Pacific
Short-term fluctuations in regional radiocarbon reservoir age recorded in coral skeletons from the Ryukyu Islands in the north-western Pacific
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DOI：
10.1002/jqs.2923
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发表时间：
2017-01-01
影响因子：
2.3
通讯作者：
Aze, Takahiro
中科院分区：
文献类型：
--
作者：
Hirabayashi, Shoko;Yokoyama, Yusuke;Aze, Takahiro
放射性碳（C-14）测年是古气候学、古地震学和考古学研究中确定样品年龄的一种广泛使用的有力工具。海洋样品的C-14年龄通常需要对当地储层年龄（Delta R）进行校正。尽管中低纬度地区的Delta R随时间而变化，但这些地区的Delta R时空重建很少发表。在这里，我们报告新的和以前发表的三角洲R数据为20世纪初至1950年从日本南部黑潮地区的珊瑚骨骼。这里提供的数据显示，从20世纪初到20世纪40年代，在该地区的放射性碳年龄的校准和理解的关系，在西太平洋的三角洲R与厄尔尼诺-南方涛动和太平洋年代际涛动的三角洲R的一个显着的正到负的转变，这具有重要意义。版权所有（C）2017约翰威利父子有限公司
Radiocarbon (C-14) dating is a widely used and powerful tool for determining the ages of samples in studies of palaeoclimatology, palaeoseismology and archaeology. C-14 ages of marine samples often require correction for local reservoir age (Delta R). Although Delta R in the mid- to low latitudes has varied through time, few spatiotemporal reconstructions of Delta R have been published for those regions. Here we report on new and previously published Delta R data for the early 1900s to 1950 obtained from coral skeletons from the Kuroshio region off southern Japan. The data presented here show a marked positive-to-negative shift of Delta R from the early 1900s to the 1940s, which has important implications for calibration of radiocarbon ages in the region and for understanding the relationship of Delta R in the western Pacific with both the El Nino-Southern Oscillation and the Pacific Decadal Oscillation. Copyright (C) 2017 John Wiley & Sons, Ltd.