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Mysterious abrupt carbon-14 increase in coral contributed by a comet
Liu, Y (Liu, Yi)[ 1 ]; Zhang, ZF (Zhang, Zhao-feng)[ 2 ]; Peng, ZC (Peng, Zi-cheng)[ 1 ]; Ling, MX (Ling, Ming-xing)[ 2 ]; Shen, CC (Shen, Chuan-chou)[ 3 ]; Liu, WG (Liu, Wei-guo)[ 4 ]; Sun, XC (Sun, Xiao-chun)[ 5 ]; Shen, CD (Shen, Cheng-de)[ 2 ]; Liu, KX (Liu, Ke-xin)[ 6,7 ]; Sun, WD (Sun, Weidong)[ 8 ]
2014-01-16
发表期刊SCIENTIFIC REPORTS
卷号4页码:3728
文章类型期刊论文
摘要

A large and sudden increase in radiocarbon (C-14) around AD773 are documented in coral skeletons from the South China Sea. The C-14 increased by similar to 15 parts per thousand during winter, and remain elevated for more than 4 months, then increased and dropped down within two months, forming a spike of 45 parts per thousand high in late spring, followed by two smaller spikes. The C-14 anomalies coincide with an historic comet collision with the Earth's atmosphere on 17 January AD 773. Comas are known to have percent-levels of nitrogen by weight, and are exposed to cosmic radiation in space. Hence they may be expected to contain highly elevated C-14/C-12 ratios, as compared to the Earth's atmosphere. The significant input of C-14 by comets may have contributed to the fluctuation of C-14 in the atmosphere throughout the Earth's history, which should be considered carefully to better constrain the cosmic ray fluctuation.

DOI10.1038/srep03728
收录类别SCIE
语种英语
引用统计
被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9754
专题加速器质谱中心
通讯作者Liu, Y (Liu, Yi)[ 1 ]; Zhang, ZF (Zhang, Zhao-feng)[ 2 ]
作者单位1.CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science andTechnology of China, Hefei 230026, China;
2.State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry,The Chinese Academy of Sciences, Guangzhou 510640, China;
3.High-Precision Mass Spectrometry and Environment ChangeLaboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei 10617, Taiwan;
4.State Key Laboratory ofLoess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi’an 710075, China;
5.Institutefor the History of Natural Sciences, The Chinese Academy of Sciences, Beijing 100190, China;
6.State Key Laboratory of NuclearPhysics and Technology & Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China;
7.CAS KeyLaboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, The Chinese Academy of Sciences, Guangzhou510640, China
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GB/T 7714
Liu, Y ,Zhang, ZF ,Peng, ZC ,et al. Mysterious abrupt carbon-14 increase in coral contributed by a comet[J]. SCIENTIFIC REPORTS,2014,4:3728.
APA Liu, Y .,Zhang, ZF .,Peng, ZC .,Ling, MX .,Shen, CC .,...&Sun, WD .(2014).Mysterious abrupt carbon-14 increase in coral contributed by a comet.SCIENTIFIC REPORTS,4,3728.
MLA Liu, Y ,et al."Mysterious abrupt carbon-14 increase in coral contributed by a comet".SCIENTIFIC REPORTS 4(2014):3728.
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