Temporal Change of Radiocarbon Reservoir Effect in Sugan Lake, Northwest China during the Late Holocene
Temporal Change of Radiocarbon Reservoir Effect in Sugan Lake, Northwest China during the Late Holocene
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DOI：
10.1017/s0033822200055909
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发表时间：
2009
期刊：
影响因子：
8.3
通讯作者：
Aifeng Zhou;Fa-hu Chen;Zongli Wang;Mei-lin Yang;M. Qiang;Jiawu Zhang
中科院分区：
文献类型：
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作者：
Aifeng Zhou;Fa-hu Chen;Zongli Wang;Mei-lin Yang;M. Qiang;Jiawu Zhang
许多湖泊年代学记录受到放射性碳储层效应的影响。采用连续、精确的纹层年代学方法，结合加速器质谱（AMS）14 C测年方法，对苏干湖沉积物进行了年龄测定，并对过去的14 C水库效应进行了定量分析。水库年龄从4340年到2590年不等，由于14 C-贫水在全新世晚期。然而，在小冰期（LIA），14 C水库年龄是相对稳定的。研究表明，全新世晚期14 C库年龄可能是由该时期的水文和气候变化驱动的。因此，在西北地区古气候和古湖泊研究中，应特别注意用独特的14 C储层年龄来校正14 C储层效应。
Many lacustrine chronology records suffer from radiocarbon reservoir effects. A continuous, accurate varve chronology, in conjunction with accelerator mass spectrometry (AMS) 14C dating, was used to determine the age of lacustrine sediment and to quantify the past 14C reservoir effect in Sugan Lake (China). Reservoir age varied from 4340 to 2590 yr due to 14C-depleted water in the late Holocene. However, during the Little Ice Age (LIA), 14C reservoir age was relatively stable. According to this study, 14C reservoir age in the late Holocene may be driven by hydrological and climatic changes of this period. Therefore, special caution should be paid to the correction of the 14C reservoir effect by a unique 14C reservoir age in paleoclimatic and paleolimnological study of northwest China.