Calculated reservoir ages using paired AMS ^<14>C and MC-ICP-MS U-Th dating of foraminifera test, implications for paleoceanography

在计算历法年龄之前，必须对岩心样品浮游有孔虫的AMS14C年龄进行校正，以消除地表水14C年龄与同期大气14C年龄的差异。这是因为深海的水与大气的平衡不平衡，导致海洋含碳物质比与大气平衡形成的物质显得更古老。利用配对的AMS 14C和MC-ICP-MS U-Th对赤道东太平洋少量有孔虫测试进行定年，计算了储层年龄。结果表明，50年间水库年龄明显减小。

AMS14C age of planktonic foraminifera from core samples must be corrected for differences between the 14C age of surface water and the contemporaneous atmosphere prior to calculation of a calendar age. This is because the waters of the deep ocean are out of equilibrium with respect to the atmosphere causing marine carbon-containing material to appear older than material formed in equilibrium with the atmosphere. Reservoir ages have been calculated using paired AMS 14C and MC-ICP-MS U-Th dating of small amounts of foraminifera tests from the eastern equatorial Pacific. The results show a marked reduction in reservoir age during 50 kyrs.