论文标题
在圆顶富士（南极）冰芯中发现的11年，22年和〜90年的太阳能周期
Eleven-year, 22-year and ~90-year solar cycles discovered in nitrate concentrations in a Dome Fuji (Antarctica) ice core
论文作者
论文摘要
众所周知，冰芯可产生有关天文现象以及有关过去气候的信息。 We report time series analyses of annually resolved nitrate variations in an ice core, drilled at the Dome Fuji station in East Antarctica, corresponding to the period from CE 1610 to 1904. Our analyses revealed clear evidence of ~11, ~22, and ~90 year periodicities, comparable to the respective periodicities of the well-known Schwabe, Hale, and Gleissberg solar cycles.我们的结果首次表明，冰芯中的硝酸盐浓度可以用作纪律至多年时间尺度上过去太阳活动的代理。此外，即使在最低含量（1645-1715），几乎没有黑子，也在硝酸盐变化中检测到11年和22年的周期性。这一发现可能支持太阳能最小值期间太阳能发电机的循环行为。
Ice cores are known to yield information about astronomical phenomena as well as information about past climate. We report time series analyses of annually resolved nitrate variations in an ice core, drilled at the Dome Fuji station in East Antarctica, corresponding to the period from CE 1610 to 1904. Our analyses revealed clear evidence of ~11, ~22, and ~90 year periodicities, comparable to the respective periodicities of the well-known Schwabe, Hale, and Gleissberg solar cycles. Our results show for the first time that nitrate concentrations in an ice core can be used as a proxy for past solar activity on decadal to multidecadal time scales. Furthermore, 11-year and 22-year periodicities were detected in nitrate variations even during the Maunder Minimum (1645-1715), when sunspots were almost absent. This discovery may support cyclic behavior of the solar dynamo during the grand solar minimum.
