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首页> 外文期刊>Geophysical Research Letters >A 600-year annual ~(10)Be record from the NGRIP ice core, Greenland
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A 600-year annual ~(10)Be record from the NGRIP ice core, Greenland

机译:来自格陵兰NGRIP冰芯的600年历史〜(10)

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摘要

Despite the extensive use of ~(10)Be as the most significant information source on past solar activity,there has been only one record (Dye-3, Greenland)providing annual resolution over several centuries. Here we report a new annual resolution ~(10)Be record spanning the period 1389-1994 AD, measured in an ice core from the NGRIP site in Greenland. NGRIP and Dye-3 ~(10)Be exhibits similar long-term variability, although occasional short term differences between the two sites indicate that at least two high resolution The records are needed to assess local variations and to confidently reconstruct past solar activity. A comparison with sunspot and neutron records confirms that ice core ~(10)Be reflects solar Schwabe cycle variations, and continued ~(10)Be variability suggests cyclic solar activity throughout the Maunder and Spiker grand solar activity minima.Recent The values are low; however, they do not indicate unusually high recent solar activity compared to the last 600 years.
机译:尽管〜(10)Be被广泛用作过去太阳活动的最重要信息源,但只有一个记录(Dye-3,格陵兰岛)提供了几个世纪的年度分辨率。在这里,我们报告了一个新的年度分辨率〜(10)Be记录,跨度为1389-1994 AD,是在格陵兰NGRIP站点的冰芯中测得的。 NGRIP和Dye-3〜(10)Be表现出相似的长期变异性,尽管两个地点之间的短期短期差异表明至少需要两个高分辨率。记录需要评估局部变化和自信地重建过去的太阳活动。与太阳黑子和中子记录的比较证实,冰芯〜(10)Be反映了太阳Schwabe周期的变化,并且持续〜(10)Be的可变性表明整个Maunder和Spiker大太阳活动最小值的循环太阳活动。但是,它们并不表示与过去600年相比,最近的太阳活动异常高。

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