The Solar Component of the Atmospheric 14 C Record
The Solar Component of the Atmospheric 14 C Record
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大气 14 C 记录的太阳成分
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
T. Braziunas
中科院分区：
文献类型：
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作者：
M. Stuiver;T. Braziunas
在11年的太阳周期中，宇宙线通量的日磁调制会导致14C的年产生量发生变化。太阳黑子、极光和10Be的记录表明，世纪式的14C振荡也主要受太阳的影响，而不是气候。根据碳库模型从树轮中的14C含量得出的过去9700年间十年和二十年的14C产生率历史表明，至少有两种重复的太阳变化模式。14C产生率在30%达到峰值并持续约280年的增长(“Sporer型”)以不规律的间隔重复8次，而类似的波动仅持续约200年(“蒙德型”)被发现9次。大气Δ14C和14C产生率的年代际和年代际记录，剔除了长期趋势，以1000a为间隔显示。
Heliomagnetic modulation of the cosmic ray flux causes variations in annual 14C production during the 11 yr solar cycle. Sunspot, auroral, and 10Be records suggest that century type 14C oscillations are also primarily influenced by the sun rather than climate. The history of decadal and bi-decadal 14C production rates during the past 9700 years, as derived from the 14C content in tree-rings using a carbon reservoir model, indicates at least two recurring patterns of solar change. Increases in 14C production rate that peak at 30% and last ca. 280 years (“Sporer types”) are repeated 8 times at irregular intervals while similar fluctuations that last only ca. 200 years (“Maunder types”) are found 9 times. The decadal and bi-decadal records of atmospheric Δ14C and model-derived 14C production rates, with long-term trend removed, are displayed in 1000 yr intervals.