Abstract—

The data on the content of the ¹⁴C cosmogenic isotope in the natural archives make it possible to study the solar activity (SA) in the past centuries and millennia. However, the ¹⁴C content in the natural archives is influenced not only by the intensity of incoming galactic cosmic rays (GCRs), which are modulated by the interplanetary magnetic field and vary according to SA variations; changes in the geomagnetic field and in the Earth’s climate also affect radiocarbon data. In particular, climate variation leads to the redistribution of radiocarbon between natural reservoirs. In the 19th century, increased anthropogenic activity was also reflected in radiocarbon data. This article presents the results of the reconstruction of the rate of ¹⁴C production under the influence of GCRs with allowance for the above factors. It is shown that the rate of radiocarbon release from the deep ocean into the surface layer and the atmosphere has increased since the second quarter of the 19th century. Apparently, this process is natural.

中文翻译：

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反映太阳活动变化，自然气候变化和人为活动的18世纪晚期的放射性碳数据

摘要—

有关自然档案中¹⁴ C宇宙成因同位素含量的数据，使人们有可能研究过去几个世纪和千年以来的太阳活动（SA）。然而，自然档案中的¹⁴ C含量不仅受到入射银河宇宙射线（GCR）强度的影响，GCR受行星际磁场调制并根据SA变化而变化。地磁场和地球气候的变化也会影响放射性碳数据。特别是，气候变化导致放射性碳在天然储层之间重新分布。在19世纪，放射性碳数据也反映出人为活动的增加。本文介绍了¹⁴比率的重建结果考虑到上述因素，在GCR的影响下生产C。研究表明，自19世纪第二个季度以来，从深海释放到表层和大气中的放射性碳的速率有所增加。显然，此过程是自然的。