Spheroidal carbonaceous particles (SCPs) are carbonaceous fly ash particles produced solely from industrial fossil fuel combustion. SCPs in sediments can be an indicator of past industrialization. We examined the sedimentary SCP record in Beppu Bay, southern Japan, and compared this record to historical trends of industrial activity and monitoring data for atmospheric pollutions in the region. Beppu Bay has varved sediments in the absence of bioturbation, providing an ideal situation for SCP study. Our results show that the temporal variation of SCP deposition is consistent with the trends of industrial activity and the temporal variation of status of atmospheric pollution. We conclude that undisturbed sediments such as Beppu Bay sediments have SCP records that adequately represent historical trends of industrial activity and atmospheric pollution in detail. These findings support that SCPs are a potential marker for the Anthropocene, characterized by industrialization.

中文翻译：

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日本南部别府湾的沉积球状碳质颗粒 (SCPs) 记录与工业活动和大气污染的历史趋势对比：SCPs 作为人类世工业化标志的​​进一步证据

球形碳质颗粒 (SCP) 是仅由工业化石燃料燃烧产生的碳质飞灰颗粒。沉积物中的 SCP 可以作为过去工业化的指标。我们检查了日本南部别府湾的沉积 SCP 记录，并将该记录与该地区工业活动的历史趋势和大气污染监测数据进行了比较。别府湾在没有生物扰动的情况下有波浪状沉积物，为 SCP 研究提供了理想的环境。我们的研究结果表明，SCP沉降的时间变化与工业活动的趋势和大气污染状况的时间变化是一致的。我们得出的结论是，别府湾沉积物等原状沉积物的 SCP 记录足以详细代表工业活动和大气污染的历史趋势。这些发现支持 SCP 是人类世的潜在标志，以工业化为特征。