(Supplementary Table S1) Radiocarbon age of sediment core GeoB6518-1

Sample 5-15 cm could not be calibrated due to the presence of bomb-derived radiocarbon. Therefore, the core-top was set to zero age.

由于核爆成因放射性碳（bomb-derived radiocarbon）的存在，5-15厘米的岩芯样品无法完成年代校准，因此将该岩芯顶部的年代设定为零。