Figure 2: Determinism of the KNI-51 Cave and Dongge Cave records with comparison to previous studies.
From: See–saw relationship of the Holocene East Asian–Australian summer monsoon
(a) (red) KNI-51 cave and (b) (green) Dongge Cave (DA). The determinism is calculated from the corresponding transformation costs time series and statistical significance is indicated by the two horizontal bands (see Methods section for details). High (low) determinism values correspond to wet (dry) monsoon regimes. The coloured bands (blue indicating wet regimes; brown, dry) provide a comparison of our findings with those of previous, qualitative studies. In the text we provide a detailed discussion of previously unidentified or incorrectly identified wet and dry regimes uncovered by our method. (black) Determinism of the solar activity proxy Δ14C time series. Cross-correlation between the determinism of the solar activity proxy Δ14C time series and KNI-51 time series is r=−0.32, and DA time series is r=0.29 (see Methods section for details).
