Figure 5

Time dependent spectral density and correlation coefficient as a function of lag. (a) Spectral characteristics of the δ¹⁸O record (LR04)³⁰ and (b) spectral characteristics of the volcanic eruption record during the MPT (red line) and post-MPT (blue line). Gray bars are the same as in Fig. 4a. (c) Correlation coefficient between the δ¹⁸O and eruption records during the MPT (red line) and post-MPT (blue line). The correlation coefficient during the MPT is relatively small for all time lags and shows a complicated behavior, whereas the post-MPT correlation coefficient has a maximum of −0.51 at a time lag of ∼13 kyr.