Fig. 6: Spectral analysis of magnetic susceptibility data from Interval I.
From: Younger Dryas drought and IPO climate modulation during the Antarctic Cold Reversal in New Zealand

Results of magnetic susceptibility data from Interval I using REDFIT-X. Data were converted to the time domain using radiocarbon dates, and Monte Carlo simulations were carried out to determine the confidence Intervals. Two cycles which exceed the 99% confidence limits are identified, which have frequencies of 70 and 52 years.