Fig. 3: Spectral analysis of the TT δ18O and cosmogenic nuclides record. | npj Climate and Atmospheric Science

Fig. 3: Spectral analysis of the TT δ18O and cosmogenic nuclides record.

From: Speleothem evidence of solar modulation on the south Asia monsoon intensity

Fig. 3

Results of power spectral analysis for (a) the compiled TT δ18O time series and (b) Cariaco Δ14C51 and GISP2 10Be27 records. Black (gray) line was calculated from 10Be data in 3000–8000 year BP (11,000–18,000 year BP). The cyclicities above the 95% (dashed) and 90% (dotted) confidence line are shown in red and blue.

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