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Interactive comment on “Bispectra of climate cycles show how ice ages are fuelled” by Diederik Liebrand and Anouk T. M. de Bakker

The authors present an extensive and systematic application of bispectral analysis to the LR04 benthic foraminifera stack. Bispectral analysis allows one to evidence socalled transfers of energy between different frequencies, and may therefore provide support for interpreting non-linear phenomena known to occur in a system of which we can observe time series. Sections 1 and 2 are devoted to context and methodology, and the main results are given in section 3. Section 4 briefly comments on the suitability of the approach, and section 5 suggests possible climate mechanisms.