Spectral analysis of late Pleistocene-Holocene sediments |
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| Authors: | Nicklas G Pisias JPaul Dauphin Constance Sancetta |
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| Institution: | 1. CLIMAP, School of Oceanography, Oregon State University, Corvallis, Oregon 97331 USA;2. CLIMAP, Department of Geological Sciences, Brown University, Providence, Rhode Island 02912 USA |
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| Abstract: | Spectral analysis of deep-sea sediments indicates that the fluctuations in compositional parameters are not random fluctuations with time. Spectra show significant peaks representing periodicities in the data of 380, 1300, and 2600 years. Two of these periods are similar to periods reported in 14C fluctuations. Analysis of a paleotemperature curve from the North Atlantic shows that the characteristics of the fluctuations within interglacial and glacial stages of the climate are similar, and that the spectrum has a significant peak at 2600 years. |
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