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The heartbeat of the Oligocene climate system

Pälike, H., Norris, R.D., Herrle, J.O., Wilson, P.A., Coxall, H.K., Lear, C.H., Shackleton, N.J., Tripati, A.K. and Wade, B.S. (2006) The heartbeat of the Oligocene climate system Science, 314, (5807), pp. 1894-1898. (doi:10.1126/science.1133822).

Record type: Article


A 13-million-year continuous record of Oligocene climate from the equatorial Pacific reveals a pronounced “heartbeat” in the global carbon cycle and periodicity of glaciations. This heartbeat consists of 405,000-, 127,000-, and 96,000-year eccentricity cycles and 1.2-million-year obliquity cycles in periodically recurring glacial and carbon cycle events. That climate system response to intricate orbital variations suggests a fundamental interaction of the carbon cycle, solar forcing, and glacial events. Box modeling shows that the interaction of the carbon cycle and solar forcing modulates deep ocean acidity as well as the production and burial of global biomass. The pronounced 405,000-year eccentricity cycle is amplified by the long residence time of carbon in the oceans.

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Submitted date: 14 August 2006
Published date: 22 December 2006


Local EPrints ID: 42935
ISSN: 0036-8075
PURE UUID: 9deb5578-ee3b-45ac-81e6-52e3768fd81e

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Date deposited: 22 Dec 2006
Last modified: 17 Jul 2017 15:20

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Author: H. Pälike
Author: R.D. Norris
Author: J.O. Herrle
Author: P.A. Wilson
Author: H.K. Coxall
Author: C.H. Lear
Author: N.J. Shackleton
Author: A.K. Tripati
Author: B.S. Wade

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