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The Heartbeat of the Oligocene Climate System

Palike, H., Norris, R. D., Herrle, J. O., Wilson, P. A., Coxall, Helen Katherine, Lear, Caroline Helen, Shackleton, N. J., Tripati, A. K. and Wade, B. S. 2006. The Heartbeat of the Oligocene Climate System. Science 314 (5807) , pp. 1894-1898. 10.1126/science.1133822

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Abstract

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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Earth and Ocean Sciences
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QE Geology
Publisher: AAAS
ISSN: 0036-8075
Last Modified: 04 Jun 2017 02:44
URI: http://orca-mwe.cf.ac.uk/id/eprint/11557

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