Palike, Heiko; Norris, Richard D.; Herrle, Jens O.; Wilson, Paul A.; Coxall, Helen K.; Lear, Caroline H.; Shackleton, Nicholas J.; Tripati, Aradhna K.; Wade, Bridget S. (2006): The heartbeat of the Oligocene climate system. American Association for the Advancement of Science, Washington, DC, United States, Science, 314 (5807), 1894-1898, georefid:2007-028755

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.
Coverage:
West: -135.2200 East: -135.2200 North: 8.5300 South: 8.5300
Relations:
Expedition: 199
Site: 199-1218
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=10.1126/science.1133822 (c.f. for more detailed metadata)
Data download: application/pdf
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