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Pälike, Heiko; Norris, Richard D; Herrle, Jens O; Wilson, Paul A; Coxall, Helen; Lear, Caroline H; Shackleton, Nicholas J; Tripati, Aradhna K; Wade, Bridget S (2006): Age models and stable isotope analysis on sediment core Site 199-1218 from the equatorial Pacific. PANGAEA,, Supplement to: Pälike, H et al. (2006): The Heartbeat of the Oligocene Climate System. Science, 314(5807), 1894-1898,

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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.
Related to:
Coxall, Helen; Wilson, Paul A; Pälike, Heiko; Lear, Caroline H; Backman, Jan (2005): Rapid stepwise onset of Antarctic glaciation and deeper calcite compensation in the Pacific Ocean. Nature, 433, 53-57,
Lear, Caroline H; Rosenthal, Yair; Coxall, Helen; Wilson, Paul A (2004): Late Eocene to early Miocene ice sheet dynamics and the global carbon cycle. Paleoceanography, 19, PA4015,
Tripati, Aradhna K; Elderfield, Henry; Booth, Linda; Zachos, James C; Ferretti, Patrizia (2006): Data report: High-resolution benthic foraminiferal stable isotope stratigraphy across the Oligocene/Miocene boundary at Site 1218. In: Wilson, PA; Lyle, M; Firth, JV (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 199, 1-13,
Wade, Bridget S; Pälike, Heiko (2004): Oligocene climate dynamics. Paleoceanography, 19, PA4019,
Latitude: 8.889630 * Longitude: -135.366660
Date/Time Start: 2001-11-14T00:00:00 * Date/Time End: 2001-11-14T00:00:00
199-1218 * Latitude: 8.889630 * Longitude: -135.366660 * Date/Time: 2001-11-14T00:00:00 * Elevation: -4827.2 m * Penetration: 797.1 m * Recovery: 723.7 m * Location: North Pacific Ocean * Campaign: Leg199 * Basis: Joides Resolution * Device: Composite Core (COMPCORE) * Comment: 80 cores; 735.1 m cored; 62 m drilled; 98.5% recovery
For additional data from other sources used in this publication see doi:10.1594/PANGAEA.547800 and doi:10.1594/PANGAEA.547798
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