Linking Global Climates Between Hemispheres and Ocean Basins: Millennial-Scale Temperature and Isotopic Variability of Intermediate and Mid-Depth Watermasses of the Equatorial and Southeast Pacific.
Abstract
Analysis of stable isotopes and trace metals in benthic foraminifera from rapidly accumulating sediments in the Equatorial and Southeast Pacific recovered on ODP Leg 202, reveal remarkably high amplitude variations on millennial scales at water depths of ∼500-1500 m. Presence of climate signals that mimic variability in ice cores provides a strategy for inter-hemispheric and interocean correlation. Surprisingly large variability in subsurface watermass properties in this region mimics signals found in the mid-depth Atlantic. This variability in the Pacific suggests a role for global-scale ocean circulation in interhemispheric and interocean linkage.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2004
- Bibcode:
- 2004AGUFMPP43B..07M
- Keywords:
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- 9355 Pacific Ocean;
- 4870 Stable isotopes;
- 4875 Trace elements;
- 4267 Paleoceanography;
- 1635 Oceans (4203)