Earth Institute Contact: Dr. Robert Anderson
Locations: Pacific Ocean
This project will test the utility of extraterrestrial 3He as a constant flux proxy for paleoceanographic research over long time scales (last 1.5 Ma). The study will determine 3He accumulation rates at three sites, ODP 806, TT013-PC72, and ODP 849, representing a transect in the equatorial Pacific. Absolute 3He rates will be evaluated by using 18O dating of sediments over the last 1.5 Ma. Relative changes in 3He accumulation rates will be evaluated by normalizing concentrations of 3He to those of 10Be (decay corrected). In addition the project will measure 230Th at each site over the last 300,000 years to test the sensitivity of 3He and 10Be accumulation rates to climate variability.
Cross Cutting Themes:
Climate and Society
National Science Foundation