La Nina-like Conditions in the Eastern Equatorial Pacific and a Stronger Choco Jet in the Northern Andes during the Last Glaciation
Six deep sea cores from the eastern equatorial Pacific (EEP) were analyzed for planktonic foraminifera and stable isotopes in order to reconstruct sea surface temperatures (SST) for the last 40 ka. South of the Equatorial Front the abundance of Globorotalia inflata increased, and SST decreased by >5°C (core ODP846B), creating a stronger SST meridional gradient and advection of the Peru Current than present for the ∼16-35 ka interval. A sharper SST meridional gradient forced stronger Choco jet...[Show more]
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