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Neodymium Isotopic Signature Of The Deep Western Boundary Current And The Distribution Of Neodymium Isotopes And Concentrations Across Line W, Brian Daniel Duggan
Neodymium Isotopic Signature Of The Deep Western Boundary Current And The Distribution Of Neodymium Isotopes And Concentrations Across Line W, Brian Daniel Duggan
Theses and Dissertations
The capacity of the neodymium (Nd) 143Nd/144Nd ratio to trace modern ocean circulation accurately allows for the assumption that the ratio can also accurately trace paleo ocean circulation. Therefore, a complete understanding of Nd cycling and its effect on the isotopic composition in the oceans is vital. Traditionally, Nd isotopic composition (Nd IC) is considered a conservative property in the open ocean, while coastal and margin environments tend to be dictated by nonconservative exchange processes. However, Nd concentrations ([Nd]) in the open ocean typically display a nutrient like profile, increasing with depth. Such a discrepancy between Nd IC and [Nd] …