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| Amrhein, Daniel E.; Gebbie, Geoffrey; Marchal, Olivier; Wunsch, Carl. |
| The ocean circulation modifies mixed layer (ML) tracer signals as they are communicated to the deep ocean by advection and mixing. We develop and apply a procedure for using tracer signals observed "upstream" (by planktonic foraminifera) and "downstream" (by benthic foraminifera) to constrain how tracer signals are modified by the intervening circulation and, by extension, to constrain properties of that circulation. A history of ML equilibrium calcite delta O-18 (delta O-18(c)) spanning the last deglaciation is inferred from a least-squares fit of eight benthic foraminiferal delta O-18(c) records to Green's function estimated for the modern ocean circulation. Disagreements between this history and the ML history implied by planktonic records would... |
| Tipo: Text |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00496/60726/65246.pdf |
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