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Marchal, Olivier Associate Scientist, Geology & Geophysics

Positions

My research interests concern predominantly the large-scale circulation in the ocean, with emphasis on its variability on a range of time scales, including those that are resolved by deep-sea sediment records. I am interested in using water property measurements to estimate the circulation and in understanding the role of non-conservative processes in the distribution of chemical substances in the sea. My research strategy operates along three lines. (1) I combine observations with models using inverse methods in order to address estimation problems in oceanography and paleoceanography. (2) I develop and apply numerical models of ocean circulation that are simplified and computationally efficient in order to isolate fundamental aspects of the circulation and study its variability on long time scales. (3) More marginally but with equal interest, I conduct laboratory experiments with rotating turntables in order to develop understanding of the dynamics of geophysical fluids.

selected publications