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Research Expeditions


Clipperton Atoll (France)

January-February 2023

In collaboration with the S/Y Acadia, post-doctoral researchers Alan Foreman and Nic Duprey led an expedition to Clipperton Atoll, an extremely remote island at the southwestern edge of the oxygen minimum zone, in order to collect coral cores, coral tissue samples, and seawater samples. The principal goal of this work is to understand the past evolution of the oxygen deficient zones of the Northern Tropical Eastern Pacific, and to use this information to infer how these zones may change as the ocean continues to warm. We collected more than 10 coral cores, 100 coral tissue samples, and 25 seawater samples. This work represents a key aspect of a larger project that we are leading: reconstructing the history of the oxygen deficient zones of the entire Northern Tropical Eastern Pacific. Eventually this work will allow for the reconstruction of the history of the area going back across the 20th century, and will provide key data for modelling future changes in oxygen concentrations in the area. 

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