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Palaeoceanography

Polar twins

Nature Geoscience volume 2, pages 9192 (2009) | Download Citation

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Ice ages in the North Pacific Ocean and the Southern Ocean were marked by low productivity. Accumulating evidence indicates that strong stratification restricted the supply of nutrients from the deep ocean to the algae of the sunlit surface in these regions.

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Author information

Affiliations

  1. Geological Institute, Department of Earth Sciences, ETH-Zentrum, 8092 Zürich, Switzerland

    • Gerald H. Haug
  2. Leibniz Center for Earth Surface and Climate Studies, Institute for Geosciences Potsdam University, 14476 Potsdam, Germany

    • Gerald H. Haug
  3. Department of Geosciences, Princeton University, Princeton, New Jersey, 08544, USA.

    • Daniel M. Sigman

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Corresponding author

Correspondence to Gerald H. Haug.

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DOI

https://doi.org/10.1038/ngeo423

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