Middle Miocene Southern Ocean Cooling and Antarctic Cryosphere Expansion

@article{Shevenell2004MiddleMS,
  title={Middle Miocene Southern Ocean Cooling and Antarctic Cryosphere Expansion},
  author={A. Shevenell and J. Kennett and D. Lea},
  journal={Science},
  year={2004},
  volume={305},
  pages={1766 - 1770}
}
  • A. Shevenell, J. Kennett, D. Lea
  • Published 2004
  • Medicine, Geology
  • Science
  • Magnesium/calcium data from Southern Ocean planktonic foraminifera demonstrate that high-latitude (∼55°S) southwest Pacific sea surface temperatures (SSTs) cooled 6° to 7°C during the middle Miocene climate transition (14.2 to 13.8 million years ago). Stepwise surface cooling is paced by eccentricity forcing and precedes Antarctic cryosphere expansion by ∼60 thousand years, suggesting the involvement of additional feedbacks during this interval of inferred low-atmospheric partial pressure of… CONTINUE READING

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