Event Title

Pliocine Diatom Abundance as Proxy for Temperature in Weddell Sea: ODP Site 697

Location

King Building 327

Start Date

4-29-2016 4:00 PM

End Date

4-29-2016 5:15 PM

Abstract

During the Pliocene, carbon dioxide in the atmosphere was approximately 400 ppm. Today’s atmosphere exhibits similar carbon dioxide levels. Analyzing diatom abundance and changes in species diversity in the Weddell Sea during the Pliocene provides insight into temperature and sea-ice cover changes during this important time interval. Diatom abundance and diversity at ODP Site 697 displays distinct species oscillations between 3.26 to 3.03 million years ago. Colder periods include 3.23 mya, 3.08 mya, and begin again around 3.03 mya.

Notes

Session III, Panel 14 - Codifying Nature, Understanding History: Geological Translations of Water and Soil
Moderator: Bruce Simonson, Professor of Geology

Major

Geology

Advisor(s)

Karla Hubbard, Geology

Project Mentor(s)

Karla Hubbard, Geology

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Apr 29th, 4:00 PM Apr 29th, 5:15 PM

Pliocine Diatom Abundance as Proxy for Temperature in Weddell Sea: ODP Site 697

King Building 327

During the Pliocene, carbon dioxide in the atmosphere was approximately 400 ppm. Today’s atmosphere exhibits similar carbon dioxide levels. Analyzing diatom abundance and changes in species diversity in the Weddell Sea during the Pliocene provides insight into temperature and sea-ice cover changes during this important time interval. Diatom abundance and diversity at ODP Site 697 displays distinct species oscillations between 3.26 to 3.03 million years ago. Colder periods include 3.23 mya, 3.08 mya, and begin again around 3.03 mya.