Antarctic ice sheet and oceanographic response to eccentricity forcing during the early Miocene

Liebrand, D.
Lourens, L.J.
Hodell, D.A.
Boer, B. de
Wal, R.S.W. van de
Pälike, H.

Publication date

January 2011

Abstract

Stable isotope records of benthic foraminifera from ODP Site 1264 in the southeastern Atlantic Ocean are presented which resolve the latest Oligocene to early Miocene (~24–19 Ma) climate changes at high temporal resolution (<3 kyr). Using an inverse modelling technique, we decomposed the oxygen isotope record into temperature and ice volume and found that the Antarctic ice sheet expanded episodically during the declining phase of the longterm (~400 kyr) eccentricity cycle and subsequent low shortterm (~100 kyr) eccentricity cycle. The largest glaciations are separated by multiple long-term eccentricity cycles, indicating the involvement of a non-linear response mechanism. Our modelling results suggest that during the largest (M...

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Antarctic ice sheet and oceanographic response to eccentricity forcing during the early Miocene

Liebrand, D.
Lourens, L.J.
Hodell, D.A.
Boer, B. de
Wal, R.S.W. van de
Pälike, H.

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Publication date

January 2011

Antarctic ice sheet and oceanographic response to eccentricity forcing during the early Miocene

Abstract

Extracted data

Antarctic ice sheet and oceanographic response to eccentricity forcing during the early Miocene

Abstract

Extracted data

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