The response of a simple Antarctic ice-flow model to temperature and sea-level fluctuations over the Cenozoic era

• Main Authors: van Tuyll, C.I., van de Wal, R.S.W., Oerlemans, J.
• Other Authors: Marine and Atmospheric Research, Dep Natuurkunde, Sub Dynamics Meteorology
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 2007
• Subjects: Antarctic; The Antarctic; Antarc*; Ice Sheet
• Online Access: https://dspace.library.uu.nl/handle/1874/42698

An ice-flow model is used to simulate the Antarctic ice-sheet volume and deep-sea temperature record during Cenozoic times. We used a vertically integrated axisymmetric ice-sheet model, including bedrock adjustment. In order to overcome strong numerical hysteresis effects during climate change, the model is solved on a stretching grid. The Cenozoic reconstruction of the Antarctic ice sheet is accomplished by splitting the global oxygen isotope record derived from benthic foraminifera into an ice-volume and a deep-sea temperature component. The model is tuned to reconstruct the initiation of a large ice sheet of continental size at 34 Ma. The resulting ice volume curve shows that small ice caps (