Dynamics of ice ages on Mars

Norbert Schorghofer ()
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Norbert Schorghofer: Institute for Astronomy and NASA Astrobiology Institute, 2680 Woodlawn Drive, University of Hawaii, Honolulu, Hawaii 96822, USA

Nature, 2007, vol. 449, issue 7159, 192-194

Abstract: Taking a tilt at Mars Mars experiences much greater fluctuations in exposure to sunlight than the Earth does, because of larger variations in astronomical factors such as the tilt of its axis relative to the orbital plane. Climate change is accordingly more intense on Mars than on Earth. Norbert Schorghofer has now developed a climate model that accounts for the advance and retreat of the subsurface martian ice sheets over forty major ice ages and five million years. This explains the present distribution of subsurface ice on Mars. In addition, lessons learned from the long and relatively simple martian ice-age stratigraphy should help when it comes to interpreting the more complicated events here on Earth.

Date: 2007
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DOI: 10.1038/nature06082

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