Document Type



1 Rapid Draw Down of a Portion of the West Antarctic Ice Sheet During the Last Deglaciation

Publication Title

Journal of Glaciology

Rights and Access Note

This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).

Publication Date


First Page


Last Page


Abstract/ Summary

Most of the West Antarctic Ice Sheet rests on a bed below sea level, making it the least stable of the world’s three large ice sheets (Overpeck et al., 2006). Analysis of the Siple Dome ice core suggests two episodes during the last deglaciation of large and abrupt decreases in the ice surface elevation along the Siple Coast, suggesting that portions of large ice sheets can respond rapidly to a gradual climate change. These events may provide an analogy for the response of the West Antarctic Ice Sheet to human-induced climate change, and draw attention to a small portion of the Ross Ice Shelf where future changes may originate.


post-print (i.e. final draft post-refereeing with all author corrections and edits)



Rights Statement

In Copyright - Educational Use Permitted.