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Ice Sheets and the Anthropocene

Wolff, Eric W.. 2014 Ice Sheets and the Anthropocene. In: Waters, C.N.; Zalasiewicz, J.A.; Williams, J.M.; Ellis, M.A.; Snelling, A.N., (eds.) A stratigraphical basis for the Anthropocene. London, Geological Society of London, 255-263. (Special Publications, 395, 395).

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Abstract/Summary

Ice could play a role in identifying and defining the Anthropocene. The recurrence of northern hemisphere glaciation and the stability of the Greenland Ice Sheet are both potentially vulnerable to human impact on the environment. However, only a very long hiatus in either would be unusual in the context of the Quaternary Period, requiring the definition of a geological boundary. Human influence can clearly be discerned in several ice-core measurements. These include a sharp boundary in radioactivity due to atmospheric nuclear testing; increases, unprecedented at least in the Holocene, in Greenland concentrations of sulphate, nitrate and metals such as lead; the appearance in ice-core air bubbles of previously undetectable compounds such as SF6; and the rise, unprecedented in the last 800 ka, in concentrations of carbon dioxide and methane. Some combination of these changes could be used by future generations to clearly identify the onset of a new epoch defined at a particular calendar date. However, it is not yet clear what the character of the fully developed Anthropocene will be, and it might be wise to let future generations decide, with hindsight, when the Anthropocene started, acknowledging only that we are in the transition towards it.

Item Type: Publication - Book Section
Digital Object Identifier (DOI): 10.1144/SP395.10
Programmes: BAS Programmes > Polar Science for Planet Earth (2009 - ) > Chemistry and Past Climate
ISBN: 9781862396289
ISSN: 0305-8719
NORA Subject Terms: Earth Sciences
Date made live: 19 Jan 2015 11:16 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/509411

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