Measurements of 14C in ancient ice from Taylor Glacier, Antarctica constrain in situ cosmogenic 14CH4 and 14CO production rates.

• Published in: Geochimica et Cosmochimica Acta
• Main Authors: Petrenko, VV, Severinghaus, JP, Schaefer, H, Smith, AM, Kuhl, TW, Baggenstos, D, Hua, Q, Brook, EJ, Rose, P, Kulin, R, Bauska, TK, Harth, C, Buizert, C, Orsi, A, Emanuele, G, Lee, JE, Brailsford, G, Keeling, R, Weiss, RF
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2016
• Subjects: Antarctica; Carbon; Glaciers; Methane; Ice; Sampling; Taylor Glacier; Antarc*; ice core; permafrost
• Online Access: http://apo.ansto.gov.au/dspace/handle/10238/6617; https://doi.org/10.1016/j.gca.2016.01.004

Carbon-14 (14C) is incorporated into glacial ice by trapping of atmospheric gases as well as direct near-surface in situ cosmogenic production. 14C of trapped methane (14CH4) is a powerful tracer for past CH4 emissions from “old” carbon sources such as permafrost and marine CH4 clathrates. 14C in tr...