A Correction for In-Situ 14 C in Antarctic Ice with 14 CO

• Published in: Radiocarbon
• Main Authors: Van Rouen, Job, Van Der Borg, Klaas, De Jong, Arie, Oerlemans, Johannes
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1995
• Subjects: Antarctic; East Antarctica; Antarc*; Antarctica
• Online Access: http://dx.doi.org/10.1017/s0033822200030605; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200030605

We use a dry extraction method to obtain trapped CO 2 of shallow ice cores from a blue ice area of East Antarctica. In - situ -produced 14 C extracted in 14 CO 2 and 14 CO concentrations show a mean ratio of 3.4 ± 0.4. Correction for in - situ 14 CO 2 resulted in ice ages within 7–13 ka. The accumulation and ablation rates determined from the in - situ production of 7–20 cm yr −1 and 10–13 cm yr −1 , respectively, agree with field measurements, and thus indicate close to total efficiency of extraction.