A correction for in situ 14C in Antarctic ice with 14CO

We use a dry extraction method to obtain trapped C02 of shallow ice cores from a blue ice area of East Antarctica. In-situ-produced 14C extracted in 14CO2 and 10CO concentrations show a mean ratio of 3.4 ± 0.4. Correction for insitu 14CO2 resulted in ice ages within 7-13 ka. The accumulation and abl...

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Bibliographic Details
Main Authors: Roijen, J.J. van, Borg, K. van der, Jong, A.F.M. de, Oerlemans, J.
Format: Article in Journal/Newspaper
Language:English
Published: 1995
Subjects:
Natuur- en Sterrenkunde
Antarctic
East Antarctica
Antarc*
Antarctica
Online Access:https://dspace.library.uu.nl/handle/1874/22247
Description
Summary:We use a dry extraction method to obtain trapped C02 of shallow ice cores from a blue ice area of East Antarctica. In-situ-produced 14C extracted in 14CO2 and 10CO concentrations show a mean ratio of 3.4 ± 0.4. Correction for insitu 14CO2 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.

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