Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Roijen, J.J. van"'
Publikováno v:
Radiocarbon, 37(2), 165. Radiocarbon
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 i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0fb00490a3e0649b0c46a630dc27cb46
https://dspace.library.uu.nl/handle/1874/22247
https://dspace.library.uu.nl/handle/1874/22247
Publikováno v:
Annals of Glaciology, 21, 139. International Glaciological Society
Shallow ice cores from an Antarctic blue-ice area at Scharllenbergbotncn were 14C-analyzed using a dry-extraction technique and accelerator mass spectrometry. The in situ production was determined from the 14CO component and used to deduce the natura
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::08ef3144e983f6074b828521f17b9f30
https://dspace.library.uu.nl/handle/1874/22275
https://dspace.library.uu.nl/handle/1874/22275
Autor:
Roijen, J.J. van, Bintanja, R., Borg, R. van den, Broeke, M.R. van den, Jong, A.F.M. de, Oerlemans, J.
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 92(1-4), 331. Elsevier
A dry extraction method was used to obtain trapped CO, of 2-5 kg ice samples from a blue ice zone in East Antarctica. In situ produced 14C was also extracted in 14C0, and 14C0 concentrations at a ratio of 3.4 f 0.9. Correction of trapped 14C0, from i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::f3428c7a23bf4ea3c9cfb975a697ea45
https://dspace.library.uu.nl/handle/1874/13389
https://dspace.library.uu.nl/handle/1874/13389
Autor:
Oerlemans, J., Wal, R.S.W. van de, Roijen, J.J. van, Raynaud, D., Borg, K. van der, Jong, A.F.M. de, Lipenkov, V., Huybrechts, P.
Publikováno v:
Tellus-Series B-Chemical and physical meteorology, 46, 94. Blackwell Synergy
Tellus B; Vol 46, No 2 (1994)
Tellus B; Vol 46, No 2 (1994)
A dry extraction method of CO2 included in glacier ice adds a contamination equivalent to 1.8 μg modern carbon for a 35 μg C sample. This enables radiocarbon dating by accelerator mass spectrometry of 35 μg C samples to about 25 000 BP. Measured 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb1176f86aee30f943d4647a3586bc80
https://dspace.library.uu.nl/handle/1874/21045
https://dspace.library.uu.nl/handle/1874/21045