Cl-36 in polar ice, rainwater and seawater
Concentrations of the cosmogenic radioisotope Cl-36 in Antarctic ice, rain, and an upper limit of the seawater value are determined using van de Graaff accelerator high energy mass spectrometry. Cl-36 concentrations in Antarctic ice range between 2.5 to 8.7 x 10 to the 6th atoms Cl-36/kg, while thos...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19810030024 2023-05-15T13:46:48+02:00 Cl-36 in polar ice, rainwater and seawater Finkel, R. C. Nishiizumi, K. Elmore, D. Ferraro, R. D. Gove, H. E. Unclassified, Unlimited, Publicly available Nov 1, 1980 http://ntrs.nasa.gov/search.jsp?R=19810030024 unknown http://ntrs.nasa.gov/search.jsp?R=19810030024 Accession ID: 81A14428 Copyright Other Sources 46 Geophysical Research Letters; 7; Nov. 198 1980 ftnasantrs 2012-02-15T14:36:22Z Concentrations of the cosmogenic radioisotope Cl-36 in Antarctic ice, rain, and an upper limit of the seawater value are determined using van de Graaff accelerator high energy mass spectrometry. Cl-36 concentrations in Antarctic ice range between 2.5 to 8.7 x 10 to the 6th atoms Cl-36/kg, while those concentrations in samples collected at the Alan Hills ice field locations where meteorites have been brought to the surface by glacial flow and ablation are found to vary by more than a factor of three. This variation is attributed either to the effects of atmospheric mixing and scavenging or to radioactive decay in old ice. The Cl-36 concentration found in a present sample of rainwater is much lower than that reported in samples collected in the early 1960's, suggesting the occurrence of a decrease in the concentration of atmospheric Cl-36 derived from nuclear weapons tests over this time period. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
language |
unknown |
topic |
46 |
spellingShingle |
46 Finkel, R. C. Nishiizumi, K. Elmore, D. Ferraro, R. D. Gove, H. E. Cl-36 in polar ice, rainwater and seawater |
topic_facet |
46 |
description |
Concentrations of the cosmogenic radioisotope Cl-36 in Antarctic ice, rain, and an upper limit of the seawater value are determined using van de Graaff accelerator high energy mass spectrometry. Cl-36 concentrations in Antarctic ice range between 2.5 to 8.7 x 10 to the 6th atoms Cl-36/kg, while those concentrations in samples collected at the Alan Hills ice field locations where meteorites have been brought to the surface by glacial flow and ablation are found to vary by more than a factor of three. This variation is attributed either to the effects of atmospheric mixing and scavenging or to radioactive decay in old ice. The Cl-36 concentration found in a present sample of rainwater is much lower than that reported in samples collected in the early 1960's, suggesting the occurrence of a decrease in the concentration of atmospheric Cl-36 derived from nuclear weapons tests over this time period. |
format |
Other/Unknown Material |
author |
Finkel, R. C. Nishiizumi, K. Elmore, D. Ferraro, R. D. Gove, H. E. |
author_facet |
Finkel, R. C. Nishiizumi, K. Elmore, D. Ferraro, R. D. Gove, H. E. |
author_sort |
Finkel, R. C. |
title |
Cl-36 in polar ice, rainwater and seawater |
title_short |
Cl-36 in polar ice, rainwater and seawater |
title_full |
Cl-36 in polar ice, rainwater and seawater |
title_fullStr |
Cl-36 in polar ice, rainwater and seawater |
title_full_unstemmed |
Cl-36 in polar ice, rainwater and seawater |
title_sort |
cl-36 in polar ice, rainwater and seawater |
publishDate |
1980 |
url |
http://ntrs.nasa.gov/search.jsp?R=19810030024 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19810030024 Accession ID: 81A14428 |
op_rights |
Copyright |
_version_ |
1766245225975513088 |