Firn-core study from the southern Patagonia ice cap, South America
Abstract A shallow firn core, recovered from the southern Patagonia ice cap (elevation 2680 m a.s.I.), has been analyzed for H stable isotope composition and for major soluble chemical compounds. The temperature measurement at 13.17 m depth (bottom of the core) shows that the ice cap is temperate. T...
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Cambridge University Press (CUP)
1993
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Online Access: | http://dx.doi.org/10.1017/s0022143000015914 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015914 |
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crcambridgeupr:10.1017/s0022143000015914 2024-03-03T08:45:18+00:00 Firn-core study from the southern Patagonia ice cap, South America Aristarain, Alberto J. Delmas, Robert J. 1993 http://dx.doi.org/10.1017/s0022143000015914 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015914 en eng Cambridge University Press (CUP) Journal of Glaciology volume 39, issue 132, page 249-254 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1993 crcambridgeupr https://doi.org/10.1017/s0022143000015914 2024-02-08T08:40:23Z Abstract A shallow firn core, recovered from the southern Patagonia ice cap (elevation 2680 m a.s.I.), has been analyzed for H stable isotope composition and for major soluble chemical compounds. The temperature measurement at 13.17 m depth (bottom of the core) shows that the ice cap is temperate. The chemical profiles indicate that some soluble impurities have been partly washed out by percolation, but seasonal deuterium content variations are relatively well preserved down to the bottom of the core, which allows the net accumulation rate of the site to be calculated (1.2 m water equivalent). The mean concentrations measured in the most recent year recorded (Cl − :4.85, nssSO 4 2− : 0.65, NO 3 − :0.32, Na + :4.30, K + :0.64 and NH 4 + : 0.77, in μeq. 1 −1 ) serve as a reference for the background chemical composition of precipitation at mid-southern latitudes under South Pacific meteorological conditions. Article in Journal/Newspaper Ice cap Journal of Glaciology Cambridge University Press Patagonia Pacific Journal of Glaciology 39 132 249 254 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Aristarain, Alberto J. Delmas, Robert J. Firn-core study from the southern Patagonia ice cap, South America |
topic_facet |
Earth-Surface Processes |
description |
Abstract A shallow firn core, recovered from the southern Patagonia ice cap (elevation 2680 m a.s.I.), has been analyzed for H stable isotope composition and for major soluble chemical compounds. The temperature measurement at 13.17 m depth (bottom of the core) shows that the ice cap is temperate. The chemical profiles indicate that some soluble impurities have been partly washed out by percolation, but seasonal deuterium content variations are relatively well preserved down to the bottom of the core, which allows the net accumulation rate of the site to be calculated (1.2 m water equivalent). The mean concentrations measured in the most recent year recorded (Cl − :4.85, nssSO 4 2− : 0.65, NO 3 − :0.32, Na + :4.30, K + :0.64 and NH 4 + : 0.77, in μeq. 1 −1 ) serve as a reference for the background chemical composition of precipitation at mid-southern latitudes under South Pacific meteorological conditions. |
format |
Article in Journal/Newspaper |
author |
Aristarain, Alberto J. Delmas, Robert J. |
author_facet |
Aristarain, Alberto J. Delmas, Robert J. |
author_sort |
Aristarain, Alberto J. |
title |
Firn-core study from the southern Patagonia ice cap, South America |
title_short |
Firn-core study from the southern Patagonia ice cap, South America |
title_full |
Firn-core study from the southern Patagonia ice cap, South America |
title_fullStr |
Firn-core study from the southern Patagonia ice cap, South America |
title_full_unstemmed |
Firn-core study from the southern Patagonia ice cap, South America |
title_sort |
firn-core study from the southern patagonia ice cap, south america |
publisher |
Cambridge University Press (CUP) |
publishDate |
1993 |
url |
http://dx.doi.org/10.1017/s0022143000015914 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015914 |
geographic |
Patagonia Pacific |
geographic_facet |
Patagonia Pacific |
genre |
Ice cap Journal of Glaciology |
genre_facet |
Ice cap Journal of Glaciology |
op_source |
Journal of Glaciology volume 39, issue 132, page 249-254 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000015914 |
container_title |
Journal of Glaciology |
container_volume |
39 |
container_issue |
132 |
container_start_page |
249 |
op_container_end_page |
254 |
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1792500840359002112 |