Geochemistry of streams from Byers Peninsula, Livingston Island
Abstract In January and February 2009, a series of water samples were collected from streams on Byers Peninsula. These samples were analysed for major elements and δ 18 O to determine the role of lithology and landscape position on stream geochemistry, and to understand better the hydrology (i.e. re...
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crcambridgeupr:10.1017/s0954102012000776 2024-09-15T17:49:05+00:00 Geochemistry of streams from Byers Peninsula, Livingston Island Lyons, W. Berry Welch, K.A. Welch, S.A. Camacho, A. Rochera, C. Michaud, L. deWit, R. Carey, A.E. 2013 http://dx.doi.org/10.1017/s0954102012000776 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102012000776 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 25, issue 2, page 181-190 ISSN 0954-1020 1365-2079 journal-article 2013 crcambridgeupr https://doi.org/10.1017/s0954102012000776 2024-06-26T04:03:07Z Abstract In January and February 2009, a series of water samples were collected from streams on Byers Peninsula. These samples were analysed for major elements and δ 18 O to determine the role of lithology and landscape position on stream geochemistry, and to understand better the hydrology (i.e. residence time of water) of these systems. Precipitation chemistry is enriched in Na + , as are the streams located close to the coast. Streams originating from inland locations have much higher percentages of Ca 2+ . In contrast, Mg 2+ varied little, though streams that are in greater contact with volcanic-derived soils have slightly higher concentrations. Anion percentages varied greatly between streams with SO 4 2- ranging from 5% to 45% of the anion composition. Dissolved Si concentrations as high as 141 μM were observed. All these data suggest that active chemical weathering is occurring in this region. A time series over 13 days at one stream showed little variation in major element geochemistry. The δ 18 O of precipitation samples collected over this same period varied by ∼10‰ while the majority of stream samples varied less than ∼1.5‰. These data indicate that the stream waters represent mixtures of precipitation events, melting snow and water from the subsurface that had gained solutes through chemical weathering. Article in Journal/Newspaper Antarctic Science Livingston Island Cambridge University Press Antarctic Science 25 2 181 190 |
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Open Polar |
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Cambridge University Press |
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English |
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Abstract In January and February 2009, a series of water samples were collected from streams on Byers Peninsula. These samples were analysed for major elements and δ 18 O to determine the role of lithology and landscape position on stream geochemistry, and to understand better the hydrology (i.e. residence time of water) of these systems. Precipitation chemistry is enriched in Na + , as are the streams located close to the coast. Streams originating from inland locations have much higher percentages of Ca 2+ . In contrast, Mg 2+ varied little, though streams that are in greater contact with volcanic-derived soils have slightly higher concentrations. Anion percentages varied greatly between streams with SO 4 2- ranging from 5% to 45% of the anion composition. Dissolved Si concentrations as high as 141 μM were observed. All these data suggest that active chemical weathering is occurring in this region. A time series over 13 days at one stream showed little variation in major element geochemistry. The δ 18 O of precipitation samples collected over this same period varied by ∼10‰ while the majority of stream samples varied less than ∼1.5‰. These data indicate that the stream waters represent mixtures of precipitation events, melting snow and water from the subsurface that had gained solutes through chemical weathering. |
format |
Article in Journal/Newspaper |
author |
Lyons, W. Berry Welch, K.A. Welch, S.A. Camacho, A. Rochera, C. Michaud, L. deWit, R. Carey, A.E. |
spellingShingle |
Lyons, W. Berry Welch, K.A. Welch, S.A. Camacho, A. Rochera, C. Michaud, L. deWit, R. Carey, A.E. Geochemistry of streams from Byers Peninsula, Livingston Island |
author_facet |
Lyons, W. Berry Welch, K.A. Welch, S.A. Camacho, A. Rochera, C. Michaud, L. deWit, R. Carey, A.E. |
author_sort |
Lyons, W. Berry |
title |
Geochemistry of streams from Byers Peninsula, Livingston Island |
title_short |
Geochemistry of streams from Byers Peninsula, Livingston Island |
title_full |
Geochemistry of streams from Byers Peninsula, Livingston Island |
title_fullStr |
Geochemistry of streams from Byers Peninsula, Livingston Island |
title_full_unstemmed |
Geochemistry of streams from Byers Peninsula, Livingston Island |
title_sort |
geochemistry of streams from byers peninsula, livingston island |
publisher |
Cambridge University Press (CUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1017/s0954102012000776 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102012000776 |
genre |
Antarctic Science Livingston Island |
genre_facet |
Antarctic Science Livingston Island |
op_source |
Antarctic Science volume 25, issue 2, page 181-190 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102012000776 |
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Antarctic Science |
container_volume |
25 |
container_issue |
2 |
container_start_page |
181 |
op_container_end_page |
190 |
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1810290773997912064 |