Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antarctica
Concentrations of major ions (Cl − , NO 3 − , SO 4 2− , Na + , K + , Mg 2+ , Ca 2+ ) were measured in melting snow and water samples from streams and lakes in ice-free areas throughout northern Victoria Land. Most ions in snow and terrestrial water derive from the marine environment and their concen...
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Cambridge University Press (CUP)
2004
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Online Access: | http://dx.doi.org/10.1017/s095410200400197x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200400197X |
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crcambridgeupr:10.1017/s095410200400197x 2024-09-15T17:48:40+00:00 Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antarctica BORGHINI, FRANCESCA BARGAGLI, ROBERTO 2004 http://dx.doi.org/10.1017/s095410200400197x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200400197X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 16, issue 2, page 107-115 ISSN 0954-1020 1365-2079 journal-article 2004 crcambridgeupr https://doi.org/10.1017/s095410200400197x 2024-07-31T04:04:33Z Concentrations of major ions (Cl − , NO 3 − , SO 4 2− , Na + , K + , Mg 2+ , Ca 2+ ) were measured in melting snow and water samples from streams and lakes in ice-free areas throughout northern Victoria Land. Most ions in snow and terrestrial water derive from the marine environment and their concentrations are extremely variable in space and time, especially in water systems without melting snow and ice. The distance from the sea, snow sublimation, changes in water inflow, evaporative concentrations, weathering and drainage processes in the catchment, nesting seabirds and aquatic microbiota are among factors which most influence ion composition variability. Comparisons with data from twelve years ago in the same lakes indicate that the warming trend detected at Terra Nova Bay station during this period did not affect the biogeochemistry of water systems. Waters from a lake which recently experienced a lowering of the water level showed a remarkable increase in SO 4 2− concentrations. We hypothesized that the differential mobility of sulphate salts in the Antarctic soils, the biosynthesis of sulphur compounds in the lake, and the progressive decrease of the water volume are factors involved in the increase of SO 4 2− concentrations. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Victoria Land Cambridge University Press Antarctic Science 16 2 107 115 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Concentrations of major ions (Cl − , NO 3 − , SO 4 2− , Na + , K + , Mg 2+ , Ca 2+ ) were measured in melting snow and water samples from streams and lakes in ice-free areas throughout northern Victoria Land. Most ions in snow and terrestrial water derive from the marine environment and their concentrations are extremely variable in space and time, especially in water systems without melting snow and ice. The distance from the sea, snow sublimation, changes in water inflow, evaporative concentrations, weathering and drainage processes in the catchment, nesting seabirds and aquatic microbiota are among factors which most influence ion composition variability. Comparisons with data from twelve years ago in the same lakes indicate that the warming trend detected at Terra Nova Bay station during this period did not affect the biogeochemistry of water systems. Waters from a lake which recently experienced a lowering of the water level showed a remarkable increase in SO 4 2− concentrations. We hypothesized that the differential mobility of sulphate salts in the Antarctic soils, the biosynthesis of sulphur compounds in the lake, and the progressive decrease of the water volume are factors involved in the increase of SO 4 2− concentrations. |
format |
Article in Journal/Newspaper |
author |
BORGHINI, FRANCESCA BARGAGLI, ROBERTO |
spellingShingle |
BORGHINI, FRANCESCA BARGAGLI, ROBERTO Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antarctica |
author_facet |
BORGHINI, FRANCESCA BARGAGLI, ROBERTO |
author_sort |
BORGHINI, FRANCESCA |
title |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antarctica |
title_short |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antarctica |
title_full |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antarctica |
title_fullStr |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antarctica |
title_full_unstemmed |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antarctica |
title_sort |
changes of major ion concentrations in melting snow and terrestrial waters from northern victoria land, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2004 |
url |
http://dx.doi.org/10.1017/s095410200400197x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200400197X |
genre |
Antarc* Antarctic Antarctic Science Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Victoria Land |
op_source |
Antarctic Science volume 16, issue 2, page 107-115 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s095410200400197x |
container_title |
Antarctic Science |
container_volume |
16 |
container_issue |
2 |
container_start_page |
107 |
op_container_end_page |
115 |
_version_ |
1810290140074999808 |