Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antrctica
Concentrations of major ions (Cl-, NO3-, SO42-, Na+, K+, Mg2+, Ca2+) 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 ext...
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Online Access: | http://hdl.handle.net/11365/25139 https://doi.org/10.1017/S095410200400197x |
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ftunivsiena:oai:usiena-air.unisi.it:11365/25139 2024-04-21T07:48:27+00:00 Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antrctica Borghini, F. Bargagli, R. Borghini, F. Bargagli, R. 2004 STAMPA http://hdl.handle.net/11365/25139 https://doi.org/10.1017/S095410200400197x eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000222280700003 volume:16 issue:2 firstpage:107 lastpage:115 numberofpages:9 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11365/25139 doi:10.1017/S095410200400197x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-2942755970 info:eu-repo/semantics/closedAccess Continental Antarctica Source Spatio-temporal variation Water systems info:eu-repo/semantics/article 2004 ftunivsiena https://doi.org/10.1017/S095410200400197x 2024-03-28T00:49:21Z Concentrations of major ions (Cl-, NO3-, SO42-, Na+, K+, Mg2+, Ca2+) 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 SO42- 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 SO42- concentrations. Article in Journal/Newspaper Antarc* Antarctic Antarctica Victoria Land Università degli Studi di Siena: USiena air Antarctic Science 16 2 107 115 |
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Open Polar |
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Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Continental Antarctica Source Spatio-temporal variation Water systems |
spellingShingle |
Continental Antarctica Source Spatio-temporal variation Water systems Borghini, F. Bargagli, R. Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antrctica |
topic_facet |
Continental Antarctica Source Spatio-temporal variation Water systems |
description |
Concentrations of major ions (Cl-, NO3-, SO42-, Na+, K+, Mg2+, Ca2+) 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 SO42- 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 SO42- concentrations. |
author2 |
Borghini, F. Bargagli, R. |
format |
Article in Journal/Newspaper |
author |
Borghini, F. Bargagli, R. |
author_facet |
Borghini, F. Bargagli, R. |
author_sort |
Borghini, F. |
title |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antrctica |
title_short |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antrctica |
title_full |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antrctica |
title_fullStr |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antrctica |
title_full_unstemmed |
Changes of major ion concentrations in melting snow and terrestrial waters from northern Victoria Land, Antrctica |
title_sort |
changes of major ion concentrations in melting snow and terrestrial waters from northern victoria land, antrctica |
publishDate |
2004 |
url |
http://hdl.handle.net/11365/25139 https://doi.org/10.1017/S095410200400197x |
genre |
Antarc* Antarctic Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000222280700003 volume:16 issue:2 firstpage:107 lastpage:115 numberofpages:9 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11365/25139 doi:10.1017/S095410200400197x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-2942755970 |
op_rights |
info:eu-repo/semantics/closedAccess |
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 |
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1796949654069313536 |