Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D.
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Geology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000400853 |
Resumo: | ABSTRACT: The study of atmospheric aerosols through polar ice cores is one of the most common and robust tools for the investigation of past changes in the circulation and chemistry of the atmosphere. Only a few subannual resolution records are available for the development of paleochemical and environmental interpretations. Here, we report the ionic content record for the period of 1882-2008 A.D. in an ice core recovered at the ice divide of the West Antarctic Ice Sheet. The ion concentrations found in the core were determined by ion chromatography on more than 2,000 samples and the basic statistics were calculated for major inorganic and organic ions. The dating of the core layers was based on the seasonality of SO 4 2- , NO 3 - , and Na + , checked by the identification of the Krakatau (1883), Agung (1963) and Pinatubo/Hudson (1991) volcanic eruption signals. Significant aerosol input events were identified and grouped considering the ions present, their provenance and the season. The ionic balance, together with the decomposition of some origin indicators, showed that 36% of the ionic charge is derived from sea salt aerosols, 13% from mineral dust, and 17% from biogenic marine activity, while 34% are mainly products of chemical reactivity in the atmosphere. |
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Brazilian Journal of Geology |
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Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D.aerosolsice coreWest Antarctic Ice Sheettrace analysision chromatographyABSTRACT: The study of atmospheric aerosols through polar ice cores is one of the most common and robust tools for the investigation of past changes in the circulation and chemistry of the atmosphere. Only a few subannual resolution records are available for the development of paleochemical and environmental interpretations. Here, we report the ionic content record for the period of 1882-2008 A.D. in an ice core recovered at the ice divide of the West Antarctic Ice Sheet. The ion concentrations found in the core were determined by ion chromatography on more than 2,000 samples and the basic statistics were calculated for major inorganic and organic ions. The dating of the core layers was based on the seasonality of SO 4 2- , NO 3 - , and Na + , checked by the identification of the Krakatau (1883), Agung (1963) and Pinatubo/Hudson (1991) volcanic eruption signals. Significant aerosol input events were identified and grouped considering the ions present, their provenance and the season. The ionic balance, together with the decomposition of some origin indicators, showed that 36% of the ionic charge is derived from sea salt aerosols, 13% from mineral dust, and 17% from biogenic marine activity, while 34% are mainly products of chemical reactivity in the atmosphere.Sociedade Brasileira de Geologia2018-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000400853Brazilian Journal of Geology v.48 n.4 2018reponame:Brazilian Journal of Geologyinstname:Sociedade Brasileira de Geologia (SBGEO)instacron:SBGEO10.1590/2317-4889201820180037info:eu-repo/semantics/openAccessThoen,Isaías UllmannSimões,Jefferson CardiaLindau,Filipe Gaudie LeySneed,Sharon Buchananeng2019-01-08T00:00:00Zoai:scielo:S2317-48892018000400853Revistahttp://bjg.siteoficial.ws/index.htmhttps://old.scielo.br/oai/scielo-oai.phpsbgsede@sbgeo.org.br||claudio.riccomini@gmail.com2317-46922317-4692opendoar:2019-01-08T00:00Brazilian Journal of Geology - Sociedade Brasileira de Geologia (SBGEO)false |
dc.title.none.fl_str_mv |
Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D. |
title |
Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D. |
spellingShingle |
Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D. Thoen,Isaías Ullmann aerosols ice core West Antarctic Ice Sheet trace analysis ion chromatography |
title_short |
Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D. |
title_full |
Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D. |
title_fullStr |
Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D. |
title_full_unstemmed |
Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D. |
title_sort |
Ionic content in an ice core from the West Antarctic Ice Sheet: 1882-2008 A.D. |
author |
Thoen,Isaías Ullmann |
author_facet |
Thoen,Isaías Ullmann Simões,Jefferson Cardia Lindau,Filipe Gaudie Ley Sneed,Sharon Buchanan |
author_role |
author |
author2 |
Simões,Jefferson Cardia Lindau,Filipe Gaudie Ley Sneed,Sharon Buchanan |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Thoen,Isaías Ullmann Simões,Jefferson Cardia Lindau,Filipe Gaudie Ley Sneed,Sharon Buchanan |
dc.subject.por.fl_str_mv |
aerosols ice core West Antarctic Ice Sheet trace analysis ion chromatography |
topic |
aerosols ice core West Antarctic Ice Sheet trace analysis ion chromatography |
description |
ABSTRACT: The study of atmospheric aerosols through polar ice cores is one of the most common and robust tools for the investigation of past changes in the circulation and chemistry of the atmosphere. Only a few subannual resolution records are available for the development of paleochemical and environmental interpretations. Here, we report the ionic content record for the period of 1882-2008 A.D. in an ice core recovered at the ice divide of the West Antarctic Ice Sheet. The ion concentrations found in the core were determined by ion chromatography on more than 2,000 samples and the basic statistics were calculated for major inorganic and organic ions. The dating of the core layers was based on the seasonality of SO 4 2- , NO 3 - , and Na + , checked by the identification of the Krakatau (1883), Agung (1963) and Pinatubo/Hudson (1991) volcanic eruption signals. Significant aerosol input events were identified and grouped considering the ions present, their provenance and the season. The ionic balance, together with the decomposition of some origin indicators, showed that 36% of the ionic charge is derived from sea salt aerosols, 13% from mineral dust, and 17% from biogenic marine activity, while 34% are mainly products of chemical reactivity in the atmosphere. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000400853 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000400853 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2317-4889201820180037 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Geologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Geologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Geology v.48 n.4 2018 reponame:Brazilian Journal of Geology instname:Sociedade Brasileira de Geologia (SBGEO) instacron:SBGEO |
instname_str |
Sociedade Brasileira de Geologia (SBGEO) |
instacron_str |
SBGEO |
institution |
SBGEO |
reponame_str |
Brazilian Journal of Geology |
collection |
Brazilian Journal of Geology |
repository.name.fl_str_mv |
Brazilian Journal of Geology - Sociedade Brasileira de Geologia (SBGEO) |
repository.mail.fl_str_mv |
sbgsede@sbgeo.org.br||claudio.riccomini@gmail.com |
_version_ |
1752122398921981952 |