Prominent features in isotopic, chemical and dust stratigraphies from coastal East Antarctic ice sheet (Eastern Wilkes Land)
In this work we present the isotopic, chemical and dust stratigraphies of two snow pits sampled in 2013/14at GV7 (coastal East Antarctica: 70°41′ S - 158°51′ E, 1950 m a.s.l.). A large number of chemical species are measured aiming to study their potentiality as environmental changes markers. Season...
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Online Access: | http://hdl.handle.net/11365/1006218 https://doi.org/10.1016/j.chemosphere.2017.02.115 |
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ftunivsiena:oai:usiena-air.unisi.it:11365/1006218 2024-02-11T09:58:43+01:00 Prominent features in isotopic, chemical and dust stratigraphies from coastal East Antarctic ice sheet (Eastern Wilkes Land) Caiazzo, L. BACCOLO, GIOVANNI Barbante, C. Becagli, S Bertò, M. Ciardini, V. Crotti, I. Delmonte, B. Dreossi, G. Frezzotti, M. Gabrieli, J. Giardi, F. Han, Y. Hong, S. B. Hur, S. D. Hwang, H. Kang, J. H. Narcisi, B. Proposito, M. Scarchilli, C. Selmo, E. Severi, M. Spolaor, A. Stenni, B. Traversi, R. Udisti, R. Caiazzo, L. Baccolo, Giovanni Barbante, C. Becagli, S Bertò, M. Ciardini, V. Crotti, I. Delmonte, B. Dreossi, G. Frezzotti, M. Gabrieli, J. Giardi, F. Han, Y. Hong, S. B. Hur, S. D. Hwang, H. Kang, J. H. Narcisi, B. Proposito, M. Scarchilli, C. Selmo, E. Severi, M. Spolaor, A. Stenni, B. Traversi, R. Udisti, R. 2017 STAMPA http://hdl.handle.net/11365/1006218 https://doi.org/10.1016/j.chemosphere.2017.02.115 eng eng info:eu-repo/semantics/altIdentifier/pmid/28273535 info:eu-repo/semantics/altIdentifier/wos/WOS:000399849300032 volume:176 firstpage:273 lastpage:287 numberofpages:15 journal:CHEMOSPHERE http://hdl.handle.net/11365/1006218 doi:10.1016/j.chemosphere.2017.02.115 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85014451864 www.elsevier.com/locate/chemosphere info:eu-repo/semantics/closedAccess Chemical composition Dating East Antarctica GV7 Seasonal pattern Snow pit Chemistry (all) Environmental Chemistry info:eu-repo/semantics/article 2017 ftunivsiena https://doi.org/10.1016/j.chemosphere.2017.02.115 2024-01-23T23:20:05Z In this work we present the isotopic, chemical and dust stratigraphies of two snow pits sampled in 2013/14at GV7 (coastal East Antarctica: 70°41′ S - 158°51′ E, 1950 m a.s.l.). A large number of chemical species are measured aiming to study their potentiality as environmental changes markers. Seasonal cluster backward trajectories analysis was performed and compared with chemical marker stratigraphies. Sea spray aerosol is delivered to the sampling site together with snow precipitation especially in autumn-winter by air masses arising from Western Pacific Ocean sector. Dust show maximum concentration in spring when the air masses arising from Ross Sea sector mobilize mineral dust from ice-free areas of the Transantarctic mountains. The clear seasonal pattern of sulfur oxidized compounds allows the dating of the snow-pit and the calculation of the mean accumulation rate, which is 242±71mm w.e. for the period 2008–2013. Methanesulfonic acid and NO3− do not show any concentration decreasing trend as depth increases, also considering a 12m firn core record. Therefore these two compounds are not affected by post-depositional processes at this site and can be considered reliable markers for past environmental changes reconstruction. The rBC snow-pit record shows the highest values in summer 2012 likely related to large biomass burning even occurred in Australia in this summer. The undisturbed accumulation rate for this site is demonstrated by the agreement between the chemical stratigraphies and the annual accumulation rate of the two snow-pits analysed in Italian and Korean laboratories. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ross Sea Wilkes Land Università degli Studi di Siena: USiena air Antarctic East Antarctica Ross Sea East Antarctic Ice Sheet Transantarctic Mountains Pacific Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Chemosphere 176 273 287 |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Chemical composition Dating East Antarctica GV7 Seasonal pattern Snow pit Chemistry (all) Environmental Chemistry |
spellingShingle |
Chemical composition Dating East Antarctica GV7 Seasonal pattern Snow pit Chemistry (all) Environmental Chemistry Caiazzo, L. BACCOLO, GIOVANNI Barbante, C. Becagli, S Bertò, M. Ciardini, V. Crotti, I. Delmonte, B. Dreossi, G. Frezzotti, M. Gabrieli, J. Giardi, F. Han, Y. Hong, S. B. Hur, S. D. Hwang, H. Kang, J. H. Narcisi, B. Proposito, M. Scarchilli, C. Selmo, E. Severi, M. Spolaor, A. Stenni, B. Traversi, R. Udisti, R. Prominent features in isotopic, chemical and dust stratigraphies from coastal East Antarctic ice sheet (Eastern Wilkes Land) |
topic_facet |
Chemical composition Dating East Antarctica GV7 Seasonal pattern Snow pit Chemistry (all) Environmental Chemistry |
description |
In this work we present the isotopic, chemical and dust stratigraphies of two snow pits sampled in 2013/14at GV7 (coastal East Antarctica: 70°41′ S - 158°51′ E, 1950 m a.s.l.). A large number of chemical species are measured aiming to study their potentiality as environmental changes markers. Seasonal cluster backward trajectories analysis was performed and compared with chemical marker stratigraphies. Sea spray aerosol is delivered to the sampling site together with snow precipitation especially in autumn-winter by air masses arising from Western Pacific Ocean sector. Dust show maximum concentration in spring when the air masses arising from Ross Sea sector mobilize mineral dust from ice-free areas of the Transantarctic mountains. The clear seasonal pattern of sulfur oxidized compounds allows the dating of the snow-pit and the calculation of the mean accumulation rate, which is 242±71mm w.e. for the period 2008–2013. Methanesulfonic acid and NO3− do not show any concentration decreasing trend as depth increases, also considering a 12m firn core record. Therefore these two compounds are not affected by post-depositional processes at this site and can be considered reliable markers for past environmental changes reconstruction. The rBC snow-pit record shows the highest values in summer 2012 likely related to large biomass burning even occurred in Australia in this summer. The undisturbed accumulation rate for this site is demonstrated by the agreement between the chemical stratigraphies and the annual accumulation rate of the two snow-pits analysed in Italian and Korean laboratories. |
author2 |
Caiazzo, L. Baccolo, Giovanni Barbante, C. Becagli, S Bertò, M. Ciardini, V. Crotti, I. Delmonte, B. Dreossi, G. Frezzotti, M. Gabrieli, J. Giardi, F. Han, Y. Hong, S. B. Hur, S. D. Hwang, H. Kang, J. H. Narcisi, B. Proposito, M. Scarchilli, C. Selmo, E. Severi, M. Spolaor, A. Stenni, B. Traversi, R. Udisti, R. |
format |
Article in Journal/Newspaper |
author |
Caiazzo, L. BACCOLO, GIOVANNI Barbante, C. Becagli, S Bertò, M. Ciardini, V. Crotti, I. Delmonte, B. Dreossi, G. Frezzotti, M. Gabrieli, J. Giardi, F. Han, Y. Hong, S. B. Hur, S. D. Hwang, H. Kang, J. H. Narcisi, B. Proposito, M. Scarchilli, C. Selmo, E. Severi, M. Spolaor, A. Stenni, B. Traversi, R. Udisti, R. |
author_facet |
Caiazzo, L. BACCOLO, GIOVANNI Barbante, C. Becagli, S Bertò, M. Ciardini, V. Crotti, I. Delmonte, B. Dreossi, G. Frezzotti, M. Gabrieli, J. Giardi, F. Han, Y. Hong, S. B. Hur, S. D. Hwang, H. Kang, J. H. Narcisi, B. Proposito, M. Scarchilli, C. Selmo, E. Severi, M. Spolaor, A. Stenni, B. Traversi, R. Udisti, R. |
author_sort |
Caiazzo, L. |
title |
Prominent features in isotopic, chemical and dust stratigraphies from coastal East Antarctic ice sheet (Eastern Wilkes Land) |
title_short |
Prominent features in isotopic, chemical and dust stratigraphies from coastal East Antarctic ice sheet (Eastern Wilkes Land) |
title_full |
Prominent features in isotopic, chemical and dust stratigraphies from coastal East Antarctic ice sheet (Eastern Wilkes Land) |
title_fullStr |
Prominent features in isotopic, chemical and dust stratigraphies from coastal East Antarctic ice sheet (Eastern Wilkes Land) |
title_full_unstemmed |
Prominent features in isotopic, chemical and dust stratigraphies from coastal East Antarctic ice sheet (Eastern Wilkes Land) |
title_sort |
prominent features in isotopic, chemical and dust stratigraphies from coastal east antarctic ice sheet (eastern wilkes land) |
publishDate |
2017 |
url |
http://hdl.handle.net/11365/1006218 https://doi.org/10.1016/j.chemosphere.2017.02.115 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic East Antarctica Ross Sea East Antarctic Ice Sheet Transantarctic Mountains Pacific Wilkes Land |
geographic_facet |
Antarctic East Antarctica Ross Sea East Antarctic Ice Sheet Transantarctic Mountains Pacific Wilkes Land |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ross Sea Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ross Sea Wilkes Land |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/28273535 info:eu-repo/semantics/altIdentifier/wos/WOS:000399849300032 volume:176 firstpage:273 lastpage:287 numberofpages:15 journal:CHEMOSPHERE http://hdl.handle.net/11365/1006218 doi:10.1016/j.chemosphere.2017.02.115 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85014451864 www.elsevier.com/locate/chemosphere |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.chemosphere.2017.02.115 |
container_title |
Chemosphere |
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176 |
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273 |
op_container_end_page |
287 |
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1790594458574651392 |