Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica)
Major explosive volcanic eruptions may significantly alter the global atmosphere for about 2-3 years. During that period, volcanic products (mainly H2SO4) with high residence time, stored in the stratosphere or, for shorter times, in the troposphere are gradually deposited onto polar ice caps. Antar...
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ftuniveneziairis:oai:iris.unive.it:10278/3724983 2024-04-14T08:02:43+00:00 Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) Nardin, Raffaello Amore, Alessandra Becagli, Silvia Caiazzo, Laura Frezzotti, Massimo Severi, Mirko Stenni, Barbara Traversi, Rita Nardin, Raffaello Amore, Alessandra Becagli, Silvia Caiazzo, Laura Frezzotti, Massimo Severi, Mirko Stenni, Barbara Traversi, Rita 2020 http://hdl.handle.net/10278/3724983 https://doi.org/10.3390/geosciences10010038 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000513130700033 volume:10 issue:1 firstpage:38 numberofpages:15 journal:GEOSCIENCES http://hdl.handle.net/10278/3724983 doi:10.3390/geosciences10010038 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85083106677 info:eu-repo/semantics/openAccess volcanism Antarctica ion chromatography paleoclimate ice core tephra Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2020 ftuniveneziairis https://doi.org/10.3390/geosciences10010038 2024-03-21T18:12:47Z Major explosive volcanic eruptions may significantly alter the global atmosphere for about 2-3 years. During that period, volcanic products (mainly H2SO4) with high residence time, stored in the stratosphere or, for shorter times, in the troposphere are gradually deposited onto polar ice caps. Antarctic snow may thus record acidic signals providing a history of past volcanic events. The high resolution sulphate concentration profile along a 197 m long ice core drilled at GV7 (Northern Victoria land) was obtained by Ion Chromatography on around 3500 discrete samples. The relatively high accumulation rate (241 +/- 13 mm we yr (-1)) and the 5-cm sampling resolution allowed a preliminary counted age scale. The obtained stratigraphy covers roughly the last millennium and 24 major volcanic eruptions were identified, dated, and tentatively ascribed to a source volcano. The deposition flux of volcanic sulphate was calculated for each signature and the results were compared with data from other Antarctic ice cores at regional and continental scale. Our results show that the regional variability is of the same order of magnitude as the continental one. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Victoria Land Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic Victoria Land Geosciences 10 1 38 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
volcanism Antarctica ion chromatography paleoclimate ice core tephra Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
volcanism Antarctica ion chromatography paleoclimate ice core tephra Settore GEO/08 - Geochimica e Vulcanologia Nardin, Raffaello Amore, Alessandra Becagli, Silvia Caiazzo, Laura Frezzotti, Massimo Severi, Mirko Stenni, Barbara Traversi, Rita Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) |
topic_facet |
volcanism Antarctica ion chromatography paleoclimate ice core tephra Settore GEO/08 - Geochimica e Vulcanologia |
description |
Major explosive volcanic eruptions may significantly alter the global atmosphere for about 2-3 years. During that period, volcanic products (mainly H2SO4) with high residence time, stored in the stratosphere or, for shorter times, in the troposphere are gradually deposited onto polar ice caps. Antarctic snow may thus record acidic signals providing a history of past volcanic events. The high resolution sulphate concentration profile along a 197 m long ice core drilled at GV7 (Northern Victoria land) was obtained by Ion Chromatography on around 3500 discrete samples. The relatively high accumulation rate (241 +/- 13 mm we yr (-1)) and the 5-cm sampling resolution allowed a preliminary counted age scale. The obtained stratigraphy covers roughly the last millennium and 24 major volcanic eruptions were identified, dated, and tentatively ascribed to a source volcano. The deposition flux of volcanic sulphate was calculated for each signature and the results were compared with data from other Antarctic ice cores at regional and continental scale. Our results show that the regional variability is of the same order of magnitude as the continental one. |
author2 |
Nardin, Raffaello Amore, Alessandra Becagli, Silvia Caiazzo, Laura Frezzotti, Massimo Severi, Mirko Stenni, Barbara Traversi, Rita |
format |
Article in Journal/Newspaper |
author |
Nardin, Raffaello Amore, Alessandra Becagli, Silvia Caiazzo, Laura Frezzotti, Massimo Severi, Mirko Stenni, Barbara Traversi, Rita |
author_facet |
Nardin, Raffaello Amore, Alessandra Becagli, Silvia Caiazzo, Laura Frezzotti, Massimo Severi, Mirko Stenni, Barbara Traversi, Rita |
author_sort |
Nardin, Raffaello |
title |
Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) |
title_short |
Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) |
title_full |
Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) |
title_fullStr |
Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) |
title_full_unstemmed |
Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) |
title_sort |
volcanic fluxes over the last millennium as recorded in the gv7 ice core (northern victoria land, antarctica) |
publishDate |
2020 |
url |
http://hdl.handle.net/10278/3724983 https://doi.org/10.3390/geosciences10010038 |
geographic |
Antarctic Victoria Land |
geographic_facet |
Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctica ice core Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica ice core Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000513130700033 volume:10 issue:1 firstpage:38 numberofpages:15 journal:GEOSCIENCES http://hdl.handle.net/10278/3724983 doi:10.3390/geosciences10010038 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85083106677 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/geosciences10010038 |
container_title |
Geosciences |
container_volume |
10 |
container_issue |
1 |
container_start_page |
38 |
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1796316948352466944 |