Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores
Strong volcanic signals simultaneously recorded in polar ice sheets are commonly assigned to major low-latitude eruptions that dispersed large quantities of aerosols in the global atmosphere with the potential of inducing climate perturbations. Parent eruptions responsible for specific events are ty...
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Online Access: | http://hdl.handle.net/10281/222778 https://doi.org/10.1016/j.quascirev.2019.03.005 |
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ftunivmilanobic:oai:boa.unimib.it:10281/222778 2024-04-14T08:03:44+00:00 Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores Narcisi, Biancamaria Petit, Jean Robert Delmonte, Barbara Batanova, Valentina Savarino, Joël Narcisi, B Petit, J Delmonte, B Batanova, V Savarino, J 2019 http://hdl.handle.net/10281/222778 https://doi.org/10.1016/j.quascirev.2019.03.005 eng eng Elsevier Ltd info:eu-repo/semantics/altIdentifier/wos/WOS:000465057500013 volume:210 firstpage:164 lastpage:174 numberofpages:11 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10281/222778 doi:10.1016/j.quascirev.2019.03.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85062839283 Ice cores tephra cryptotephra Antarctica volcanic isochron Samalas AD 1257 eruption info:eu-repo/semantics/article 2019 ftunivmilanobic https://doi.org/10.1016/j.quascirev.2019.03.005 2024-03-21T17:09:04Z Strong volcanic signals simultaneously recorded in polar ice sheets are commonly assigned to major low-latitude eruptions that dispersed large quantities of aerosols in the global atmosphere with the potential of inducing climate perturbations. Parent eruptions responsible for specific events are typically deduced from matching to a known volcanic eruption having coincidental date. However, more robust source linkage can be achieved only through geochemical characterisation of the airborne volcanic glass products (tephra) sometimes preserved in the polar strata. We analysed fine-grained tephra particles extracted from layers of the AD 1259 major bipolar volcanic signal in four East Antarctic ice cores drilled in different widely-spaced locations on the Antarctic Plateau. The very large database of glass-shard geochemistry combined with grain size analyses consistently indicate that the material was sourced from multiple distinct eruptions. These are the AD 1257 mega-eruption of Samalas volcano in Indonesia, recently proposed to be the single event responsible for the polar signal, as well as a newly-identified Antarctic eruption, which occurred in northern Victoria Land in AD 1259. Finally, a further eruption that took place somewhere outside of Antarctica has also contributed to tephra deposition. Our high-resolution, multiple-site approach was critical for revealing spatial heterogeneity of tephra at the continental scale. Evidence from ice-core tephra indicates recurrent explosive activity at the Antarctic volcanoes and could have implications for improved reconstruction of post-volcanic effects on climate from proxy polar records Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Victoria Land Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Antarctic The Antarctic Victoria Land Quaternary Science Reviews 210 164 174 |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
Ice cores tephra cryptotephra Antarctica volcanic isochron Samalas AD 1257 eruption |
spellingShingle |
Ice cores tephra cryptotephra Antarctica volcanic isochron Samalas AD 1257 eruption Narcisi, Biancamaria Petit, Jean Robert Delmonte, Barbara Batanova, Valentina Savarino, Joël Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores |
topic_facet |
Ice cores tephra cryptotephra Antarctica volcanic isochron Samalas AD 1257 eruption |
description |
Strong volcanic signals simultaneously recorded in polar ice sheets are commonly assigned to major low-latitude eruptions that dispersed large quantities of aerosols in the global atmosphere with the potential of inducing climate perturbations. Parent eruptions responsible for specific events are typically deduced from matching to a known volcanic eruption having coincidental date. However, more robust source linkage can be achieved only through geochemical characterisation of the airborne volcanic glass products (tephra) sometimes preserved in the polar strata. We analysed fine-grained tephra particles extracted from layers of the AD 1259 major bipolar volcanic signal in four East Antarctic ice cores drilled in different widely-spaced locations on the Antarctic Plateau. The very large database of glass-shard geochemistry combined with grain size analyses consistently indicate that the material was sourced from multiple distinct eruptions. These are the AD 1257 mega-eruption of Samalas volcano in Indonesia, recently proposed to be the single event responsible for the polar signal, as well as a newly-identified Antarctic eruption, which occurred in northern Victoria Land in AD 1259. Finally, a further eruption that took place somewhere outside of Antarctica has also contributed to tephra deposition. Our high-resolution, multiple-site approach was critical for revealing spatial heterogeneity of tephra at the continental scale. Evidence from ice-core tephra indicates recurrent explosive activity at the Antarctic volcanoes and could have implications for improved reconstruction of post-volcanic effects on climate from proxy polar records |
author2 |
Narcisi, B Petit, J Delmonte, B Batanova, V Savarino, J |
format |
Article in Journal/Newspaper |
author |
Narcisi, Biancamaria Petit, Jean Robert Delmonte, Barbara Batanova, Valentina Savarino, Joël |
author_facet |
Narcisi, Biancamaria Petit, Jean Robert Delmonte, Barbara Batanova, Valentina Savarino, Joël |
author_sort |
Narcisi, Biancamaria |
title |
Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores |
title_short |
Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores |
title_full |
Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores |
title_fullStr |
Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores |
title_full_unstemmed |
Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores |
title_sort |
multiple sources for tephra from ad 1259 volcanic signal in antarctic ice cores |
publisher |
Elsevier Ltd |
publishDate |
2019 |
url |
http://hdl.handle.net/10281/222778 https://doi.org/10.1016/j.quascirev.2019.03.005 |
geographic |
Antarctic The Antarctic Victoria Land |
geographic_facet |
Antarctic The 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:000465057500013 volume:210 firstpage:164 lastpage:174 numberofpages:11 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10281/222778 doi:10.1016/j.quascirev.2019.03.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85062839283 |
op_doi |
https://doi.org/10.1016/j.quascirev.2019.03.005 |
container_title |
Quaternary Science Reviews |
container_volume |
210 |
container_start_page |
164 |
op_container_end_page |
174 |
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1796300019796541440 |