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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ftenea:oai:iris.enea.it:20.500.12079/52627 2024-03-31T07:48:33+00:00 Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores Narcisi B. Petit J. R. Delmonte B. Batanova V. Savarino J. Narcisi, B. Petit, J. R. Delmonte, B. Batanova, V. Savarino, J. 2019 https://hdl.handle.net/20.500.12079/52627 https://doi.org/10.1016/j.quascirev.2019.03.005 http://www.journals.elsevier.com/quaternary-science-reviews/ eng eng volume:210 firstpage:164 lastpage:174 numberofpages:11 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/20.500.12079/52627 doi:10.1016/j.quascirev.2019.03.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85062839283 http://www.journals.elsevier.com/quaternary-science-reviews/ Antarctic rifting volcanism Antarctica Cryptotephra Glass shard microanalysi Ice core Samalas AD 1257 eruption Volcanic isochron info:eu-repo/semantics/article 2019 ftenea https://doi.org/20.500.12079/5262710.1016/j.quascirev.2019.03.005 2024-03-06T00:18:11Z 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 ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile) Antarctic The Antarctic Victoria Land Quaternary Science Reviews 210 164 174 |
institution |
Open Polar |
collection |
ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile) |
op_collection_id |
ftenea |
language |
English |
topic |
Antarctic rifting volcanism Antarctica Cryptotephra Glass shard microanalysi Ice core Samalas AD 1257 eruption Volcanic isochron |
spellingShingle |
Antarctic rifting volcanism Antarctica Cryptotephra Glass shard microanalysi Ice core Samalas AD 1257 eruption Volcanic isochron Narcisi B. Petit J. R. Delmonte B. Batanova V. Savarino J. Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores |
topic_facet |
Antarctic rifting volcanism Antarctica Cryptotephra Glass shard microanalysi Ice core Samalas AD 1257 eruption Volcanic isochron |
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. R. Delmonte, B. Batanova, V. Savarino, J. |
format |
Article in Journal/Newspaper |
author |
Narcisi B. Petit J. R. Delmonte B. Batanova V. Savarino J. |
author_facet |
Narcisi B. Petit J. R. Delmonte B. Batanova V. Savarino J. |
author_sort |
Narcisi B. |
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 |
publishDate |
2019 |
url |
https://hdl.handle.net/20.500.12079/52627 https://doi.org/10.1016/j.quascirev.2019.03.005 http://www.journals.elsevier.com/quaternary-science-reviews/ |
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 |
volume:210 firstpage:164 lastpage:174 numberofpages:11 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/20.500.12079/52627 doi:10.1016/j.quascirev.2019.03.005 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85062839283 http://www.journals.elsevier.com/quaternary-science-reviews/ |
op_doi |
https://doi.org/20.500.12079/5262710.1016/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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