Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity
Deception Island is one of the most active volcanoes in Antarctica with more than twenty explosive eruptions in the past two centuries. Any future volcanic eruption(s) is a serious concern for scientists and tourists, will be detrimental to marine ecosystems and could have an impact to global oceano...
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ftumanchesterpub:oai:pure.atira.dk:publications/690f114c-3267-4e71-99ca-01d985071dc6 2023-11-12T04:04:01+01:00 Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity Álvarez-Valero, A.M. Sumino, Hirochika Caracausi , Antonio Sánchez, AP Burgess, Raymond Geyer, A Borrajo, J Lozano Rodríguez , JA Albert, H Aulinas , M Núñez‑Guerrero , E 2022-11-15 https://research.manchester.ac.uk/en/publications/690f114c-3267-4e71-99ca-01d985071dc6 https://doi.org/https://www.nature.com/articles/s41598-022-23991-3 eng eng info:eu-repo/semantics/openAccess Álvarez-Valero , A M , Sumino , H , Caracausi , A , Sánchez , AP , Burgess , R , Geyer , A , Borrajo , J , Lozano Rodríguez , JA , Albert , H , Aulinas , M & Núñez‑Guerrero , E 2022 , ' Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity ' , Scientific Reports , vol. 12 , 19557 . https://doi.org/https://www.nature.com/articles/s41598-022-23991-3 article 2022 ftumanchesterpub 2023-10-30T09:15:40Z Deception Island is one of the most active volcanoes in Antarctica with more than twenty explosive eruptions in the past two centuries. Any future volcanic eruption(s) is a serious concern for scientists and tourists, will be detrimental to marine ecosystems and could have an impact to global oceanographic processes. Currently, it is not possible to carry-out low and high frequency volcanic gas monitoring at Deception Island because of the arduous climatic conditions and its remote location. Helium, neon and argon isotopes measured in olivine samples of the main eruptive events (pre-, syn- and post caldera) offer insights into the processes governing its volcanic history. Our results show that: (i) ascending primitive magmas outgassed volatiles with a MORB-like helium isotopic signature (3He/4He ratio); and (ii) variations in the He isotope ratio, as well as intensive degassing evidenced by fractionated 4He/40Ar* values, occurred before the beginning of the main eruptive episodes. Our results show how the pre-eruptive noble gas signals of volcanic activity is an important step toward a better understanding of the magmatic dynamics and has the potential to improve eruption forecasting. Article in Journal/Newspaper Antarc* Antarctica Deception Island The University of Manchester: Research Explorer |
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The University of Manchester: Research Explorer |
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ftumanchesterpub |
language |
English |
description |
Deception Island is one of the most active volcanoes in Antarctica with more than twenty explosive eruptions in the past two centuries. Any future volcanic eruption(s) is a serious concern for scientists and tourists, will be detrimental to marine ecosystems and could have an impact to global oceanographic processes. Currently, it is not possible to carry-out low and high frequency volcanic gas monitoring at Deception Island because of the arduous climatic conditions and its remote location. Helium, neon and argon isotopes measured in olivine samples of the main eruptive events (pre-, syn- and post caldera) offer insights into the processes governing its volcanic history. Our results show that: (i) ascending primitive magmas outgassed volatiles with a MORB-like helium isotopic signature (3He/4He ratio); and (ii) variations in the He isotope ratio, as well as intensive degassing evidenced by fractionated 4He/40Ar* values, occurred before the beginning of the main eruptive episodes. Our results show how the pre-eruptive noble gas signals of volcanic activity is an important step toward a better understanding of the magmatic dynamics and has the potential to improve eruption forecasting. |
format |
Article in Journal/Newspaper |
author |
Álvarez-Valero, A.M. Sumino, Hirochika Caracausi , Antonio Sánchez, AP Burgess, Raymond Geyer, A Borrajo, J Lozano Rodríguez , JA Albert, H Aulinas , M Núñez‑Guerrero , E |
spellingShingle |
Álvarez-Valero, A.M. Sumino, Hirochika Caracausi , Antonio Sánchez, AP Burgess, Raymond Geyer, A Borrajo, J Lozano Rodríguez , JA Albert, H Aulinas , M Núñez‑Guerrero , E Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity |
author_facet |
Álvarez-Valero, A.M. Sumino, Hirochika Caracausi , Antonio Sánchez, AP Burgess, Raymond Geyer, A Borrajo, J Lozano Rodríguez , JA Albert, H Aulinas , M Núñez‑Guerrero , E |
author_sort |
Álvarez-Valero, A.M. |
title |
Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity |
title_short |
Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity |
title_full |
Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity |
title_fullStr |
Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity |
title_full_unstemmed |
Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity |
title_sort |
noble gas isotopes reveal degassing‑derived eruptions at deception island (antarctica): implications for the current high levels of volcanic activity |
publishDate |
2022 |
url |
https://research.manchester.ac.uk/en/publications/690f114c-3267-4e71-99ca-01d985071dc6 https://doi.org/https://www.nature.com/articles/s41598-022-23991-3 |
genre |
Antarc* Antarctica Deception Island |
genre_facet |
Antarc* Antarctica Deception Island |
op_source |
Álvarez-Valero , A M , Sumino , H , Caracausi , A , Sánchez , AP , Burgess , R , Geyer , A , Borrajo , J , Lozano Rodríguez , JA , Albert , H , Aulinas , M & Núñez‑Guerrero , E 2022 , ' Noble gas isotopes reveal degassing‑derived eruptions at Deception Island (Antarctica): implications for the current high levels of volcanic activity ' , Scientific Reports , vol. 12 , 19557 . https://doi.org/https://www.nature.com/articles/s41598-022-23991-3 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1782340366672855040 |