Elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the Bárðarbunga volcanic system, Iceland
International audience The 2014 Bárðarbunga rifting event in Iceland resulted in a 6-month long eruption at Holuhraun. This eruption was characterized by high lava discharge rate and significant gas emission. The SO2 flux for the first 3 months was measured with satellite sensors and the petrologic...
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ftanrparis:oai:HAL:hal-01637164v1 2024-09-15T18:13:41+00:00 Elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the Bárðarbunga volcanic system, Iceland Gauthier, Pierre-Jean Sigmarsson, Olgeir Gouhier, Mathieu Haddadi, Baptiste Moune, Séverine Laboratoire Magmas et Volcans (LMV) Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) ANR-10-LABX-0006,CLERVOLC,Clermont-Ferrand centre for research on volcanism(2010) 2016-03 https://uca.hal.science/hal-01637164 https://uca.hal.science/hal-01637164/document https://uca.hal.science/hal-01637164/file/2015JB012111.pdf https://doi.org/10.1002/2015JB012111 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JB012111 hal-01637164 https://uca.hal.science/hal-01637164 https://uca.hal.science/hal-01637164/document https://uca.hal.science/hal-01637164/file/2015JB012111.pdf doi:10.1002/2015JB012111 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://uca.hal.science/hal-01637164 Journal of Geophysical Research : Solid Earth, 2016, 121 (3), pp.1610 - 1630. ⟨10.1002/2015JB012111⟩ [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology info:eu-repo/semantics/article Journal articles 2016 ftanrparis https://doi.org/10.1002/2015JB012111 2024-07-12T11:03:47Z International audience The 2014 Bárðarbunga rifting event in Iceland resulted in a 6-month long eruption at Holuhraun. This eruption was characterized by high lava discharge rate and significant gas emission. The SO2 flux for the first 3 months was measured with satellite sensors and the petrologic method. High-resolution time series of the satellite data give 1200 kg/s that concurs with 1050 kg/s obtained from melt inclusion minus degassed lava sulfur contents scaled to the mass of magma produced. A high-purity gas sample, with elevated S/Cl due to limited chlorine degassing, reveals a similar degassing pattern of trace metals as observed at Kīlauea (Hawai'i) and Erta Ale (Ethiopia). This suggests a common degassing mechanism at mantle plume-related volcanoes. The trace metal fluxes, calculated from trace element to sulfur ratios in the gas sample and scaled to the sulfur dioxide flux, are 1–2 orders of magnitude stronger at Holuhraun than Kīlauea and Erta Ale. In contrast, volcanoes at convergent margins (Etna and Stromboli, Italy) have 1–2 orders of magnitude higher trace element fluxes, most likely caused by abundant chlorine degassing. This emphasizes the importance of metal degassing as chlorine species. Short-lived disequilibria between radon daughters, 210Pb-210Bi-210Po measured in the gas, suggest degassing of a continuously replenished magma batch beneath the eruption site. Earlier and deep degassing phase of carbon dioxide and polonium is inferred from low (210Po/210Pb) in the gas, consistent with magma transfer rate of 0.75 m/s. Article in Journal/Newspaper Iceland Portail HAL-ANR (Agence Nationale de la Recherche) Journal of Geophysical Research: Solid Earth 121 3 1610 1630 |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology |
spellingShingle |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology Gauthier, Pierre-Jean Sigmarsson, Olgeir Gouhier, Mathieu Haddadi, Baptiste Moune, Séverine Elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the Bárðarbunga volcanic system, Iceland |
topic_facet |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology |
description |
International audience The 2014 Bárðarbunga rifting event in Iceland resulted in a 6-month long eruption at Holuhraun. This eruption was characterized by high lava discharge rate and significant gas emission. The SO2 flux for the first 3 months was measured with satellite sensors and the petrologic method. High-resolution time series of the satellite data give 1200 kg/s that concurs with 1050 kg/s obtained from melt inclusion minus degassed lava sulfur contents scaled to the mass of magma produced. A high-purity gas sample, with elevated S/Cl due to limited chlorine degassing, reveals a similar degassing pattern of trace metals as observed at Kīlauea (Hawai'i) and Erta Ale (Ethiopia). This suggests a common degassing mechanism at mantle plume-related volcanoes. The trace metal fluxes, calculated from trace element to sulfur ratios in the gas sample and scaled to the sulfur dioxide flux, are 1–2 orders of magnitude stronger at Holuhraun than Kīlauea and Erta Ale. In contrast, volcanoes at convergent margins (Etna and Stromboli, Italy) have 1–2 orders of magnitude higher trace element fluxes, most likely caused by abundant chlorine degassing. This emphasizes the importance of metal degassing as chlorine species. Short-lived disequilibria between radon daughters, 210Pb-210Bi-210Po measured in the gas, suggest degassing of a continuously replenished magma batch beneath the eruption site. Earlier and deep degassing phase of carbon dioxide and polonium is inferred from low (210Po/210Pb) in the gas, consistent with magma transfer rate of 0.75 m/s. |
author2 |
Laboratoire Magmas et Volcans (LMV) Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) ANR-10-LABX-0006,CLERVOLC,Clermont-Ferrand centre for research on volcanism(2010) |
format |
Article in Journal/Newspaper |
author |
Gauthier, Pierre-Jean Sigmarsson, Olgeir Gouhier, Mathieu Haddadi, Baptiste Moune, Séverine |
author_facet |
Gauthier, Pierre-Jean Sigmarsson, Olgeir Gouhier, Mathieu Haddadi, Baptiste Moune, Séverine |
author_sort |
Gauthier, Pierre-Jean |
title |
Elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the Bárðarbunga volcanic system, Iceland |
title_short |
Elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the Bárðarbunga volcanic system, Iceland |
title_full |
Elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the Bárðarbunga volcanic system, Iceland |
title_fullStr |
Elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the Bárðarbunga volcanic system, Iceland |
title_full_unstemmed |
Elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the Bárðarbunga volcanic system, Iceland |
title_sort |
elevated gas flux and trace metal degassing from the 2014-2015 fissure eruption at the bárðarbunga volcanic system, iceland |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://uca.hal.science/hal-01637164 https://uca.hal.science/hal-01637164/document https://uca.hal.science/hal-01637164/file/2015JB012111.pdf https://doi.org/10.1002/2015JB012111 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://uca.hal.science/hal-01637164 Journal of Geophysical Research : Solid Earth, 2016, 121 (3), pp.1610 - 1630. ⟨10.1002/2015JB012111⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JB012111 hal-01637164 https://uca.hal.science/hal-01637164 https://uca.hal.science/hal-01637164/document https://uca.hal.science/hal-01637164/file/2015JB012111.pdf doi:10.1002/2015JB012111 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2015JB012111 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
121 |
container_issue |
3 |
container_start_page |
1610 |
op_container_end_page |
1630 |
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1810451437148176384 |