High temporal resolution SO2 flux measurements at Erebus volcano, Antarctica
International audience The measurement of SO2 flux from volcanoes is of major importance for monitoring and hazard assessment purposes, and for evaluation of the environmental impact of volcanic emissions. We propose here a novel technique for accurate and high time resolution estimations of the gas...
Published in: | Journal of Volcanology and Geothermal Research |
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ftccsdartic:oai:HAL:hal-01157827v1 2023-05-15T14:03:21+02:00 High temporal resolution SO2 flux measurements at Erebus volcano, Antarctica Mesures à haute résolution temporelle du flux de SO2 sur le volcan Erebus, Antarctique Boichu, Marie Oppenheimer, Clive Tsanev, Vitchko Kyle, Philip R. Department of Geography Cambridge, UK University of Cambridge UK (CAM) Department of Earth and Environmental Science Socorro New Mexico Institute of Mining and Technology New Mexico Tech (NMT) 2009-12-04 https://hal.archives-ouvertes.fr/hal-01157827 https://hal.archives-ouvertes.fr/hal-01157827/document https://hal.archives-ouvertes.fr/hal-01157827/file/VOLGEO4457_Boichu_et_al.pdf https://doi.org/10.1016/j.jvolgeores.2009.11.020 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2009.11.020 hal-01157827 https://hal.archives-ouvertes.fr/hal-01157827 https://hal.archives-ouvertes.fr/hal-01157827/document https://hal.archives-ouvertes.fr/hal-01157827/file/VOLGEO4457_Boichu_et_al.pdf doi:10.1016/j.jvolgeores.2009.11.020 info:eu-repo/semantics/OpenAccess ISSN: 0377-0273 Journal of Volcanology and Geothermal Research https://hal.archives-ouvertes.fr/hal-01157827 Journal of Volcanology and Geothermal Research, Elsevier, 2009, 190, pp.325-336. ⟨10.1016/j.jvolgeores.2009.11.020⟩ http://www.journals.elsevier.com/journal-of-volcanology-and-geothermal-research/ Volcanic degassing DOAS spectroscopy high time resolution gas flux Erebus volcano Antarctica plume velocity Cyclicity [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology info:eu-repo/semantics/article Journal articles 2009 ftccsdartic https://doi.org/10.1016/j.jvolgeores.2009.11.020 2020-12-25T19:33:33Z International audience The measurement of SO2 flux from volcanoes is of major importance for monitoring and hazard assessment purposes, and for evaluation of the environmental impact of volcanic emissions. We propose here a novel technique for accurate and high time resolution estimations of the gas flux. We use two wide field of view UV spectrometers capable of collecting, instantaneously, light from thin parallel cross sections of the whole gas plume, obviating the need for either traversing, scanning or imaging. It enables tracking of inho-mogeneities in the gas cloud from which accurate evaluation of the plume velocity can be made by correlation analysis. The method has been successfully applied on Mt. Erebus volcano (Antarctica). It yields estimations of the plume velocity and gas flux at unprecedented time resolution (1 Hz) and high accuracy (uncertainty of 33%). During a ∼2 h experiment on 26 December 2006, SO2 flux varied between 0.17 and 0.89 ± 0.2 kg s −1 with a vertical plume velocity varying between 1 and 2.5 ± 0.1 m s −1. These measurements provide insight into the short-term variations of the passive degassing of this volcano renowned for its active lava lake. A cyclicity in flux, ranging from about 11-24 min, is evident. We propose two physical mechanisms to explain this degassing pattern, associated to periodic supply of either gas-rich magma or gas alone into the lake. The dual-wide field of view DOAS technique promises better integration of geochemical and geophysical observations and new insights into gas and magma dynamics, as well as processes of magma storage and gas segregation at active volcanoes. Article in Journal/Newspaper Antarc* Antarctica Antarctique* Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Lava Lake ENVELOPE(-128.996,-128.996,55.046,55.046) Journal of Volcanology and Geothermal Research 190 3-4 325 336 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Volcanic degassing DOAS spectroscopy high time resolution gas flux Erebus volcano Antarctica plume velocity Cyclicity [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology |
spellingShingle |
Volcanic degassing DOAS spectroscopy high time resolution gas flux Erebus volcano Antarctica plume velocity Cyclicity [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology Boichu, Marie Oppenheimer, Clive Tsanev, Vitchko Kyle, Philip R. High temporal resolution SO2 flux measurements at Erebus volcano, Antarctica |
topic_facet |
Volcanic degassing DOAS spectroscopy high time resolution gas flux Erebus volcano Antarctica plume velocity Cyclicity [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology |
description |
International audience The measurement of SO2 flux from volcanoes is of major importance for monitoring and hazard assessment purposes, and for evaluation of the environmental impact of volcanic emissions. We propose here a novel technique for accurate and high time resolution estimations of the gas flux. We use two wide field of view UV spectrometers capable of collecting, instantaneously, light from thin parallel cross sections of the whole gas plume, obviating the need for either traversing, scanning or imaging. It enables tracking of inho-mogeneities in the gas cloud from which accurate evaluation of the plume velocity can be made by correlation analysis. The method has been successfully applied on Mt. Erebus volcano (Antarctica). It yields estimations of the plume velocity and gas flux at unprecedented time resolution (1 Hz) and high accuracy (uncertainty of 33%). During a ∼2 h experiment on 26 December 2006, SO2 flux varied between 0.17 and 0.89 ± 0.2 kg s −1 with a vertical plume velocity varying between 1 and 2.5 ± 0.1 m s −1. These measurements provide insight into the short-term variations of the passive degassing of this volcano renowned for its active lava lake. A cyclicity in flux, ranging from about 11-24 min, is evident. We propose two physical mechanisms to explain this degassing pattern, associated to periodic supply of either gas-rich magma or gas alone into the lake. The dual-wide field of view DOAS technique promises better integration of geochemical and geophysical observations and new insights into gas and magma dynamics, as well as processes of magma storage and gas segregation at active volcanoes. |
author2 |
Department of Geography Cambridge, UK University of Cambridge UK (CAM) Department of Earth and Environmental Science Socorro New Mexico Institute of Mining and Technology New Mexico Tech (NMT) |
format |
Article in Journal/Newspaper |
author |
Boichu, Marie Oppenheimer, Clive Tsanev, Vitchko Kyle, Philip R. |
author_facet |
Boichu, Marie Oppenheimer, Clive Tsanev, Vitchko Kyle, Philip R. |
author_sort |
Boichu, Marie |
title |
High temporal resolution SO2 flux measurements at Erebus volcano, Antarctica |
title_short |
High temporal resolution SO2 flux measurements at Erebus volcano, Antarctica |
title_full |
High temporal resolution SO2 flux measurements at Erebus volcano, Antarctica |
title_fullStr |
High temporal resolution SO2 flux measurements at Erebus volcano, Antarctica |
title_full_unstemmed |
High temporal resolution SO2 flux measurements at Erebus volcano, Antarctica |
title_sort |
high temporal resolution so2 flux measurements at erebus volcano, antarctica |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.archives-ouvertes.fr/hal-01157827 https://hal.archives-ouvertes.fr/hal-01157827/document https://hal.archives-ouvertes.fr/hal-01157827/file/VOLGEO4457_Boichu_et_al.pdf https://doi.org/10.1016/j.jvolgeores.2009.11.020 |
long_lat |
ENVELOPE(-128.996,-128.996,55.046,55.046) |
geographic |
Lava Lake |
geographic_facet |
Lava Lake |
genre |
Antarc* Antarctica Antarctique* |
genre_facet |
Antarc* Antarctica Antarctique* |
op_source |
ISSN: 0377-0273 Journal of Volcanology and Geothermal Research https://hal.archives-ouvertes.fr/hal-01157827 Journal of Volcanology and Geothermal Research, Elsevier, 2009, 190, pp.325-336. ⟨10.1016/j.jvolgeores.2009.11.020⟩ http://www.journals.elsevier.com/journal-of-volcanology-and-geothermal-research/ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2009.11.020 hal-01157827 https://hal.archives-ouvertes.fr/hal-01157827 https://hal.archives-ouvertes.fr/hal-01157827/document https://hal.archives-ouvertes.fr/hal-01157827/file/VOLGEO4457_Boichu_et_al.pdf doi:10.1016/j.jvolgeores.2009.11.020 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.jvolgeores.2009.11.020 |
container_title |
Journal of Volcanology and Geothermal Research |
container_volume |
190 |
container_issue |
3-4 |
container_start_page |
325 |
op_container_end_page |
336 |
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1766273970298945536 |