Volcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissions

Recent measurements of reactive trace gas species in volcanic plumes have offered intriguing hints at the chemistry occurring in the hot environment at volcanic vents. This has led to the recognition that volcanic vents should be regarded not only as passive sources of volcanic gases to the atmosphe...

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Main Author: Mather, T
Format: Journal article
Language:English
Published: Royal Society Publishing 2008
Subjects:
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author Mather, T
author_facet Mather, T
author_sort Mather, T
collection OXFORD
description Recent measurements of reactive trace gas species in volcanic plumes have offered intriguing hints at the chemistry occurring in the hot environment at volcanic vents. This has led to the recognition that volcanic vents should be regarded not only as passive sources of volcanic gases to the atmosphere, but also as 'reaction vessels' that unlock otherwise inert volcanic and atmospheric gas species. The atypical conditions created by the mixing of ambient atmosphere with the hot gases emitted from magma give rise to elevated concentrations of otherwise unexpected chemical compounds. Rapid cooling of this mixture allows these species to persist into the environment, with important consequences for gas plume chemistry and impacts. This paper discusses some examples of the implications of these high-temperature interactions in terms of nitrogen, halogen and sulphur chemistry, and their consequences in terms of the global fixed nitrogen budget, volcanically induced ozone destruction and particle fluxes to the atmosphere. Volcanically initiated atmospheric chemistry was likely to have been particularly important before biological (and latterly anthropogenic) processes started to dominate many geochemical cycles, with important consequences in terms of the evolution of the nitrogen cycle and the role of particles in modulating the Earth's climate.
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spelling oxford-uuid:db202439-3cd9-4f29-9e33-74ddabe38c252022-03-27T09:08:10ZVolcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissionsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:db202439-3cd9-4f29-9e33-74ddabe38c25Earth sciencesEnglishOxford University Research Archive - ValetRoyal Society Publishing2008Mather, TRecent measurements of reactive trace gas species in volcanic plumes have offered intriguing hints at the chemistry occurring in the hot environment at volcanic vents. This has led to the recognition that volcanic vents should be regarded not only as passive sources of volcanic gases to the atmosphere, but also as 'reaction vessels' that unlock otherwise inert volcanic and atmospheric gas species. The atypical conditions created by the mixing of ambient atmosphere with the hot gases emitted from magma give rise to elevated concentrations of otherwise unexpected chemical compounds. Rapid cooling of this mixture allows these species to persist into the environment, with important consequences for gas plume chemistry and impacts. This paper discusses some examples of the implications of these high-temperature interactions in terms of nitrogen, halogen and sulphur chemistry, and their consequences in terms of the global fixed nitrogen budget, volcanically induced ozone destruction and particle fluxes to the atmosphere. Volcanically initiated atmospheric chemistry was likely to have been particularly important before biological (and latterly anthropogenic) processes started to dominate many geochemical cycles, with important consequences in terms of the evolution of the nitrogen cycle and the role of particles in modulating the Earth's climate.
spellingShingle Earth sciences
Mather, T
Volcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissions
title Volcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissions
title_full Volcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissions
title_fullStr Volcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissions
title_full_unstemmed Volcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissions
title_short Volcanism and the atmosphere: the potential role of the atmosphere in unlocking the reactivity of volcanic emissions
title_sort volcanism and the atmosphere the potential role of the atmosphere in unlocking the reactivity of volcanic emissions
topic Earth sciences
work_keys_str_mv AT mathert volcanismandtheatmospherethepotentialroleoftheatmosphereinunlockingthereactivityofvolcanicemissions