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Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity
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| Veröffentlicht in: | Frontiers in Earth Science 7(2019) Artikel-Nummer UNSP 132, 14 Seiten |
|---|---|
| Personen und Körperschaften: | , , , , , , , , , , , |
| Titel: | Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity/ Simon Warnach, Nicole Bobrowski, Silvana Hidalgo, Santiago Arellano, Holger Sihler, Florian Dinger, Peter Luebcke, Jean Battaglia, Alexander Steele, Bo Galle, Ulrich Platt and Thomas Wagner |
| Format: | E-Book-Kapitel |
| Sprache: | Englisch |
| veröffentlicht: |
02 July 2019
|
| Gesamtaufnahme: |
: Frontiers in Earth Science, 7(2019) Artikel-Nummer UNSP 132, 14 Seiten
, volume:7 |
| Schlagwörter: | |
| Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
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| 520 | |a Recent long-term observations of the bromine monoxide (BrO) to sulphur dioxide (SO2) molar ratio in volcanic plumes have suggested a link between changes in the BrO/SO2 ratio and the volcanic activity. Nevertheless, understanding of the mechanisms determining this link is still limited due to the lack of studies on volcanic bromine release from the melt into the atmosphere. We present the results of 10 years (2007-2017) of observations of the BrO/SO2 molar ratio in the volcanic plume of Tungurahua volcano, Ecuador. Following the nearly continuous eruptive activity from 1999 to 2008, Tungurahua showed alternating phases of eruptive activity separated by periods of quiescence between late 2008 and March 2016, after which degassing intensity decreased below detection. By comparing the BrO/SO2 molar ratios collected from 13 eruptive phases to volcanic activity, this study aims to broaden the global observational database investigating their link. For this purpose, we combine three different methods to retrieve the BrO/SO2 molar ratio to analyse variations over different timescales. We identify a cyclic pattern in BrO/SO2 molar ratios for 11 of the 13 eruptive phases. The phases are initialised by low BrO/SO2 molar ratios between 2 and 6 x 10(-5) coinciding with vulcanian-type activity followed by a strong increase to ratios ranging between 4 and 17 x 10(-5) when eruptive dynamism shifts to strombolian. For five phases, we additionally observe a progressive decrease to the initial values of 2 to 5 x 10(-5) toward the end of the phase. This clear pattern indicates a connection between the BrO/SO2 molar ratio and eruptive dynamics. Based on our new data, we propose a conceptual model of the volcanic processes taking place at Tungurahua during the eruptive phases. Our data furthermore indicate that maximal BrO/SO2 molar ratios observed during each phase could be related to the input of volatile-rich magma into the active part of the volcanic system of Tungurahua. This study shows that long-term BrO/SO2 molar ratios can be used as a proxy for the volatile status as well as temporal evolution of the volcanic system. | ||
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| contents | Recent long-term observations of the bromine monoxide (BrO) to sulphur dioxide (SO2) molar ratio in volcanic plumes have suggested a link between changes in the BrO/SO2 ratio and the volcanic activity. Nevertheless, understanding of the mechanisms determining this link is still limited due to the lack of studies on volcanic bromine release from the melt into the atmosphere. We present the results of 10 years (2007-2017) of observations of the BrO/SO2 molar ratio in the volcanic plume of Tungurahua volcano, Ecuador. Following the nearly continuous eruptive activity from 1999 to 2008, Tungurahua showed alternating phases of eruptive activity separated by periods of quiescence between late 2008 and March 2016, after which degassing intensity decreased below detection. By comparing the BrO/SO2 molar ratios collected from 13 eruptive phases to volcanic activity, this study aims to broaden the global observational database investigating their link. For this purpose, we combine three different methods to retrieve the BrO/SO2 molar ratio to analyse variations over different timescales. We identify a cyclic pattern in BrO/SO2 molar ratios for 11 of the 13 eruptive phases. The phases are initialised by low BrO/SO2 molar ratios between 2 and 6 x 10(-5) coinciding with vulcanian-type activity followed by a strong increase to ratios ranging between 4 and 17 x 10(-5) when eruptive dynamism shifts to strombolian. For five phases, we additionally observe a progressive decrease to the initial values of 2 to 5 x 10(-5) toward the end of the phase. This clear pattern indicates a connection between the BrO/SO2 molar ratio and eruptive dynamics. Based on our new data, we propose a conceptual model of the volcanic processes taking place at Tungurahua during the eruptive phases. Our data furthermore indicate that maximal BrO/SO2 molar ratios observed during each phase could be related to the input of volatile-rich magma into the active part of the volcanic system of Tungurahua. This study shows that long-term BrO/SO2 molar ratios can be used as a proxy for the volatile status as well as temporal evolution of the volcanic system. |
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| spelling | Warnach, Simon 1988- VerfasserIn (DE-588)1123672369 (DE-627)877349975 (DE-576)481885366 aut, Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity Simon Warnach, Nicole Bobrowski, Silvana Hidalgo, Santiago Arellano, Holger Sihler, Florian Dinger, Peter Luebcke, Jean Battaglia, Alexander Steele, Bo Galle, Ulrich Platt and Thomas Wagner, Variation of the BrO/SO 2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity, 02 July 2019, 14, Text txt rdacontent, Computermedien c rdamedia, Online-Ressource cr rdacarrier, Gesehen am 01.08.2019, Im Titel ist "2" tiefgestellt, Recent long-term observations of the bromine monoxide (BrO) to sulphur dioxide (SO2) molar ratio in volcanic plumes have suggested a link between changes in the BrO/SO2 ratio and the volcanic activity. Nevertheless, understanding of the mechanisms determining this link is still limited due to the lack of studies on volcanic bromine release from the melt into the atmosphere. We present the results of 10 years (2007-2017) of observations of the BrO/SO2 molar ratio in the volcanic plume of Tungurahua volcano, Ecuador. Following the nearly continuous eruptive activity from 1999 to 2008, Tungurahua showed alternating phases of eruptive activity separated by periods of quiescence between late 2008 and March 2016, after which degassing intensity decreased below detection. By comparing the BrO/SO2 molar ratios collected from 13 eruptive phases to volcanic activity, this study aims to broaden the global observational database investigating their link. For this purpose, we combine three different methods to retrieve the BrO/SO2 molar ratio to analyse variations over different timescales. We identify a cyclic pattern in BrO/SO2 molar ratios for 11 of the 13 eruptive phases. The phases are initialised by low BrO/SO2 molar ratios between 2 and 6 x 10(-5) coinciding with vulcanian-type activity followed by a strong increase to ratios ranging between 4 and 17 x 10(-5) when eruptive dynamism shifts to strombolian. For five phases, we additionally observe a progressive decrease to the initial values of 2 to 5 x 10(-5) toward the end of the phase. This clear pattern indicates a connection between the BrO/SO2 molar ratio and eruptive dynamics. Based on our new data, we propose a conceptual model of the volcanic processes taking place at Tungurahua during the eruptive phases. Our data furthermore indicate that maximal BrO/SO2 molar ratios observed during each phase could be related to the input of volatile-rich magma into the active part of the volcanic system of Tungurahua. This study shows that long-term BrO/SO2 molar ratios can be used as a proxy for the volatile status as well as temporal evolution of the volcanic system., 000 cm(-1), absorption cross-sections, aqueous fluid, atmospheric chemistry, basaltic melt, BrO, bromine monoxide, degassing, doas, eruption, mount-etna, novac, ratio, so2, temperature-dependence, Tungurahua, volcano, Bobrowski, Nicole VerfasserIn (DE-588)1025103068 (DE-627)721132693 (DE-576)185885179 aut, Hidalgo, Silvana VerfasserIn aut, Arellano, Santiago VerfasserIn aut, Sihler, Holger VerfasserIn (DE-588)1025643429 (DE-627)724443924 (DE-576)370576322 aut, Dinger, Florian 1990- VerfasserIn (DE-588)1067480501 (DE-627)818791713 (DE-576)426693272 aut, Lübcke, Peter VerfasserIn (DE-588)1052203817 (DE-627)787989169 (DE-576)407955194 aut, Battaglia, Jean VerfasserIn aut, Steele, Alexander VerfasserIn aut, Galle, Bo VerfasserIn aut, Platt, Ulrich 1949- VerfasserIn (DE-588)13766740X (DE-627)594831385 (DE-576)304832634 aut, Wagner, Thomas VerfasserIn aut, Enthalten in Frontiers in Earth Science Lausanne : Frontiers Media, 2013 7(2019) Artikel-Nummer UNSP 132, 14 Seiten Online-Ressource (DE-627)771399731 (DE-600)2741235-0 (DE-576)396697844 2296-6463 nnns, volume:7 year:2019 extent:14, http://dx.doi.org/10.3389/feart.2019.00132 Resolving-System kostenfrei Volltext, http://dx.doi.org/10.3389/feart.2019.00132 LFER, LFER 2019-08-12T00:00:00Z |
| spellingShingle | Warnach, Simon, Bobrowski, Nicole, Hidalgo, Silvana, Arellano, Santiago, Sihler, Holger, Dinger, Florian, Lübcke, Peter, Battaglia, Jean, Steele, Alexander, Galle, Bo, Platt, Ulrich, Wagner, Thomas, Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity, Recent long-term observations of the bromine monoxide (BrO) to sulphur dioxide (SO2) molar ratio in volcanic plumes have suggested a link between changes in the BrO/SO2 ratio and the volcanic activity. Nevertheless, understanding of the mechanisms determining this link is still limited due to the lack of studies on volcanic bromine release from the melt into the atmosphere. We present the results of 10 years (2007-2017) of observations of the BrO/SO2 molar ratio in the volcanic plume of Tungurahua volcano, Ecuador. Following the nearly continuous eruptive activity from 1999 to 2008, Tungurahua showed alternating phases of eruptive activity separated by periods of quiescence between late 2008 and March 2016, after which degassing intensity decreased below detection. By comparing the BrO/SO2 molar ratios collected from 13 eruptive phases to volcanic activity, this study aims to broaden the global observational database investigating their link. For this purpose, we combine three different methods to retrieve the BrO/SO2 molar ratio to analyse variations over different timescales. We identify a cyclic pattern in BrO/SO2 molar ratios for 11 of the 13 eruptive phases. The phases are initialised by low BrO/SO2 molar ratios between 2 and 6 x 10(-5) coinciding with vulcanian-type activity followed by a strong increase to ratios ranging between 4 and 17 x 10(-5) when eruptive dynamism shifts to strombolian. For five phases, we additionally observe a progressive decrease to the initial values of 2 to 5 x 10(-5) toward the end of the phase. This clear pattern indicates a connection between the BrO/SO2 molar ratio and eruptive dynamics. Based on our new data, we propose a conceptual model of the volcanic processes taking place at Tungurahua during the eruptive phases. Our data furthermore indicate that maximal BrO/SO2 molar ratios observed during each phase could be related to the input of volatile-rich magma into the active part of the volcanic system of Tungurahua. This study shows that long-term BrO/SO2 molar ratios can be used as a proxy for the volatile status as well as temporal evolution of the volcanic system., 000 cm(-1), absorption cross-sections, aqueous fluid, atmospheric chemistry, basaltic melt, BrO, bromine monoxide, degassing, doas, eruption, mount-etna, novac, ratio, so2, temperature-dependence, Tungurahua, volcano |
| title | Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity |
| title_alt | Variation of the BrO/SO 2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity |
| title_auth | Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity |
| title_full | Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity Simon Warnach, Nicole Bobrowski, Silvana Hidalgo, Santiago Arellano, Holger Sihler, Florian Dinger, Peter Luebcke, Jean Battaglia, Alexander Steele, Bo Galle, Ulrich Platt and Thomas Wagner |
| title_fullStr | Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity Simon Warnach, Nicole Bobrowski, Silvana Hidalgo, Santiago Arellano, Holger Sihler, Florian Dinger, Peter Luebcke, Jean Battaglia, Alexander Steele, Bo Galle, Ulrich Platt and Thomas Wagner |
| title_full_unstemmed | Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity Simon Warnach, Nicole Bobrowski, Silvana Hidalgo, Santiago Arellano, Holger Sihler, Florian Dinger, Peter Luebcke, Jean Battaglia, Alexander Steele, Bo Galle, Ulrich Platt and Thomas Wagner |
| title_in_hierarchy | Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity / Simon Warnach, Nicole Bobrowski, Silvana Hidalgo, Santiago Arellano, Holger Sihler, Florian Dinger, Peter Luebcke, Jean Battaglia, Alexander Steele, Bo Galle, Ulrich Platt and Thomas Wagner, |
| title_short | Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity |
| title_sort | variation of the bro so2 molar ratio in the plume of tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity |
| topic | 000 cm(-1), absorption cross-sections, aqueous fluid, atmospheric chemistry, basaltic melt, BrO, bromine monoxide, degassing, doas, eruption, mount-etna, novac, ratio, so2, temperature-dependence, Tungurahua, volcano |
| topic_facet | 000 cm(-1), absorption cross-sections, aqueous fluid, atmospheric chemistry, basaltic melt, BrO, bromine monoxide, degassing, doas, eruption, mount-etna, novac, ratio, so2, temperature-dependence, Tungurahua, volcano |
| url | http://dx.doi.org/10.3389/feart.2019.00132 |