Monitoring Volcanic Eruptions Using Trace Metals In Tree-Rings: Preliminary Results From Mt. Etna

Giammanco, S; Pokorny, B; Poličnik, H; Levanič, T

Risultato della ricerca: Paper

Abstract

8. Active volcanoes can influence surrounding vegetation both through passive degassing during quiescent periods and through eruptive degassing, by introducing into the atmosphere several metals as gases and particles. The chemical composition of tree-rings has been generally used to investigate the effects of anthropogenic gas emissions and dendrochemical methods have successfully recorded variations in the pollution levels. The use of tree-rings analysis in active volcanic areas has shown that vascular plants could be used as archives of volcanogenic metals deposition. Tree cores of Pinus Nigra and Populus tremula were collected in sites located both on the downwind (Citelli and Mt. Fontane sites) and on the upwind (Mt. Intraleo site) sectors of Mt. Etna in June 2008. Individual and composited tree-rings were analyzed by inductively-coupled-plasma mass-spectrometry for the determination of several trace elements (As, Cd, Li, Mn, Mo, Ni, Se, Sr, Pb, V). Tree cores were dated dendrochronologically before analysis, and their ages date back to 1915. The preliminary results show that some elements have significant differences in concentration between the two tree species analyzed, and in general metals are more concentrated in the samples from the downwind sites, hence more exposed to crater gas emissions. Furthermore, the temporal patterns of metal contents show some evident peaks likely related to some of the major flank eruptions of the volcano, particularly those occurred after 1945. This method can be used in many active volcanoes to reconstruct their past degassing rate and recognize possible eruptive cycles, thus helping forecast their future behaviour.
Lingua originaleEnglish
Stato di pubblicazionePublished - 2010

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tree ring
trace metal
volcanic eruption
degassing
volcano
metal
monitoring
gas
vascular plant
crater
mass spectrometry
chemical composition
trace element
plasma
pollution
atmosphere
vegetation
method
analysis

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Monitoring Volcanic Eruptions Using Trace Metals In Tree-Rings: Preliminary Results From Mt. Etna. / Giammanco, S; Pokorny, B; Poličnik, H; Levanič, T.

2010.

Risultato della ricerca: Paper

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title = "Monitoring Volcanic Eruptions Using Trace Metals In Tree-Rings: Preliminary Results From Mt. Etna",
abstract = "8. Active volcanoes can influence surrounding vegetation both through passive degassing during quiescent periods and through eruptive degassing, by introducing into the atmosphere several metals as gases and particles. The chemical composition of tree-rings has been generally used to investigate the effects of anthropogenic gas emissions and dendrochemical methods have successfully recorded variations in the pollution levels. The use of tree-rings analysis in active volcanic areas has shown that vascular plants could be used as archives of volcanogenic metals deposition. Tree cores of Pinus Nigra and Populus tremula were collected in sites located both on the downwind (Citelli and Mt. Fontane sites) and on the upwind (Mt. Intraleo site) sectors of Mt. Etna in June 2008. Individual and composited tree-rings were analyzed by inductively-coupled-plasma mass-spectrometry for the determination of several trace elements (As, Cd, Li, Mn, Mo, Ni, Se, Sr, Pb, V). Tree cores were dated dendrochronologically before analysis, and their ages date back to 1915. The preliminary results show that some elements have significant differences in concentration between the two tree species analyzed, and in general metals are more concentrated in the samples from the downwind sites, hence more exposed to crater gas emissions. Furthermore, the temporal patterns of metal contents show some evident peaks likely related to some of the major flank eruptions of the volcano, particularly those occurred after 1945. This method can be used in many active volcanoes to reconstruct their past degassing rate and recognize possible eruptive cycles, thus helping forecast their future behaviour.",
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T1 - Monitoring Volcanic Eruptions Using Trace Metals In Tree-Rings: Preliminary Results From Mt. Etna

AU - Giammanco, S; Pokorny, B; Poličnik, H; Levanič, T

AU - Calabrese, Sergio

PY - 2010

Y1 - 2010

N2 - 8. Active volcanoes can influence surrounding vegetation both through passive degassing during quiescent periods and through eruptive degassing, by introducing into the atmosphere several metals as gases and particles. The chemical composition of tree-rings has been generally used to investigate the effects of anthropogenic gas emissions and dendrochemical methods have successfully recorded variations in the pollution levels. The use of tree-rings analysis in active volcanic areas has shown that vascular plants could be used as archives of volcanogenic metals deposition. Tree cores of Pinus Nigra and Populus tremula were collected in sites located both on the downwind (Citelli and Mt. Fontane sites) and on the upwind (Mt. Intraleo site) sectors of Mt. Etna in June 2008. Individual and composited tree-rings were analyzed by inductively-coupled-plasma mass-spectrometry for the determination of several trace elements (As, Cd, Li, Mn, Mo, Ni, Se, Sr, Pb, V). Tree cores were dated dendrochronologically before analysis, and their ages date back to 1915. The preliminary results show that some elements have significant differences in concentration between the two tree species analyzed, and in general metals are more concentrated in the samples from the downwind sites, hence more exposed to crater gas emissions. Furthermore, the temporal patterns of metal contents show some evident peaks likely related to some of the major flank eruptions of the volcano, particularly those occurred after 1945. This method can be used in many active volcanoes to reconstruct their past degassing rate and recognize possible eruptive cycles, thus helping forecast their future behaviour.

AB - 8. Active volcanoes can influence surrounding vegetation both through passive degassing during quiescent periods and through eruptive degassing, by introducing into the atmosphere several metals as gases and particles. The chemical composition of tree-rings has been generally used to investigate the effects of anthropogenic gas emissions and dendrochemical methods have successfully recorded variations in the pollution levels. The use of tree-rings analysis in active volcanic areas has shown that vascular plants could be used as archives of volcanogenic metals deposition. Tree cores of Pinus Nigra and Populus tremula were collected in sites located both on the downwind (Citelli and Mt. Fontane sites) and on the upwind (Mt. Intraleo site) sectors of Mt. Etna in June 2008. Individual and composited tree-rings were analyzed by inductively-coupled-plasma mass-spectrometry for the determination of several trace elements (As, Cd, Li, Mn, Mo, Ni, Se, Sr, Pb, V). Tree cores were dated dendrochronologically before analysis, and their ages date back to 1915. The preliminary results show that some elements have significant differences in concentration between the two tree species analyzed, and in general metals are more concentrated in the samples from the downwind sites, hence more exposed to crater gas emissions. Furthermore, the temporal patterns of metal contents show some evident peaks likely related to some of the major flank eruptions of the volcano, particularly those occurred after 1945. This method can be used in many active volcanoes to reconstruct their past degassing rate and recognize possible eruptive cycles, thus helping forecast their future behaviour.

KW - tree-rings, Trace Metals,

UR - http://hdl.handle.net/10447/66532

M3 - Paper

ER -