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| Titel |
TDL, UV-DOAS, COSPEC and miniDOAS measurements of the degassing from the summit crater of Teide volcano, Tenerife, Canary Islands |
| VerfasserIn |
Jose Barrancos Martinez, Christian Fischer, J. Ignacio Roselló, Nemesio Perez, Konradin Weber, Millán Millán |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250053711
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| Zusammenfassung |
| Recent analysis of Teide fumaroles gas revealed the presence of SO2 content in the
volcanic-hydrothermal discharges from the summit crater while his geochemical observation
was not reported in the past. For to investigate SO2 emission rates from the summit crater of
Teide volcano, COSPEC and miniDOAS measurements were performed in a stationary mode
on June, 2005 but the obtained results indicated that SO2 emission rates from the summit
crater of Teide volcano were lower than the detection limit. TDL and UV-DOAS were used at
Teide volcano in September, 2005, August, 2006 and May, 2010 for remote measurements of
chemical composition of the crater atmosphere. Parallel to these measurements a CO2
diffuse flux emission campaign was performed inside the crater containing 140 points
and also samples were taken of fumaroles. The concentrations obtained by remote
sensing systems were used to calculate the CO2/H2S and CO2/SO2 ratios in the crater
atmosphere of Teide volcano. These molar ratios calculated were 1200 for CO2/H2S and
150E+03 for CO2/SO2 during September, 2005 and 920 and 42E+03 in the same order
for August, 2006. During this study, a maximum total output emission, diffuse
and visible, of SO2 was estimated in 1.87 Kg-
day-1 for the Teide’s summit crater.
These geochemical observations about the low rates of emission of SO2, not support
at present the reawakening of Teide volcano as others scientists have described. |
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