Sulfur dioxide emissions from Papandayan and Bromo, two Indonesian volcanoes

Indonesia hosts 79 active volcanoes, representing 14% of all active volcanoes worldwide. However, little is known about their SO2 contribution into the atmosphere, due to isolation and access difficulties. Existing SO2 emission budgets for the Indonesian archipelago are based on extrapolations and i...

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Bibliographic Details
Published inNatural hazards and earth system sciences Vol. 13; no. 10; pp. 2399 - 2407
Main Authors Bani, P, Surono, Hendrasto, M, Gunawan, H, Primulyana, S
Format Journal Article
LanguageEnglish
Published Katlenburg-Lindau Copernicus GmbH 02.10.2013
Copernicus Publ. / European Geosciences Union
Copernicus Publications
Subjects
Air pollution
Atmospheric and Oceanic Physics
Earth Sciences
Environmental aspects
Physics
Sciences of the Universe
Sulfur dioxide
Volcanology
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Summary:Indonesia hosts 79 active volcanoes, representing 14% of all active volcanoes worldwide. However, little is known about their SO2 contribution into the atmosphere, due to isolation and access difficulties. Existing SO2 emission budgets for the Indonesian archipelago are based on extrapolations and inferences as there is a considerable lack of field assessments of degassing. Here, we present the first SO2 flux measurements using differential optical absorption spectroscopy (DOAS) for Papandayan and Bromo, two of the most active volcanoes in Indonesia. Results indicate mean SO2 emission rates of 1.4 t d−1 from the fumarolic activity of Papandayan and more than 22–32 t d−1 of SO2 released by Bromo during a declining eruptive phase. These DOAS results are very encouraging and pave the way for a better evaluation of Indonesian volcanic emissions.
ISSN:1684-9981
1561-8633
1684-9981
DOI:10.5194/nhess-13-2399-2013