1:45 PM - 3:15 PM
[O08-P14] Observation of volcanic gases using a simple dilution method at the active volcanoes "Ikeda and Yamagawa”
Keywords:volcanic gases
There are 11 active volcanoes in Kagoshima Prefecture. The JMA has designated five volcanoes as "volcanoes under constant observation" and the remaining six volcanoes are not under constant observation. In some cases, such as the recent eruptions of ”Kuchinoerabuｰjima” and ”Ontake”, it is difficult to detect precursor changes by geophysical observations alone, and observations using various methods, including geochemical observations, are required to detect volcanic eruptions at all active volcanoes.Therefore, geochemical and other observations are desirable for all active volcanoes.
Therefore, we have been conducting regular observations of volcanic gases using a simple method that combines inexpensive commercial sensors and gas detector tubes to predict eruptions at the active volcanoes Ikeda and Yamakawa since 2021. In this report, we summarize the three years of observation and discuss the chemical composition and compositional changes that can be used as chemical indicators of eruptions and volcanic activities
Therefore, we have been conducting regular observations of volcanic gases using a simple method that combines inexpensive commercial sensors and gas detector tubes to predict eruptions at the active volcanoes Ikeda and Yamakawa since 2021. In this report, we summarize the three years of observation and discuss the chemical composition and compositional changes that can be used as chemical indicators of eruptions and volcanic activities