5:15 PM - 6:30 PM
[SVC46-P02] Continuous observation of visible plume quantity, gas chemistry and water quality in Owakudani, Hakone volcano (2015-2016)
We also monitored water quality of downstream of the vent and volcanic gas around Owakudani area. Our monitoring shows that water temperature, its Cl content and CO2 content of volcanic gas also increased in December.
Such relationship between plume quantity and water and gas chemistry could indicate that there are aseismic upwelling of geothermal water in December.