[SVC35-P06] On the H2S concentration continuous observation at Kurikoma volcano
Keywords:Kurikoma Volcano, H2S gas, continuous observation, climer care
Active fumaroles can have been observed along the ohjigoku-dani valley and showa crater, especially, trails are maintained along ohjigoku-dani valley, and many climbers are exposed to volcanic gas.
We installed the environmental h2s sensors which called “odalog” (http://www.jmsystem.co.jp/kazan/odalog.html) in order to ascertain concentration of h2s along the trail and beside the showa crater during june, 6 to october, 3, 2018.
The result of our observation, high concentration h2s gas can been observed, especially, instantaneous maximum concentration can have been observed 334ppm at showa crater, and 38ppm at ohjigoku-dani valley. It is necessary to take immediate measures against volcanic gas for climbers.