A measurement of heat-discharge rate from steaming ground in volcanoes: Development of new technique for a volcano surveillance

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We have developed a new measurement system for volcano surveillance. In this study, I focus on a method of taking reliable measurements of the heat-discharge rate through steaming ground. The system enables to electrically measure a conductive, convective and latent heat carried by volcanic gas. To apply the new measurement system to an actual volcano, measurement sites of heat-discharge rate have been deployed at the northern slope of Owakudani, Hakone volcano. Besides, an air-borne IR survey was carried out above these sites. I expect the new technique will be applied to test its validity at Hakone volcano.