6:15 PM - 7:30 PM
[SVC45-P26] Self-potential mapping around the summit area of Ontake volcano and continuous telluric observations
Keywords:Self-potential, Ontake volcano, continuous telluric observations
In February 2007, we established a continuous SP observation network the eastern submontane area of Ontake volcano with the aim of monitoring the crustal/hydrothermal activity. This network consists of 8 long dipole telluric observations using leased telephone infrastructures as the cables connecting the electrodes and is about 10 km away from the summit. We will also introduce long-time variations detected by this telluric observation network and report the presence or absence of a remarkable change around the time of the 2014 phreatic eruption.