[S-VC43] Active Volcanism

[SVC43-P13] Seismic Background Level Increased Prior to the 2015 Hakone Phreatic Eruption Despite Declining Seismicity

*Tsukasa Kobayashi¹, Ryo Kurihara¹, Mie Ichihara² (1. Hot Springs Research Institute, Kanagawa, 2. Earthquake Research Institute, University of Tokyo)

Keywords:Seismic background level (SBL), Hakone volcano, phreatic eruption, volcano monitoring