Fig. 2
From: Source mechanism of a VLP event immediately before the 2014 eruption of Mt. Ontake, Japan
Vertical velocity waveforms around the eruption onset time in a 0.1–0.5-Hz band. The instrumental responses were corrected. Distances from the summit to individual stations are shown with the station codes. Dark and light shaded areas represent the VLP event analyzed in the present study (11:52:05–11:52:11) and another VLP event not analyzed in this study (11:52:32–11:53:02), respectively