MOESM1 of Infrasonic wave accompanying a crack opening during the 2015 Hakone eruption

Additional file 1. Photographs near the vents (Owakudani) taken using a time-lapse camera before and during the rapid tilt change

MOESM2 of Infrasonic wave accompanying a crack opening during the 2015 Hakone eruption

Additional file 2. Calibration test for the microphone at the OWD station

MOESM3 of Infrasonic wave accompanying a crack opening during the 2015 Hakone eruption

Additional file 3. Shift in the peaks and node of the seismic-infrasonic correlation resulting from background seismic oscillation

MOESM4 of Infrasonic wave accompanying a crack opening during the 2015 Hakone eruption

Additional file 4. Strain changes using the open crack model estimated by InSAR data

MOESM1 of Continuous seismic monitoring of Nishinoshima volcano, Izu-Ogasawara, by using long-term ocean bottom seismometers

Additional file 1. Detection, location of characteristic events and comparison with aerial observations