Fig. 5From: Infrasonic wave accompanying a crack opening during the 2015 Hakone eruptionSchematic illustration of the occurrence of an infrasonic wave accompanied by the crack opening. a The abrupt increase in the seismic amplitude occurred at 07:32:30 on June 29, 2015. b The infrasonic wave was generated coincident with the crack opening after 07:32:50 resulting from the strain transfer due to the open crackBack to article page