Air Wave 3
Air Wave 3 : General. Audible sounds or infrasound waves are sometimes generated by earthquakes; a local earthquake may sound like distant thunder, canon shots or the rumbling from a passing truck or tank on a bumpy road. Instrumental measurements show that these sounds arrive simultaneously with the first P waves (Hill et al., 1976). More long-period (seconds to hours) acoustic gravity waves may also be excited by great earthquakes, as well as by volcanic explosions, meteorite falls, and nuclear blasts in the atmosphere. See: Ben-Menahem and Singh (2000)
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