GI researcher David Fee and graduate student Alex Iezzi deploy an infrasound sensor on the active Yasur Volcano, Vanuatu.

When a volcano erupts it releases seismic energy into the ground and acoustic energy (sound) into the air. GI researchers use low frequency sound, termed infrasound, to study and monitor volcanic eruptions in Alaska and around the world. Infrasound provides valuable information on eruption dynamics and can be used to detect, locate, characterize, and quantify eruptive activity. GI researchers also use infrasound to determine the amount of ash and gas released during an eruption by combining output from numerical models with other measurements, such as gas and seismicity. 

Group contact: David Fee