Grumbling, rumbling volcanoes signal eruption
Thursday, May 10, 2012 - 11:01
in Earth & Climate
When volcanoes erupt, they create a stunning visual spectacle for anyone watching, but they also emit impressive noises that range from low rumbles to concussive blasts. Some of the sounds are below the range of human hearing, and a new study suggests they can be used to better understand and monitor eruptions.