Decoding tornadoes' infrasound waves

Infrasound waves oscillate at frequencies humans can't hear, but they're extremely useful for monitoring nuclear blasts because infrasound decays so slowly within our atmosphere that it can wrap around Earth multiple times. ...

Detecting volcanic eruptions

To borrow from a philosophical thought experiment: If a volcano erupts in a remote part of the world and no one hears it, does it still make a sound?

Low-frequency sea sounds ring clear at high altitudes

A new study shows microphones suspended from helium balloons in the stratosphere can detect low-frequency sounds from ocean waves. The new method shows promise for detecting acoustic signals from natural disasters and nuclear ...

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