Balloon fleet senses a 7.3 magnitude earthquake from the stratosphere - Interesting Engineering

A fleet of giant balloons equipped with a network of sensors detected a large earthquake from the stratosphere in a world first.

Balloons and sensors floating through the stratosphere detect infrasound released into the atmosphere when an earthquake hits. Ballons, 11 meters in diameter and weighing 30 kilograms, can support up… [+1103 chars]

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