A fire’s rumble reveals where it’s burning
Researchers have found that low-intensity grassland fires produce a low-frequency hum detectable by acoustic sensors. This could help monitor weak fires more effectively, offering a new tool for fire management. The discovery highlights how sound waves can track burning areas without direct observation.
A low-intensity grassland fire “hums” loudly enough to be monitored by sound alone, researchers report in the July 16 Geophysical Research Letters. Acoustic sensors deployed near a prescribed Idaho burn picked up the low-frequency rumble it gave off and followed where it was burning — a sign the tec…
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