AI Summary

Researchers at MIT Lincoln Laboratory deployed commercial off‑the‑shelf sensors beneath Arctic sea ice in 2024 and recorded a range of natural and anthropogenic sounds, including ice cracking, beluga whale vocalizations, and engine noise from shipping vessels. Analyzing the data, the team identified distinct acoustic signatures that could be used to monitor under‑ice activity and assess environmental conditions. They also conducted experiments testing communication through the ice, demonstrating that certain frequencies can propagate effectively across the frozen layer. The findings suggest a potential method for real‑time monitoring of Arctic ecosystems and human activity beneath the ice.

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