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the claim
The upper atmosphere contains a sound waveguide channel.
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
4 sources for · 0 against

The upper atmosphere functions as a sound waveguide channel, allowing low-frequency infrasound waves to travel long distances via stratospheric and thermospheric ducts.

Evidence for · 4
Rich observations of local and regional infrasound phases made by the AlpArray seismic network after refinery explosion.
2019 · cited by 7
Paper [3] identifies tropospheric, stratospheric, and thermospheric acoustic phases that act as waveguides for infrasound propagation over long distances.
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The analysis

The retrieved papers consistently confirm that acoustic waves and infrasound can travel long distances in the atmosphere through ducting and waveguide phenomena in layers such as the stratosphere and thermosphere.

More for · 3
Evaluation of infrasound signals from the shuttle Atlantis using a large seismic network.
2008 · cited by 7
Paper [4] discusses infrasound energy ducting through atmospheric layers such as the stratospheric jet.
Assimilating atmospheric infrasound data to constrain atmospheric winds in a two‐dimensional grid
2021 · cited by 7
Paper [5] examines infrasound waves travelling through atmospheric channels in the upper atmosphere.
Efficient modeling of atmospheric infrasound propagation with the Semi-Analytical-Finite-Element (SAFE) method
2024 · cited by 2
Paper [11] explicitly details how downward refraction in the atmosphere enables infrasound to propagate efficiently inside acoustic waveguides.
The paper trail · every fact has a biography
first checked02 Aug 2026
judged → SUPPORTED · 8102 Aug 2026
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