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A comment on What is the mysterious 'global Hum' and is it simply noise pollution? (2019). Parent comment

Re:What is the mysterious 'global Hum' and is it simply nois... by quicklime on Sunday October 11, 2020 @10:24AM (#24746003)
> I've heard it as far as 20mi/30km away from a shipping lane in the US

Have you taken a look at The World Hum Map (linked from the article)? There are a lot of data points that are deep inland, way more 30 kms. For example there points in the Australian outback, and all through the "flyover states" in the US.

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Re:What is the mysterious 'global Hum' and is it simply nois... by withinboredom on Sunday October 11, 2020 @12:48PM (#24747100)
I did, a lot of cities are near navigable rivers that barges go down. I don't think all hums are boats, but I'd be willing to venture that most near waterways are.
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