georgel
Behind Every Blade of Grass
Charter Member
Benefactor
Supporting Member
Multi-Factor Enabled
I don't think it's this singular event, but general increased seismic activity. There have been a few other eruptions as well. Billions of tons of molten rock flowing in our mantle might make some noise.I saw an article on my cellphone from "Futurism" about an underwater volcano being the source of the hum.
Here's the article:
https://futurism.com/the-byte/source-bizarre-humming-noise-underwater-volcano