Very rare low-pitched "risers" which are called that way because they rise in pitch. These are "natural VLF radio" signals coming from Earth's Magnetosphere and were recorded in central Manitoba, Canada along with the aurora. Nature, Magnetosphere
Description: Very rare low-pitched "risers" which are called that way because they rise in pitch. These are "natural VLF radio" signals coming from Earth's Magnetosphere and were recorded in central Manitoba, Canada along with the aurora.
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