Earths weird humming noise may be caused by stormy seas., page 1
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Topic started on 29-9-2004 @ 05:52 PM by jeeze louise
An enigmatic humming sound made by the Earth may be caused by the planet’s stormy seas, suggests a new analysis.

Japanese seismologists first described the Earth’s humming signal in 1998. It is a deep, low-frequency rumble that is present in the ground even when there are no earthquakes happening. Dubbed the “Earth’s hum”, the signal had gone unnoticed in previous studies because it looked like noise in the data.

www.newscientist.com...

During January and March, the hum came mainly from the North Pacific Ocean. Then the source swapped to the southern oceans above Antarctica, before shifting north again in October. Therefore, the hum appears to follow winter in each hemisphere, when ocean storms are at their worst.

This could be an explaination for the humming noise heard in several states, for some reason the noise may be on a different frequency there.
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