Scientists are slowly unlocking the secrets of the Earth’s mysterious hum

The world hums. It shivers endlessly.

It’s a low, ceaseless droning of unclear origin that rolls imperceptibly beneath our feet, impossible to hear with human ears. A researcher once described it to HuffPost as the sound of static on an old TV, slowed down 10,000 times.

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>>And when they were done, they were left with the first-ever underwater recording of the hum.

It peaked between 2.9 and 4.5 millihertz, they said

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Could this 2.9 and 4.5 millihertz signal be the collective energy of all the magma?

Giving off a radio glow.

or something else.

Hmmmmmm.. we discussed this one a while back.. hmmmmmm.. people’s opinions were not hmmmmmogeneous.

‘Rather, Webb said, most recent research suggests the primary cause is ocean waves — “banging on the sea floor pretty much all the way around the Earth.”’

Hmmmmmmmm

Ian said:

Hmmmmmm.. we discussed this one a while back.. hmmmmmm.. people’s opinions were not hmmmmmogeneous.

‘Rather, Webb said, most recent research suggests the primary cause is ocean waves — “banging on the sea floor pretty much all the way around the Earth.”’

Hmmmmmmmm

Yes, its was discussed a while back.

However this bit from the article rules out waves.

The scientists collected data from seismometer stations that had been placed in the Indian Ocean near Madagascar several years ago. These stations were meant to study volcanic hot spots — nothing to do with the hum — but the team worked out a method to clean the data of ocean currents, waves, glitches and other noise.

They “were able to reduce the noise level to approximately the same level as a quiet land station,” the Geophysical Union said in an accompanying article.

Hmm. I don’t think it’s a very good article.

4.5 millihertz… so that’s a wave period of about four minutes.

dv said:

4.5 millihertz… so that’s a wave period of about four minutes.

Could the core itself be generating the wave?

How long would it take a wave traveling at the speed of sound from the core of the Earth to the Surface?

Could the core itself be rotating every 4 minutes?

Tau.Neutrino said:

Could the core itself be rotating every 4 minutes?

No. The core’s rotational rate is similar to the surface, once per day.

After discouting ocean waves, three possibilities occur to me:
1. Atmosphere density waves.
2. Seismic tremors.
3. The effects of the Moon’s tides on the Earth’s crust.