The Hum.

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Re: The Hum.

Postby Joe Hillshoist » Wed Oct 23, 2019 9:15 pm

Satellite images have captured a usually invisible phenomenon known as atmospheric gravity waves pulsing through clouds off Western Australia's north-west.

Thunderstorms in the Pilbara and Kimberley on Monday and Tuesday triggered the waves, which spread out over the Indian Ocean and combined with a plume of dust to create a spectacular and rarely-seen display.

Bureau of Meteorology (BOM) senior meteorologist Adam Morgan said atmospheric gravity waves were basically ripples in the sky.

"When you think of waves in the ocean, they're a type of gravity wave," he said.

"When you throw a rock in a pond and you see the ripples flowing out, they're gravity waves as well.

"Essentially gravity waves are disturbances in any sort of fluid, so we see them often in water, but the atmosphere is a fluid as well — so any sort of disturbances in there can generate waves."

"There was a big thunderstorm over the north-west of WA and the disturbance in this case was the cold air falling out of the thunderstorm and into the warmer air near the surface," Dr Morgan said.

"The difference in density there causes the disturbance and then the gravity wave can travel out as the cold air spreads out.

"The disturbance will exist until everything rebalances itself, that's why they can travel a long way.

"They travel a really long distance until they peter out. If you've ever been to the swimming pool and someone jumps in and does a dive bomb at one end of the pool, you might get the wave right at the other end of the pool after a bit of time."


https://www.abc.net.au/news/2019-10-23/ ... h/11633004

Check the page for some good photos including the satellite photo that shows the waves.
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Re: The Hum.

Postby elfismiles » Thu Oct 24, 2019 2:27 pm

Cool - thanks Joe.

Maybe I should call of that airstrike...

Joe Hillshoist » 24 Oct 2019 01:15 wrote:
Satellite images have captured a usually invisible phenomenon known as atmospheric gravity waves pulsing through clouds off Western Australia's north-west.


https://www.abc.net.au/news/2019-10-23/ ... h/11633004

Check the page for some good photos including the satellite photo that shows the waves.
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Re: The Hum.

Postby liminalOyster » Fri Jan 10, 2020 2:18 am

Origin of mystery humming noises heard around the world, uncovered
By Ashley Strickland, CNN

Updated 5:52 PM ET, Thu January 9, 2020

In 2018, a multitude of seismic signals were detected by earthquake monitoring agencies all over the world in May and June. They created a weird humming sound and some of the signals detected in November of that year had a duration of up to 20 minutes.

The signals and humming triggered "the curiosity of the scientific community," according to a new study that explains what happened: the formation of a new underwater volcano.
The unusual amount of earthquakes were traced to the island of Mayotte in the Indian Ocean, one of several in the Comoros archipelago found between Africa and Madagascar.

Scientists detected 7,000 tectonic earthquakes within the scope of the study. These kinds of earthquakes occur when Earth's tectonic plates become stuck as they move alongside one another. The pressure that allows them to move on causes earthquakes.
The most severe earthquakes reached a magnitude of 5.9 in May 2018.

They also encountered 407 long-period seismic signals. These Very Long Period signals, called VLPs, are harmonic and low, reminiscent of a double bass or large bell. And their 20- to 30-minute signals could be detected hundreds of miles away.
The earthquakes and signals were coming from about 22 miles off the eastern coast of the island. Researchers couldn't see any signs of volcanic activity in this area, but they suspected that magmatic processes may be forming one.
Unfortunately, there was no seismic network on this part of the ocean floor, meaning they were only able to get measurements from the island, Madagascar and Africa.
But they noticed a lowering of the island's surface by seven inches, indicating activity linked to the earthquakes.
What tourists don't get about New Zealand's White Island volcano
What tourists don't get about New Zealand's White Island volcano
New seismological methods developed by the researchers helped them piece together a year-long timeline to reconstruct what happened. Their study published this week in the journal Nature Geoscience.
The first phase involved magma rapidly rising from a reservoir in the mantle 18 miles below the Earth's surface. This opened a channel in the ocean floor, allowing the magma to flow and begin forming a new underwater volcano.
An oceanographic campaign in May 2019 showed that a volcano had formed in the same spot.
During the formation of the underwater volcano, earthquake activity dropped, and the ground of Mayotte lowered. Then, the VLP signals began.
Scientists just discovered 'stormquakes' -- but don't worry, you're not in danger
Scientists just discovered 'stormquakes' -- but don't worry, you're not in danger
"We interpret this as a sign of the collapse of the deep magma chamber off the coast of Mayotte," said Eleonora Rivalta, study co-author from the German Research Center for Geosciences GFZ. "It is the deepest and largest magma reservoir in the upper mantle to date, which is beginning to empty abruptly."
As dramatic as all of this sounds, it was hardly noticeable on the island itself. Mayotte is one of four volcanic islands in its archipelago and home to about 260,000 people, according to the study. It last erupted about 4,000 years ago.
"Since the seabed lies 3 kilometres below the water surface, almost nobody noticed the enormous eruption," said Torsten Dahm, study co-author and professor of geophysics and seismology at the University of Potsdam in Germany. "However, there are still possible hazards for the island of Mayotte today, as the Earth's crust above the deep reservoir could continue to collapse, triggering stronger earthquakes."

https://www.cnn.com/2020/01/09/world/se ... index.html
"It's not rocket surgery." - Elvis
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Re: The Hum.

Postby elfismiles » Fri Jan 10, 2020 4:19 pm

No. :wallhead:

Responded to others sending me this and other news outlets coverage.

MacPherson says it perfectly well:

The Hum has not been solved. The World Hum Map and Database www.thehum.info (Dr. Glen MacPherson)

https://www.youtube.com/watch?v=H6NMMlyqAgM

liminalOyster » 10 Jan 2020 06:18 wrote:
Origin of mystery humming noises heard around the world, uncovered
By Ashley Strickland, CNN

Updated 5:52 PM ET, Thu January 9, 2020
https://www.cnn.com/2020/01/09/world/se ... index.html
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Re: The Hum.

Postby liminalOyster » Fri Jan 10, 2020 8:10 pm

Sorry Elfis. Didn't mean to imply support, just collating data points.
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Re: The Hum.

Postby elfismiles » Wed Jan 15, 2020 11:58 am

And thank you. Just frustrated to see the MSM leveraging interest in a very human mystery with such misleading "news".

liminalOyster » 11 Jan 2020 00:10 wrote:Sorry Elfis. Didn't mean to imply support, just collating data points.
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Re: The Hum.

Postby Pele'sDaughter » Thu Jan 16, 2020 8:29 am

I couldn't believe they would claim that it was solved either. How can a volcano far away from the US have caused the bizarre sounds heard in various places here? Of all the causes I have imagined, volcanoes were completely missing. I would like to see a time line of observations of these sounds to one of volcano eruptions or some other clear evidence of a connection before accepting it.
Don't believe anything they say.
And at the same time,
Don't believe that they say anything without a reason.
---Immanuel Kant
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