Volcano That Screamed Before It Exploded - Then Everything Went Wrong - video Dailymotion

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Imagine a volcano so powerful that it screamed before it exploded! 🌋💥 That’s exactly what happened with Hunga Tonga-Hunga Ha'apai, and scientists were completely stunned. This eruption wasn’t just big—it sent shockwaves around the world, triggered tsunamis, and even reached space! But the craziest part? It made a mysterious sound that no one had ever heard from a volcano before. What caused this bizarre phenomenon, and what does it mean for future eruptions? Watch the video now and uncover the mind-blowing story of the volcano that screamed!   Credit: Redoubt Mountain from northeast: By Peter Stevens, CC BY 2.0, https://creativecommons.org/licenses/by/2.0/ , https://commons.wikimedia.org/wiki/File:Redoubt_Mountain_from_northeast.jpg?uselang=es Mount Vesuvius: By Pietro Fabris, CC0 1.0. https://creativecommons.org/publicdomain/zero/1.0/ , https://commons.wikimedia.org/wiki/File:Mount_Vesuvius_-_Interior_of_the_crater.jpg Kavachi Eruption: By Alex DeCiccio. CC BY-SA 4.0, https://creativecommons.org/licenses/by-sa/4.0/ , https://commons.wikimedia.org/wiki/File:Kavachi_Eruption.jpg OreilleexterneSchema: By Didier Descouens, CC BY-SA 3.0, https://creativecommons.org/licenses/by-sa/3.0/ , https://commons.wikimedia.org/wiki/File:OreilleexterneSchema.jpg Animation is created by Bright Side. ---------------------------------------------------------------------------------------- Music from TheSoul Sound: https://thesoul-sound.com/   Check our Bright Side podcast on Spotify and leave a positive review! https://open.spotify.com/show/0hUkPxD34jRLrMrJux4VxV   Subscribe to Bright Side: https://goo.gl/rQTJZz ---------------------------------------------------------------------------------------- Our Social Media: Facebook: https://www.facebook.com/brightside Instagram: https://www.instagram.com/brightside.official TikTok: https://www.tiktok.com/@brightside.official?lang=en Telegram: https://t.me/bright_side_official   Stock materials (photos, footages and other): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  For more videos and articles visit: http://www.brightside.me  ---------------------------------------------------------------------------------------- This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.

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00:00It's the 15th of January, 2022, 4.47 p.m. local time.

00:06It will start any moment.

00:07Here.

00:08Do you feel these jolts?

00:10The South Pacific is about to experience one of the most powerful volcanic eruptions ever

00:15recorded by modern instruments.

00:18The eruption begins at Hanga Tonga Hanga Ha'api, an underwater volcano in the Tongan Archipelago.

00:26The eruption itself is enormous.

00:28Its volcanic explosivity index is at least VEI 5, with the maximum being 8.

00:34It's as powerful as such historic catastrophes as Mount St. Helens in 1980 and Mount Vesuvius

00:41in 79 CE.

00:43The eruption releases a staggering 2.4 cubic miles of volcanic material and sends over

00:50150 million tons of water vapor into the stratosphere.

00:54This amount of water vapor would have been enough to fill 58,000 Olympic swimming pools.

01:00Additionally, the eruption generates the fastest underwater currents ever recorded and triggers

01:05large tsunamis that struck areas as far as Peru, more than 6,200 miles away from the

01:13volcano.

01:14And it takes at least four lives, with even more missing.

01:18But the craziest thing is that just before the eruption, 15 minutes ahead of time, there

01:23was a kind of warning.

01:26But as it often happens, people simply missed them.

01:30Two seismic stations about 466 miles away from the volcano, which is pretty far for

01:35this kind of thing, picked it up.

01:38They figured out it was a Rayleigh wave, which is a type of seismic wave that moves along

01:42Earth's surface.

01:44This wave was caused by a fracture in the ocean floor, where magma and seawater started

01:49to interact under a lot of pressure.

01:52That's likely what triggered the eruption.

01:55The crazy thing is that normally volcanic seismic signals are pretty small and can only

02:00be detected close to the volcano.

02:02But this Rayleigh wave traveled way farther than usual and was much stronger.

02:08It means there had to be a massive amount of movement going on beneath the surface before

02:13the eruption.

02:15While people on the ground didn't feel it, those distant sensors picked it up.

02:19This discovery is great for identifying volcanic threats earlier in the future and for improving

02:25early warning systems.

02:27If scientists can detect these seismic precursors, they could give a heads up before an eruption

02:32happens.

02:33That would give people time to evacuate and reduce the chances of injuries or property

02:37damage, especially for underwater volcanoes like this one, which can also trigger fatal

02:43tsunamis.

02:45Now, the eruption was big, but its impact was mostly contained.

02:50However, this discovery underlines how important seismic data is for predicting and preparing

02:56for these disasters.

02:59Even though this precursor wasn't used to issue a warning during this eruption, the

03:03idea that we could use this kind of information in real time during future eruptions is really

03:08promising, especially for underwater eruptions, which apparently might give us more warning

03:14time than we thought.

03:17Even though we wouldn't have been able to hear that precursor warning signal, there

03:21is a sound so loud it could actually finish you.

03:24And while such sounds are incredibly rare, the loudest noise ever recorded was indeed

03:30fatal to those who were close enough.

03:35On 27 August 1883, the eruption of the Krakatoa volcano in Indonesia created the loudest noise

03:43ever measured.

03:44It's thought to have been an astonishing 310 decibels at the source.

03:49To put this in perspective, a hand drill produces the sound of 98 decibels, the noise produced

03:56by a jet engine measures 140 decibels, and the sound of 180 decibels is capable of destroying

04:03your hearing tissue.

04:05So the sound Krakatoa produced reached more than 170 decibels at a distance of 100 miles,

04:13and sailors aboard a ship just 40 miles from the eruption had their eardrums burst from

04:18the sound.

04:20The explosion's reverberation was so powerful that it was heard 3,000 miles away.

04:26In fact, at a farm in Alice Springs, Australia, over 2,200 miles away, sheep farmers reported

04:33hearing what they thought were gunshots.

04:36The sound from Krakatoa traveled around the world multiple times.

04:40Although no one heard the explosion beyond 3,000 miles, spikes of atmospheric pressure

04:45were recorded in places as far away as Canada and England.

04:50Those must have been the sound waves produced by the eruption traveling around the globe.

04:58Sound above 150 decibels can potentially cause life-threatening harm.

05:02In particular, sounds between 170 and 200 decibels can result in lethal conditions,

05:09including burst lungs.

05:12Anything over 240 decibels could cause fatal injuries, and you don't even want to know

05:17what those are.

05:18I'll just say that those sometimes happen to cartoon characters, but rarely to people.

05:24The scientific explanation behind this is that sound is essentially a wave of pressure

05:29which can travel through both solids and liquids, and, in the case of an incredibly loud sound,

05:36pass right through the human body.

05:38If the pressure from such a sound is high enough, it can rupture eardrums and internal

05:42organs, causing significant, and often fatal, damage.

05:49Now you probably know how volcanoes sometimes have small earthquakes before they erupt.

05:54Well, they often produce this weird sound called a harmonic tremor.

05:59The sound kind of hums, and the frequency of the hum gets higher and higher until it

06:04suddenly stops just before the volcano erupts.

06:07The sound has been recorded at a bunch of volcanoes around the world, but the thing

06:12about Redoubt Volcano in Alaska is that its tremor is so intense people can actually hear

06:18it.

06:19It's like the volcano is letting out this crazy scream right before the eruption.

06:25According to a geophysicist at the University of Washington, the frequency of Redoubt's

06:30harmonic tremor is so high that it is barely perceptible as a low bass hum, and that's

06:36at its highest pitch.

06:38All because the pitch of Redoubt's tremor exceeds that of any other recorded volcano.

06:43It questions the limits of the existing models used to explain these phenomena.

06:48That's why researchers had to propose a new model to account for these unusually high-pitched

06:53tremors.

06:55Most volcanoes produce sound when magma bubbles vibrate as they rise through cracks in Earth's

07:00crust.

07:01But in the case of Redoubt, scientists believe that the harmonic tremor and associated earthquakes

07:06occur when magma is forced through a narrow opening under immense pressure.

07:11The thick magma sticks to the rock surface inside the conduit, a channel or a pipe that

07:16carries magma from a reservoir or chamber to the vent.

07:20As the pressure builds, the magma moves upward.

07:23This makes it stick again, until the pressure forces it to move once more.

07:27These sudden movements cause small earthquakes, which as the pressure increases, occur more

07:33rapidly and blend into a continuous, rising noise.

07:37So it's actually the rocks making the sounds.

07:41This new model is important, because it could help scientists better understand the eruptive

07:45cycles of volcanoes like Redoubt.

07:48It could also serve as a limited early warning system.

07:51By the time Redoubt began to scream like this, the volcano had already been erupting for

07:56a few days, so the tremor might only provide a few minutes or hours of warning before the

08:02next explosion.

08:03The harmonic tremor at Redoubt reaches an extremely high frequency, then falls eerily

08:09silent before the volcano erupts again.

08:12This pause occurs when the earthquake activity slows down and the two sides of the fault

08:17slip smoothly against one another.

08:19Maybe that's when even earthquakes can't keep up anymore.

08:23The new model may also apply to other volcanoes, such as the Soufrière Hills volcano on the

08:28Caribbean island of Montserrat.

08:32The research team is now planning to investigate why the pressure at Redoubt is concentrated

08:36in one specific spot.

08:38To move ahead in their research, the scientists have created two recordings of Redoubt's seismic

08:43activity.

08:44The first, a 10-second recording, compresses about 10 minutes of seismic sounds and harmonic

08:49tremors, sped up 60 times.

08:53The second, a 1-minute recording, condenses roughly an hour of activity, including more

08:58than 1,600 small earthquakes that had occurred before Redoubt's first explosion with harmonic

09:04tremor.

09:05These recordings could provide crucial insight into the dynamics of volcanic eruptions and

09:10the signals that precede them.

09:13That's it for today!

09:16So hey, if you pacified your curiosity, then give the video a like and share it with your

09:20friends!

09:21Or if you want more, just click on these videos and stay on the Bright Side!

Volcano That Screamed Before It Exploded - Then Everything Went Wrong

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