Japan's Massive Active Super Volcano and Its Horrifying 30,000-Year-Old Eruption
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- čas přidán 25. 05. 2023
- #supervolcano #japan #volcanology #geology #earthscience #earthsciences #geography #oceanic #ocean #arctic #volcanoes #volcanoeruption #geoscience #volcanicarc #japanese #japaneseislands #kyusu #caldera #airacaldera #supervolcanoes
The Aira Caldera is one of the larger recent supervolcanic eruptions to have occurred on our planet. With it roaring to life in a spectacular fashion at some point around 30,000 years ago. This massive eruption formed a pyroclastic flow that was over 800 cubic kilometers in size, and released an additional 300 cubic kilometers worth of tephra ontop of this, at a minimum, too. It covered nearby Japan in a layer of ash, and further plunged the already freezing planet into an ever deeper cold spell, due to the commencement of a volcanic winter, post eruption.
Nowadays this volcano is still very much active, and alive, and it's been embodied by the sukurajima stratovolcano. Which took over after the aira caldera eruption occurred, and it itself formed around 26,000 years ago. This is one of the most active volcanic structures to exist in Japan, but thankfully, recently, that has encompassed small, and somewhat tolerable eruptions... For now.
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OzGeology is an Australian-based CZcams channel that specializes in creating high-quality documentaries on Earth sciences and natural disasters. The content is designed to be easy to digest and covers a wide range of topics, not only focusing on geology but occasionally exploring other scientific areas as well.
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Im going to add one more comment , be it for the algorithm or just personal opinion, living here in japan for the last 5 years has reminded me that life is special and that nature is a god... you respect life more each time you live through a massive earthquake or even a tremor....
Close. God created nature.
@@lanesaarloos281 could be nature created god... at least till otherwise proven 😂 but there’s definitely some core consciousness that links all things that for sure....
We just had an earthquake in Victoria... it does feel like God is shaking you around 😅
@@andykerass3695 😂 it was a 3.8 or a 2 on the scale in Japan. That’s like a tremor here.... no one would even stop their dinner for it 😂 we had a 6.9 on Saturday and that’s not even worth holding on to your TV or beer....
@@NissanR33Ztune lol fair call 😅 we had a bigger one a couple of years ago, probably still small by your standard lol. But I got a taste lol
Japan is one of my very favorite places to visit. Beautiful people, beautiful place. Thank you for publishing this video.
I love all the videos and they've been great revision for my geology exams. Can I ask if you would do a video on pyroclastic lightning as I think it's such an interesting nature event
Have you done a segment on Black Mountain, known to the Aboriginals as Kalkajaka meaning ‘the place of the spear’? I’d love a geologist’s explanation on the creation of this ‘Paranormal’ location.
One of my favorites. I’d really like to hear information like this about other areas around the world. I think the channel would really benefit from this!
If you are unfamiliar with the Shinto Creation Myth I highly recommend looking into it. There is so much metaphor for Volcanic and Oceanic worship but as opposed to many of the Pacific Islander versions of this form of worship it is less Shamanistic. It is a really cool way to write geological processes into verse and lore stating the Islands of Japan were formed when Izanami and Izanagi dipped their spears into the ocean and strided up the mud at the bottom.
You deserve more subs.
Love that there is so much more new content. Always amazing video and i am happy to be able to support
Thx Oz, awesome as always!!
Another fabulous clip. Can i offer a suggestion to put major present day cities on you country maps like the location of the Toyko to help us uderstand the blast zone etc?
Fantastic idea and would be very helpful.
So it all started with a big bang. Another fascinating and informative video.
Another awesome video bro
Given what you have happening at the moment yet more proof why you should keep producing your excellent work.👍👋
Nice! It'd be interesting to hear about Kurile lake caldera in one of next videos, it's kinda similar to Aira
Excellent video brother!
Would love an in depth video on Taupo. Did previous eruptions effect Australia, nearby islands, other places worldwide? How about effects on different civilizations?
Nature is God! Respect it
Oi Oz, i truly love and appreciate your work mate.🙏😀🙏
311 liked matey, just wondering if any gold was uplifted by the volcano?
Idk if yall take content requests or recomendations, feel free to ignore this if you feel like it, but it would be interesting for this channel to cover the Popocatépetl volcano in Mexico (kind of a mouthful, though it's also nicknamed Don Goyo, which is easier) which has had a lot of activity in the last few days that thankfully seems to be decreasing slightly, hopefully it doesnt blow up for real because theres easily around 30 million people that could get affected by it. The whole región is part of a system of volcanic activity called the "transversal volcanic arc". Its really interesting from a geology and vulcanology perspective and seems right up this channel's alley.
Interesting timeline too... almost matches the idea of pole shift and the micro nova events spoken about.
I was watching this when I took especial note of something said almost in passing. That thing was 'volcanic vents'- plural. OK, it might seem a strange thing to note, but its something fundamental when super volcanoes and their eruptions are discussed. Because most people are more familiar with ordinary strato-volcanoes, they think of eruptions as coming from a single vent, or at mot, two or three, like Etna. Those who've seen videos of Stromboli, might even think of several vents erupting together at most.
Whilst it is quite possible that a supervolcanic eruption might involve a central vent, it will almost certainly include a number of far smaller vents, possibly following ring fractures around the uplifted area over the magma chamber. And there's a very good chance this will include dozens, of not hundreds, of small vents spewing ash into the atmosphere, at least at first.
Because we haven't seen a supervolcanic eruption in modern times, we've no way of knowing exactly how such an eruption will unfold. However, we have seen some big explosive eruptions, such as the 1883 eruption of Krakatoa, and we know that they can start with several smaller vents opening up and erupting simultaneously. Whether they later merge into one massive vent or not is uncertain,. What is certain is that these eruptions don't begin with a single massive nuclear style explosion, as is so often depicted in movies.
The movie VOLCANO was quite interesting in the scene where the volcanologists were trying to figure out what would happen to start a super eruption of Yellowstone. The had a program and a three D model that depicted different scenarios including multiple vents opening up after a minor eruption. That movie is quite worth watching and is available here on CZcams.
15 hours and already nearly 8K views. Just goes to show that many find this channel and content highly interesting.
When my nephew was very young I gave him a number of small mineral and rock samples and took him out to do some rock hounding of his own. Little did I know that those activities would lead him to become a volcanologist!
I visited Kagoshima many years ago and was impressed that the volcano was erupting continuously but people there just carried on. They took umbrellas with them everywhere and there was a fleet of street sweepers to clean up the roads.
Geology hub must see this
Letting the algorithm know that this is a good watch
The way you worded the video title almost implies Japan only has one active super-volcano when it fact it has at least 2-4, aside from Aira, there's also the Aso caldera and if you include VEI 7 calderas also the Kikai caldera in the Ryukyu islands and Kussharo caldera in Hokkaido, if not even more active VEi 7 calderas.
The two Ata calderas are each as big as Aira and are very close to each other, pretty much a double supervolcano.
@@psalmerperena4120 Yeah, and apparently Kirishima has done a VEI 7 too whilst also connected to Aira. I wasn't 100% certain if Ata was an entirely separate system or connected to Aira in some way.
Japan is overall pretty nuts when it comes to large caldera systems.
Kyushu gets hammered by natural disasters. A beautiful place to visit.
I guess the Kagoshima graben also explains the massive caldera system that is Aso in the central part of Kyushu island. Would that make that zone a back-arc basin despite the Ryukyu islands in the south, which besides Kikai are more akin to main arc volcanoes?
The Ryukyu islands appear to be normal main arc volcanoes however remember that the graben talked about here isn't far from the boundary between the Amur plate and Eurasia with the Philippian plate subducting under Eurasia so you are really dealing with a spatially close but distinct arc system. Japan is a clusterfuck meeting place of tectonic plates as you have Amur which is rifting away from Eurasia moving southeast largely via rotation, as well as subduction of the Pacific and Philippian plates.
There is a back arc basin associated with the Ryukyu islands however its the Okinawa through.
Oh and while older the Sea of Japan and the South China Sea were also formed via back arc basin rifting so back arcs abound in this greater region.
Someone else pointed out that while the tectonic cause is related Aso is in a different graben so even though many features are in close proximity there is so much going on here where for all intents and purposes 4 different major tectonic plates are coming together.
I find it hard to believe any one volcano can cause an earth sized sun blockage. Look at the space photos on the recent Tonga event. That went into the stratosphere, and it was as big as you like for some similar single explosion from one of those japan islands. Did you notice anything like lasting sun blockage from Tonga? Even if every active volcano on earth exploded at the same time, they would have to continually do that for weeks if not months to bring about true global sunlight blockage.
There's no comparison between an eruption like Tonga and a supervolcanic event. With that being said, Tonga did cause climatic changes. But due to it mainly being a phreatomagmatic eruption, the climatic effects were massively increased levels of stratospheric water vapor, leading to historic flooding in Australia last year. Not even the 1816 Year Without a Summer can compare to an actual supervolcanic eruption, and that 1816 volcanic winter ended up killing millions in Europe due to widespread famines created by significant crop failures due to inhospitable weather conditions, even though the eruption itself came from the Indonesian volcano of Tambora. So yeah, you can bet an actual supervolcano would shroud the planet, that's for sure.
lol mind "bleep", love it as it truely is, the power of this planet..respect..
It's a real shame these docs aren't lasting longer
Will it go off again soon?
I'm Japanese and living in Kagoshima where has aira caldela. I often surveying about Sakura-jima but it is first time to hear that Kagoshima-graben. Please tell me what date comes from your video? I guess the graben is misunderstand of Kirishima volcanic zone, how do think?
初耳なのですが鹿児島地溝帯とは？霧島火山帯と間違ったのでしょうか？わかる方ご連絡下さい。
面白いですね。
Not each Caldera is a supervolcano. The theory sais, a hot spot under the crust mixes the basalt of the plume with the molten crust basement. Volcanic arcs are the children of subduction.
Is this an AI channel? Your post frequency is pretty astonishing.
i had the feeling as well. The part that stuck out to me was when he started explaining the volcanic winter again in the latter part of the video.
wow there’s a super volcano everywhere now
what will we ever do
I thought it was a very large VEI7, but it was a low end VEI8
What are the parameters that Define a "Supervolcano"....??
There is another supervolcano to the north of Sakurajima, mount Aso
Aira, aso, and kikai, and maybe iwo jima
😂mind fuck. It gets worse if you try and explain the volcano Mt Paektu.
Actually i would be interested how the kagoshima graben extends to the Aso supervulcano. I always thought thats the real monster in Kyushu..I am looking for a detailed map of hot springs in Japan may be to check one of them for a holiday home in snow country. Heating the home with the heat of the vulcanos everywhere seems to be the way to go.
Aso sits on a different graben called the Beppu-Shimabara graben although how it formed and the type of activity it shows is similar to the calderas in the Kagoshima graben. Aso produced the largest confirmed eruption in the Kyushu region and at the same time used to be the most active among the calderas in Kyushu. But since its last caldera eruption is its largest, it might take much longer to produce another super eruption than the other calderas.
@@psalmerperena4120 Thanks for the detailed info.
00:40 “…southern most point of the main island”. Nope. Kyushu is not the main island.
FIRST!
Cute I’m in Tochigi so already have my banana chair and beer ready for the fireworks one night 😂
yikes
Not every super eruption affects earth temperatures.
If it occurs in a subaerial manner it will.
2nd 😑
Second
Did you just use MINDFUCK as an noun in this rather nerdy, academic video? Don't do that! I don't think your viewers quite fall into the demographic that you think they do. Find another term, though I see why you initially chose that one. 😉
Will people return to Jesus? Will they prove themselves wise?
That’s pretty close to the 26k cycle… wonder if the Suns behavior at the time (Suns Maximum) had any effect??