Marapi Volcano Update; A Lethal & Destructive Lahar was Generated
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- čas přidán 13. 06. 2024
- For the 2nd time in 6.5 months, a lethal disaster sadly occurred at the erupting Mount Marapi volcano. This occurred due to heavy rainfall, which washed quickly away downslope to the prior incineration of a patch of ground due to Marapi's December 3rd eruption. As a result, a lahar with an estimated height of 30 feet was generated which damaged dozens of structures. This video explains why this lahar was generated, and the danger that so-called "secondary lahars" can generate.
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[2] • BANJIR BANDANG (GALODO...
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Sources/Citations:
[1] PVMBG
[2] Brown, S.K., Jenkins, S.F., Sparks, R.S.J. et al. Volcanic fatalities database: analysis of volcanic threat with distance and victim classification. J Appl. Volcanol. 6, 15 (2017). doi.org/10.1186/s13617-017-00..., CC BY 4.0.
[3] VEIs, dates/years, composition, tephra layer name, DRE estimates, and bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger are sourced from the LaMEVE database (British Geological Survey © UKRI), www2.bgs.ac.uk/vogripa/view/c..., Used with Permission
[4] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231-1238, doi:10.1029/JC087iC02p01231. Accessed / Read by / geologyhub on Oct 5th, 2022.
0:00 A Destructive Lahar
0:47 Heavy Rainfall
3:23 Eruption Size
4:03 Secondary Lahars
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Be sure to check out the Explore West Sumatra channel, who granted me permission to use their drone footage in this video!
Channel link: www.youtube.com/@ExploreWestSumatra
Lahars are genuinely terrifying. Imagine drowning in a giant flood of volcanic mud and sludge
A person would probably die of blunt force trauma from all the rocks and boulders in the lahar before they'd drown in it.
I agree with the blunt force trauma idea. Same in Tsunamis. More people are killed by floating debris than by drowning. Cheers!
@@Benson_aka_devils_advocate_88 Yeah, like pyroclastic flows
I was too young to remember the lahars on Mt St. Helens (I was born in '79, and lived about 40 miles north of it.), but, having seen bothe the footage and the results and having head firsthand stories from oeoole that remember (obviously not peiple in the path of them)...
I literally cannot imagine anything more horrific to be trapped in. So sorry for those victims of this astounding and thankfully rare natural disaster.
I remember the one in Columbia in 1985. The most haunting part was the girl who passed because she trapped in debris and rescuers didn't have the means to get her out
You need 10x as many subscribers as you have. This is my go-to place for world volcanism news.
……read daily ‘volcanodiscovery’………
Your stunning statement at the end of this important video needs to be widely repeated: Between 1500 and 2017, lahars accounted for 26% of all volcano-related deaths. I had no idea. Shocking too was your description of how earlier volcanic eruptions leaving behind ash can set up much later sudden killer lahars. Tragic that the lahar early warning system wasn’t completed in time for this terrible event.
Mt Pinatubo is also famous for this. In 1995, during a typhoon, the town of Bacolor was buried in lahars made from ash deposited 4 years earlier.
Lahars are often a huge killer at various volcanoes. And why if Mt. Rainier was to erupt why I’d be rightfully panicking.
@@GeologyHub : have you made a previous video on the danger of of lahars from a future Mt Ranier eruption?
I read some news articles calling it a "cold lava" and made no use of the word lahar. Missed opportunity to teach their readers a new vocabulary word.
in my country its the opposite, they call lava hot lahar and lahar cold lahar.
From this disaster because of that reporting I learned the origin of the word lahar. The word comes from an Indonesian language (Javanese) and means lava or mudflow. When they report on lahars in Indonesian they usually write it as lahar dingin, which literally translates to cold lava. Even if you put it in google translate. So when the news gets translated to English from the original Indonesian reports in their local languages is why the word lahar disappears and instead we see cold lava used instead. A cool little fun fact to learn
ꦮ꧀ꦭꦲꦂ
Rip to everyone who passed away
I watch your videos every day to be updated on what is going on with the volcanoes of our world.
Sympathy to those who have lost relatives in this tragedy. I heard about this this AM and was waiting for this explanation. Again you've brought the human element into science. Thanks.
Thank you for covering this GH. Sad consequences.
4:36 I still remember the news of the Armero tragedy.
23,000 people died because they weren't warned/evacuated.
In New Zealand we are taught about the Tangiwai disaster. Lahars are no joke.
very sad/ my condolences to those affected
Thanks for all of your hard work man!
Am I right to be annoyed by the Daily mail referring to this as being a cold lava sweeping a village? It seems to be such a weird way to describe it....whats next from them, hot snow causes floods?
Annoyed - sounds about right. Yes, it was not hot lava flowing, but rainwater and volcanic ash. Perhaps the person describing this, had little understanding of specifics like laharrs or pyroplastic flows, and just described the occurrence as best understood.
It's probably a direct translation from lahar (lava) dingin (cold) which the term we use in Indonesia. Lahar dingin is what we call it.
Most viewers are low brow as hell and that terminology caters to them
Thanks for the continued updates and explanations. Greg.😊
Greatly appreciate your covering this ❤
Thank you for the fantastic images. 🌋🧡
Oh no... Thanks as always. RIP to those who passed away.
It's quite heartbreaking the timing and the deaths. The videos are nightmare fuel, given how this death-sludge flooded the town at night.
Thank you for the update.
Thank you for your video. So informative! There is a lot of scary stuff going on in the world. 😮
Thank you.
Thanks!
50mph is absolutely horrifying
RIP to all who were lost :(
My main magma man just wanted to let you know how much I appreciate your consistently consistent videos in my opinion you constantly keep it consistent and that consistently makes me want to constantly hit the like button.
LOVE you for this BRO man
🤘🏼🤓🤘🏼
very sad.
note:
not to be confused with Mount Merapi in Central Java.
Sad situation
I made sure my house was well above any Lahar prone areas aside one from a complete collapse of Mt Rainier.
Not a well-educated man on this topic, but much more so since discovering this channel.
Why is this a lahar and not a mudslide of volcanic material? Where is the line? What's the technical difference? Thank you?
I think it's just a naming convention.
A mudslide of volcanic ashes is called a lahar.
And besides, it's shorter to call it a "lahar" than calling it a "mudslide of volcanic ashes"
It's similar to "falling water droplets," which are called "rain"
👋🏻👴🏼
Definition: A lahar is a hot or cold mixture of water and rock fragments that flow quickly down the slopes of a volcano.
A lahar is a landslide but not all landslides are lahars. The key is the slide occurring on a volcano.
My guess is that volcanic mudslide sounds like volcanic materials that went down the volcano like an avalanche, while lahar is like flash flood but contains volcanic materials
Weather Channel called it "cold lava". I hate those sensational liars. Lahar lahar lahar!
Teach people by using the proper nomenclature.
ꦮ꧀ꦭꦲꦂ ꦮ꧀ꦭꦲꦂ ꦮ꧀ꦭꦲꦂ !
You would think the people who live in such an area would be well aware of the possibility of this happening. They already knew there was a pyroclastic flow, And when it started raining that heavily they should have known that there was going to be a very big problem very soon.
Have you ever talked about the lahars that killed the redwoods at Floresant Colorado?
And now the death toll has increased to 44 people.😢
I haven't heard anyone using decimeters for a long time. I bet some people don't even know what it is. lol.
I was in an eruption from Mount St. Helens when I was 18. Horrifying!
Are you Canadian? I ask because of the North American accent, but the use of Decimeters…….
He lives in Arizona, just uses metric units for science reasons.
Much as we would love to claim him as Cdn I am pretty sure he is in the US. Science tends to be in metric
It's makes sense to use metric units here and in science:
● Scientists of all over the world use metric units.
● The viewers of his videos come from all over the world, too.
● Generally, it's much easier to compute metric units. One kilometer equals 1000 meters. One meter equals 100 centimeters. So, one kilometer equals 100,000 centimeters.
If you try a similar computation with miles, feet, and inches (like one mile equals how many inches), it's much more difficult.
👋🏻👴🏼
The use of decimeters is unusual. I don't know why it's not more widely used. Y'all seem to be missing that point.
Extra footage
m.czcams.com/video/elZycIxYrmk/video.html
Yeah
How many barleycorns in a decimeter?
Many people(non science enthusiast)actually blame bmkg(weather and eartquake agentcy) isntead of PVMBG(volcano agency)
Even though bmkg only give bad weather warninh
Kecuali merapi (jawa tengah), pemerintah daerah lainnya kurang aware sama ancaman lahar dingin.
Apalagi kalau habis erupsi, hampir pasti bakal ada lahar dingin jadi kalau hujan dimonitor banget. Di merapi Jateng, setau saya ada volunteer, sirine, bahkan radio komunitas. Jadi kalau ada lahar dingin udah pada diperingatkan.
Mungkin karena merapi udah terlalu sering erupsi jadi warga lokalnya udah terlatih.
Dulu semeru juga makan korban, sekarang marapi sumatra.
@@sekar9901 iya,di gunung yg sering erupsi dan banjir udh bagus sistem peringatan dini ny
Did you know, There is a cafe name Cafe Xakapa which is been built on riverbank and destroyed by lahar.
why is Officer categorized as VEI 2? although it has reached the lowest limit of VEI 3
Why do all your videos have an “Altered or Synthetic Content” warning? I can’t seem to find any reason.
Honesty in the use of 3D generated images, I imagine.
I was just wondering the same thing. First time I’ve personally seen that and I even went to check the link to get some elaboration since It was so unusual to see on this channel. There was no explanation given upon viewing the given QR code.. Maybe it’s some automated thing from CZcamss algorithm bc he isn’t following the news cycle’s version of “cold lava bs”
@@MaidenFair yea I just noticed them too, and I’ve been watching this channel for a while. It’s very informative so know why CZcams is saying this would be nice lol.
Question @GeologyHub : Can magma be superheated and if so what happens when it is?
Is it not hot enough?
@@infinidominion I'm absolutely sure it is. All the same I wondered, if magma can be supercooled, can it be superheated and if so, at what temperature, and does the magma change state?
So the agency who gave the warning didn't know that the new system was not finished yet?? Something is not right. If this reporting is true, hopefully there's some accountability somehow, because if they had used the old methods, like, uh, the MEDIA (the new system seems to rely on phones...so... ) There was almost an hour to do the previous warning methods! How tragic. RIP all victims and sympathy to their families for their seemingly uneccesary deaths. More should have been done after last year, or the other times. 💔
Merapi
18 BBW’s died 😢😢
😩!
I don't know if classifying the storm as "unusually" heavy rainfall is fair. It is a rainforest.
5" rain in 3hrs isn't unusual where I live in the US (I think we're getting it now!), and we're not in a rain forest and don't have a monsoon to compare it to, although it's out of monsoon season there atm.
You dont need a lahar warming system if its raining 13 cm in 3 hours. Then you should warn already.
as I know Merapi is on Java, not Sumatra
Mount Merapi is indeed located in Java, but Mt.Marapi is on Sumatra Island. Both of these mountain have near identical name, only one letter that differentiate between them.
Ohh a hard rain is gonna fall.Bob Dylan song.
A hard rain is gonna fall. Bob Dylan song.
Those casualty silhouettes look like armed soldiers.
Breath and pause during commentary.
That's going to cool things down! 😅 Maybe it's because people can't control the weather and the solar flares and the whole world 🌎. Look! He's making all things new!!!!!!.
Awe poor rain made Jack a dull boy 🥲
ok but in all respect can we just stop going to or living around volcanoes?
not in indonesia.
Blame the government
Thanks !