Buried by a 900 Foot Wall of Water; The Cape Verde Megatsunami

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  • เผยแพร่เมื่อ 21 ต.ค. 2024

ความคิดเห็น • 110

  • @GeologyHub
    @GeologyHub  2 ปีที่แล้ว +55

    While large scale volcanic collapses & tsunamis are relatively rare (occurring every few tens of thousands of years) smaller deadly events are a bit more common. Such as the Ritter island collapse in the 1880s or Oshima Oshima collapsing in the 1740s.

    • @bearjedi6976
      @bearjedi6976 2 ปีที่แล้ว +4

      I love
      Ur channel❤

    • @bmjfilms9912
      @bmjfilms9912 2 ปีที่แล้ว +5

      You need to do a video on Ritter island

    • @ifeelbetterabouthis.louis3
      @ifeelbetterabouthis.louis3 2 ปีที่แล้ว +3

      We know how nature's been turning rare phenomena into common occurrences, I will not utter out of my mouth, i can't believe this happened if it does happen.

    • @HulaViking
      @HulaViking 2 ปีที่แล้ว +3

      Coral Blocks on Island of Kaho‘olawe from landslide on Mauna Loa west flank is a similar sutuation.

    • @ifeelbetterabouthis.louis3
      @ifeelbetterabouthis.louis3 2 ปีที่แล้ว +2

      @@HulaViking oh boy

  • @Pedro_Barros
    @Pedro_Barros 2 ปีที่แล้ว +6

    Hello, I am from Cape Verde and I loved your videos. My grandfather used to tell me stories about that. Even tho it's actually impossible for this to be passed through generations, his version of this was "this kind of rock exists only in Fogo, so there is no way it got here if not by a tsunami or a HUGE eruption." That's how it passed at least in family.

  • @1234j
    @1234j 2 ปีที่แล้ว +24

    Very interesting. Thank you for such a consistently high content standard.

    • @vodkamandate
      @vodkamandate 2 ปีที่แล้ว +5

      he's found a format, and it truly is at a high standard

    • @scrappydoo7887
      @scrappydoo7887 2 ปีที่แล้ว +2

      It's great isn't it 👍 there aren't many channels that do short vids that are concise and easy to digest

  • @airtonalmeida7394
    @airtonalmeida7394 2 ปีที่แล้ว +8

    Helo from Cape Verde! I appreciate your contents!

  • @TheTwack
    @TheTwack 2 ปีที่แล้ว +35

    Hey, could you make a video about Devils Hole in Death Valley? Its a bit of an oddity in that earthquakes thousands of miles away can cause the water level in the hole to abruptly raise and fall.

    • @sophierobinson2738
      @sophierobinson2738 2 ปีที่แล้ว +3

      Saw a video, really cool.

    • @richardcarter9107
      @richardcarter9107 2 ปีที่แล้ว

      That sounds like an oddity for sure. I'd like to learn about it. I've watched a lot of the old TV show Death Valley Days that first aired in the early 1950's and each episode was based off of true stories. I love the old westerns. I wonder if they ever did an episode on Devil's Hole? It's one of the longest running TV series, and each season had probably 30 or more episodes, so there's a chance that they might have done an episode on it. The show was hosted by a guy who called himself the "Ole Ranger." Ronald Reagan hosted it for a while too. I'm sure there are so many stories about Death Valley.

  • @jameslawrence2553
    @jameslawrence2553 2 ปีที่แล้ว +5

    Great content..Appreciated!

  • @scrappydoo7887
    @scrappydoo7887 2 ปีที่แล้ว +1

    Im loving the set of tsunami/mega tsunami vids you have been doing 👍

  • @dugfriendly
    @dugfriendly 2 ปีที่แล้ว +3

    Having lived my life in the Pacific Northwest region of the USA, I've always found volcanoes interesting. Mt St Helens erupted when I was a teen and I remember grampa bringing bottles of ash back from his trucking runs to Eastern Washington.

  • @stephenrickstrew7237
    @stephenrickstrew7237 2 ปีที่แล้ว +5

    Thanks for another great Episode… ! I live in the Blue Ridge Mountains of Virginia an area that has a very interesting Geological History .. Some of the recent interglacial periods have left alpine valleys and flood scours .. Leaving quite spectacular scenery..how comparable are any interglacial floods here to others in history ..?

  • @weepingscorpion8739
    @weepingscorpion8739 2 ปีที่แล้ว +1

    Megatsunamis caused by huge landslides is something I find wildly fascinating. I'm Faroese, and our isles are not particularly active but we have evidence of a tsunami hitting when the Storegga slide occurred about 8000 years ago. I'm wondering if sometime in the future you will touch on the looming landslide in the Canaries (or Madeira?) which has been said to be able to produce a big enough tsunami to devastate not just Africa and SW Europe but also parts of the Americas. Some other interesting features on our planet to me are the various depressions and the question of whether these will eventually be filled in by the ocean, such include the Afar Depression and specifically Lake Assal, the Dead Sea and the Salton Sink. But those are topics of another video as they say. Keep up the good work.

  • @mrln247
    @mrln247 2 ปีที่แล้ว +16

    Intruding Magma may not only create ground deformation in one direction but also if it was to laterally follow layers representing previous flanks, could create a very low shear layer much like avalanches or landslides triggered but heavy rains although at much greater depth than either of those examples. Subsequent eruption would be very likely simply due to the pressure release of the landslide mass.

  • @minraja
    @minraja 2 ปีที่แล้ว +6

    If you haven't already I would also like to suggest to make a video on the unique volcano in Africa that erupts black lava called Ol Doinyo Lengai.

  • @swipe87
    @swipe87 2 ปีที่แล้ว +2

    Anak Krakatau is a very recent example (2018). The volcano and following landslide created a tsunami as well, albeit much smaller. There are visible landslide scars where the volcano once stood.

  • @conniewilliams2256
    @conniewilliams2256 2 ปีที่แล้ว +7

    Call me paranoid, but the big island in the Canary Islands, scares me.
    This appears to be happening on the western flank. There's a huge crack across the island, several feet wide, indicating where the break of catastrophe will occur.

    • @Dragrath1
      @Dragrath1 2 ปีที่แล้ว +6

      It will in all likelihood happen eventually but from what I can tell barring of course volcanic exacerbation of underlying stresses there is currently no reason to think it will happen in the next few millennium . Importantly the slide when it does occur may very well occur piecewise over thousands of years rather than in a single event which would limit the tsunami potential. La Palma and its fellow Canary islands are in terms of volcanic islands fairly old with a very long history of sustained volcanic activity in the region as opposed to an age based progression(i.e. unlike the Hawaiian islands all the islands remain volcanically active) so while La Palma is the youngest of these islands "only" being 4-2 million years old in the grand scheme of things the timescale of humanity is a blip in the island complex. The odds of us being around when one of these slides finally does occur (i.e. in the next century or less) is pretty slim though not nonzero.
      If you are going to worry about Tsunami's in the Atlantic the biggest threat is by far the Azores-Gibraltar fracture zone as this fault complex has produced a number of powerful Earthquakes and associated Tsunami's. Thus far it has produced a number of ~8+ magnitude Earthquakes and associated landslides as the crust to the south is under transtension(transverse or side to side motion + compression and secondary thrustmotion) being pulled underneath the crust to the north these Earthquakes have generally repeatedly resulted in large submarine landslides and potentially even Megathrust events or an early tectonic precursor. To date these events have occurred irregularly with the largest event the great 1755 quake in Lisbon and its associated powerful transatlantic tsunami, having been followed by quakes and associated Tsunami's in, 1761, 1816, 1941, 1969, & 1975 respectively. This history as well as its gradual propagation from Gibraltar to the Azores indicates that there will no doubt be more powerful quakes in the future and thus tsunami's, or as they say it isn't a matter of *if* its a matter of *when*.

    • @bigrooster6893
      @bigrooster6893 2 ปีที่แล้ว +3

      I’m not really worried because a landslide can’t cause a ocean wide mega tsunami only a regional tsunami. Landslides don’t produce enough force only mega earthquakes produce enough force to cause a ocean wide mega tsunami.

    • @SpaceLover-he9fj
      @SpaceLover-he9fj 2 ปีที่แล้ว +1

      Theere’s curently no significant sign that La Palma will collapse. The lava created by last year’s eruption may have even stabilized the island !

    • @VictorMyMaster
      @VictorMyMaster 2 ปีที่แล้ว +1

      I'm from Tenerife, the biggest one and where is the Teide, the third biggest vulcano on Earth after Mauna Loa y Mauna Kea from Hawai. Coronavirus and politicians are worse than landslides, believe me 🤣

  • @fangugel3812
    @fangugel3812 2 ปีที่แล้ว +3

    That was fascinating.

  • @rickkearn7100
    @rickkearn7100 2 ปีที่แล้ว +5

    It's hard to imagine the forces that would deposit ~20ft diameter boulders that far up on the plateau. The layman (me) simply does not possess a frame of reference scientifically-based, that would explain the mechanics involved hence making it difficult to wrap one's brain around this occurrence. Fortunately, there is the GH perspective, which gives one a fighting chance at comprehending the forces involved. Cheers.

  • @zapszapper9105
    @zapszapper9105 2 ปีที่แล้ว +2

    That's a seriously big wave. Does the south east corner of the north island of New Zealand have the potential to cause a mega tsunami with a land slide?

  • @michaelbart7014
    @michaelbart7014 2 ปีที่แล้ว +1

    I thought they did a study on the chemistry and composition of island volcanoes magma, lava and rocks and they showed that it is unusually weak and erodes quicker in the presence of water, which has been attributed to the collapse of most of Hawaii's major islands.
    Been really loving your videos, learned about a lot of volcanic and geologic activity I wasnt previously aware of, or not super knowledgeable about :)

  • @clarenceghammjr1326
    @clarenceghammjr1326 2 ปีที่แล้ว +2

    Some thoughts on reykjane ridge quakes?

  • @tengonadacluewhatsgutsprec1419
    @tengonadacluewhatsgutsprec1419 2 ปีที่แล้ว +3

    A video on the Hilina slump please

  • @jorgesuspenso5105
    @jorgesuspenso5105 2 ปีที่แล้ว +6

    Very interesting video!! By the way, i would like you talk one day about the Paraná y Etendeka Traps during the separation of South America from África. It seems to that place was the scenario of the bigges't explossive supereruptions on the planet

  • @The_Dudester
    @The_Dudester 2 ปีที่แล้ว +1

    There has been a swarm of quakes on the Rejkanes ridge. Is this tectonic or magmatic?

  • @dc7370
    @dc7370 2 ปีที่แล้ว

    Outstanding as usual

  • @anwalborn
    @anwalborn 2 ปีที่แล้ว +1

    I have one question. How can we distinguish if one of these features is a collapse scar or a caldera?

  • @leafarlopes7502
    @leafarlopes7502 2 ปีที่แล้ว

    Very happy for such a curiosity about my country ❤

  • @beverlyreiner-baillargeon6205
    @beverlyreiner-baillargeon6205 2 ปีที่แล้ว

    You always have very interesting and very fantastic video's

  • @scottchatwin4440
    @scottchatwin4440 ปีที่แล้ว

    Thank y for all the great work you put into these briefings. can you tell me how the white cliffs of Dover were created?

  • @djelannyrodrigues2824
    @djelannyrodrigues2824 2 ปีที่แล้ว

    thanks for talking about my country 😊 and as geographer i can say that you have some good points here, but we have some underwater volcanoes that interferes too

  • @wulfgreyhame6857
    @wulfgreyhame6857 2 ปีที่แล้ว +3

    Similar "erratics" occur along the New South Wales coast, notably in the Illawarra region south of Sydney. These are thought to be the result of submarine sea-mount collapses out in the Pacific. Vegetation beneath some of the boulders has yielded C14 dates of only a few thousand years, and there is circumstantial evidence of much more recent events, perhaps a few centuries.

  • @BJETNT
    @BJETNT 2 ปีที่แล้ว +2

    This is very interesting! I used to live in Hawaii! The back half of the big island is about to slide off at any time now!! I am safe in ldaho now at least I hope!

  • @EpicAdventureCouple
    @EpicAdventureCouple 2 ปีที่แล้ว

    We just got back from the LIVE volcano in Iceland from an August trip.
    Live LAVA spilling out. Take a look and thanks 🙏

  • @rodofiron100
    @rodofiron100 2 ปีที่แล้ว +1

    could you do a top ten list of what YOU think are the most dangerous volcanoes on the planet and why?

    • @antondichtl6557
      @antondichtl6557 2 ปีที่แล้ว +1

      GH did it several times already. I don´t remember the title of the videos. He calculated "dangerous" by several factors: Probability, magnitude, proximity to settlements. His number one was Taal, and Vesuvius, Aetna and Campi Flegrei in the top ten. I´m not sure about the others.

  • @Ashleylovely9
    @Ashleylovely9 2 ปีที่แล้ว

    I am from Cape verde from the island of Brava, 20 mins from Fogo on boat.

  • @Sybil_Detard
    @Sybil_Detard 2 ปีที่แล้ว

    Very interresting. Thanks.

  • @biblebasher9364
    @biblebasher9364 2 ปีที่แล้ว

    What is brewing in the Atlantic at the Raykjanes Ridge?

  • @genehasenbuhler2594
    @genehasenbuhler2594 2 ปีที่แล้ว

    This was a topic on Randall Carlsons podcast this month!

  • @mirandasemedo9111
    @mirandasemedo9111 2 ปีที่แล้ว

    Well now I miss my island, need to go back visit, I went to the top of the fogo vulcano twice, crioulo 🇨🇻

  • @TheValarClan
    @TheValarClan ปีที่แล้ว

    there is much discussion about a possible large tsunami that went over the northern part of Africa. You can see evidence in the satellite imagery going from west southwest to the east north east over well pretty much everywhere. Although the direction it went one direction or the other I’m not sure at the moment, basically forgot. But it would be interesting to see a video on what could have caused it

  • @1Meter
    @1Meter 2 ปีที่แล้ว

    How does the tsunami carry the boulders? Do they roll along the sea bed or do they actually float in the wave? Asking for a friend

    • @key5270
      @key5270 2 ปีที่แล้ว

      Hello, if the wave has a strong fluid force (drag + lift) to overcome gravity and frictional forces affecting the boulders, it is possible that it can carry the boulders along with it. If you want to know more, you can search about Particle Entrainment by Currents. Hope this helps!

  • @ZebaKnight
    @ZebaKnight 2 ปีที่แล้ว +2

    Have you covered the possibility of a collapse at La Palma (in the Canary Islands) along the fault line that runs roughly north/south? I believe the current assessment of most geologists that a collapse is unlikely, but I'd like to know why they have reached that conclusion. A collapse of that magnitude would likely trigger a tsunami that would wash millions of people including me away - I live on the northeastern coast of the US!

    • @jaquigreenlees
      @jaquigreenlees 2 ปีที่แล้ว +2

      The recent eruption on La Palma gave a lot of seismic data along that fault allowing a clear picture of the structure. With no slippage from the eruption and good data about the fault construction the scientists studying it concluded it isn't likely to collapse any time soon.

    • @ZebaKnight
      @ZebaKnight 2 ปีที่แล้ว

      @@jaquigreenlees That's good news! Thank you.

  • @jackmcandle6955
    @jackmcandle6955 2 ปีที่แล้ว

    I read a report years ago where such a landslide on one of the islands could send a massive tsunamito the east coast of N. America ? I guess it was a miscalculation

  • @montylc2001
    @montylc2001 2 ปีที่แล้ว

    FAscinating and informative, as usual. Makes me wonder if Mar's Olympus Mons would be smaller due to landslides if Mars gravity was 1 gee Earth standard.

  • @christianbuczko1481
    @christianbuczko1481 2 ปีที่แล้ว

    And yet people still insist its impossible... you forgot the recent landslide in the med ftom mt etna as well, that wasted the shores of isreal amongst other things several thousand years ago. Im curious how big that one got.

  • @satanofficial3902
    @satanofficial3902 2 ปีที่แล้ว

    "Cowabunga! Surf's up! Grab your boards!"
    ---Albert Einstein

  • @pc_frederico
    @pc_frederico 2 ปีที่แล้ว

    Hi from Cabo Verde🇨🇻
    oi di Kabu Verdi

  • @superfreakmorris4251
    @superfreakmorris4251 2 ปีที่แล้ว

    Holly cr*P that so scary. Especially the fact that I live on Youngs Bay in Astoria Oregon

  • @jaysilverheals4445
    @jaysilverheals4445 2 ปีที่แล้ว

    on the columbia river at cascade locks and "bridge of the gods" one of the most massive landslides occured 1200 ad when the north face of the mountains collapsed and dammed the columbia river creating a lake and land bridge that indians could walk across. it gradually breached and today its washed away. its called Bonnevile landslide.

    • @jaysilverheals4445
      @jaysilverheals4445 2 ปีที่แล้ว

      when Lewis and Clark came through they noted some kind of massive landslide since stumps of trees were visible

  • @SpaceLover-he9fj
    @SpaceLover-he9fj 2 ปีที่แล้ว +1

    If this were to happen today, the effects would be unthinkable.

  • @MadSceintist
    @MadSceintist 2 ปีที่แล้ว

    I'd like your take on the city of Atlantis and it's catalistic ending in fire and brimstone. My thought is it was already built on a former volcano but what if it were next to an underwater volcano that was not terribly far off?

  • @scottowens1535
    @scottowens1535 2 ปีที่แล้ว

    It's a interesting thing that under certain pressure friction/stiction and gravity Has created most of what we see, just ever evolving and quite nice.
    We're just in the way of excellent.

  • @BlueButtonFly
    @BlueButtonFly 2 ปีที่แล้ว

    How do we know it was a collapse and not something more energetic like an explosion?

  • @jimmyjames2022
    @jimmyjames2022 2 ปีที่แล้ว

    I read one source that counted 17 giant sub aqueous landslides off the current Hawaiian Island chain. Seems like Kamaʻehuakanaloa (Loihi) is the only thing holding up Hilina.

  • @pukulu
    @pukulu 2 ปีที่แล้ว

    Geologist Bill McGuire has written on similar topics.

  • @FryskFS
    @FryskFS 2 ปีที่แล้ว

    Just a question; could you shine a light on the ongoing seismic swarm on the Reijkjanes Ridge? It's now the third day in a row that there are quakes of 4.5 up to 5.6 every hour, sometimes four in a hour. Could there be a magnetic signature too?
    I ask this because lots of mapmakers in the sixteenth century showed an island on that place .....

  • @marksharman8029
    @marksharman8029 2 ปีที่แล้ว

    Interesting. Creepy voice though ... the cadence.

  • @mmiljour
    @mmiljour 2 ปีที่แล้ว

    A+ 🙏

  • @idrisvaldez5365
    @idrisvaldez5365 2 ปีที่แล้ว

    damn this is my country

  • @michaeldeleted
    @michaeldeleted 2 ปีที่แล้ว

    Geeze man, you always build up to a major cataclysm and then leave me hanging. What I want to know is what happened after.

  • @adriennefloreen
    @adriennefloreen 2 ปีที่แล้ว

    You are right about the single axis thing, but dang, I think that the rarity of these events leads a lot of scientists and the media to lull the population into a false sense of security, phrases like "it only happens every 50,000 years so don't worry" are dangerous when people do not prepare because they don't realize that means it could happen at any second from now to 50,000 years later, and interpret that as "not in my lifetime - out of mind." Thank you for covering the sheer number of islands with these collapse scars, I have been concerned about that since before you made your TH-cam channel because after visiting several volcanoes 15-20 years ago including ones with similar scars I looked on Google Earth and noticed that all inhabited volcanic islands were like that, many with cities in the former devastated areas, and it scared me, it's like humanity set up thousands of cities that could be future Pompeiis and this has always bothered me. I like how you tell people about the future hazards, some people do not intuitively understand things like "the volcano is miles away, yet the volcanic magma chamber is underneath you and a masr could form here at any time" but I recently saw another video made in the last month of another person getting scalded by "hot Earth" miles from a volcano. People, drop out of college and watch TH-cam. You will learn more, and not end up in debt.

  • @jwsanders1214
    @jwsanders1214 2 ปีที่แล้ว

    If you think 7300 I think 730

  • @herrunbekannt7556
    @herrunbekannt7556 2 ปีที่แล้ว

    Megatsunami? I guess you never heard about the guy named Sisyphos... 🤔
    😆
    When you see some islands the signs of massive landslides are so apparently. But most of the people dont recognize them.
    Ok, these events are very rare in a normal human lifetime.

  • @marswrld2489
    @marswrld2489 2 ปีที่แล้ว

    Who else thought this was a Skyrim map at first

  • @rocketssss6
    @rocketssss6 2 ปีที่แล้ว

    All this and I am suppose to believe that cow farts are going to end the world? Mkayyy.

  • @ffxbellini
    @ffxbellini 2 ปีที่แล้ว

    If only your voice didn’t have a sappy sing-songs tone.

  • @valentinsantiago277
    @valentinsantiago277 2 ปีที่แล้ว

    Evidence!

  • @Earthneedsado-over177
    @Earthneedsado-over177 2 ปีที่แล้ว

    Fascinating and logical.

  • @creforce
    @creforce 2 ปีที่แล้ว

    you know your a nerd when you know everything his about the say before he says it.
    vulcanoes are purely my hobby life.
    Geology is very interesting am not gonna lie

  • @markfromtinder9616
    @markfromtinder9616 ปีที่แล้ว

    someone send this video to Ben Davidson

  • @joaoevangelistaribeiro3206
    @joaoevangelistaribeiro3206 2 ปีที่แล้ว

    Nesse idioma não dar pra entender nada não KKK.

  • @ogogogogog1741
    @ogogogogog1741 2 ปีที่แล้ว +1

    👁👁🌏〰️Google Earth...all day everyday....Volcano's and earthquakes change EVERYTHING...you'll see more soon The Earth is changing daily

  • @thenextpoetician6328
    @thenextpoetician6328 2 ปีที่แล้ว

    This is an electric universe. Geological features are fundamentally the result of electrical events. Andy Hall has several presentations on the Thunderbolts channel explaining in significant detail how many geological formations resulted from catastrophic plasma discharges and hyper-sonic winds sculpting this planet.
    I'm fond of pointing out that a band of electrical scarring runs from China to the Atlantic. What formed the Gobi desert made the Himalayas what they are today, and poured a vast amount of debris onto what are now Afghanistan and Pakistan. The greenest green Sahara was 6,000 YBP. Pretty sure the same event made it desert land, and also excavated a huge amount of out of the middle of the Black Sea. So much of what I learned in school was wrong I don't even think about it anymore.

  • @akashaggy505
    @akashaggy505 2 ปีที่แล้ว +2

    Nice try, buy the water didn't put them their lol, the volcano did 🤣 😆, the volcano made the land ?

  • @JesseMartinez-cm7tl
    @JesseMartinez-cm7tl 2 ปีที่แล้ว

    I thought it was gonna be some sweet cgi.