The Potential Future 1,000 Foot High Megatsunami in Alaska; The Barry Arm Landslide

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  • Опубліковано 21 жов 2024

КОМЕНТАРІ • 91

  • @GeologyHub
    @GeologyHub  2 роки тому +85

    It is a bit worrying that you can see the landslide moving throughout the years on Google Earth. It is likely only a matter of time before part of or all of the affected area collapses, generating a large tsunami. Of course, this disaster may also occur decades from now, we simply do not know yet. In the video description I have linked a government website which gives frequent (semi-weekly?) updates on the status of the landslide.
    Also, there is a chance that no major collapse will occur and instead will involve a long term continuation of the slow landslide.

    • @whiteknightcat
      @whiteknightcat 2 роки тому +5

      Wow. You JUST uploaded this less than 10 minutes ago and already you're getting porn site scammers in the comments.

    • @markeithanyutuc565
      @markeithanyutuc565 2 роки тому +1

      @@whiteknightcat Huh?

    • @jasonworks1454
      @jasonworks1454 2 роки тому +1

      And who doesn't live in the effected areas, but owns all that insured industrial property that might be affected?

    • @whiteknightcat
      @whiteknightcat 2 роки тому +1

      @@markeithanyutuc565 Do you not see the comment below by "Jack Johnson" advertising a porn site? I reported it but I don't think YT removes spammers anymore. I was hoping this channel would remove it.

    • @adriennefloreen
      @adriennefloreen 2 роки тому

      I started watching this with my family and paused it so we could finish watching it later and still have it open in another tab. It's another UA-camr touring Whittier, Alaska a few weeks ago. I will send him your video too, I am not sure if you see the same suggested videos but in the suggested videos that come up to the right of his, it suggests a video of another UA-camr visiting there just before he did. Someone, make sure the people who live in Whittier see GeologyHub's video. ua-cam.com/video/bH-TlC0111Q/v-deo.html

  • @416dl
    @416dl 2 роки тому +2

    As a seasonal resident of Skagway in the upper Lynn Canal, the northern extension of North America's longest fjord, my thoughts often are pondering the likelihood of tsunami, and yes even megastunami as the steep glacially carved and isostatically rebounding mountain sides and deep waters of the fjord present an ideal landscape for just such an event and in fact even today the city is addressing a smaller but potentially devastating rock slide over its historic cliff side wharf. Of course that is only one of the potential natural disaster scenarios that we face; up above Skagway are numerous glacial fields some of which are suspect to contain sub-glacial lakes which can catastrophically be unleashed with equally devastating results. Thanks for keeping us aware and prepared. Cheers.

  • @dahliscrafter
    @dahliscrafter 2 роки тому +10

    As someone who lives in Alaska, I found your pronunciations of Tatitlek and Valdez entertaining. Locals pronounce it so differently so it always throws me off when I hear the names read as any normal person would read them… also, I live in the damage range of that potential tsunami, so… uh oh! Hope that waits until I decide to move away

  • @carbonstar9091
    @carbonstar9091 2 роки тому +29

    The thought of a 1700ft tall tsunami and that there were people there that somehow survived is mind-numbing.

    • @payperboii8477
      @payperboii8477 2 роки тому +1

      it reminds me of that movie the Maverick. He teaches his son how to hold his breath in case of getting stuck in the undertow of a big wave. but i can only imagine a 1700 ft tall wave haha xD

    • @Sgtassburgler
      @Sgtassburgler 2 роки тому

      @@payperboii8477 Yeah, you would instantly be killed by the pressure of being under 1700 feet of water.

    • @jaquigreenlees
      @jaquigreenlees 2 роки тому +1

      3 fishing boats with 2 people each on them, one boat and crew lost the others made it with broken anchor lines.
      the one that was lost was actually closest to the landslide itself, one was anchored halfway up the bay and one was near the entrance to the bay, the last 2 are the ones that survived. The real shocker is the middle boat, they were literally carried over an island in the bay by the wave.

  • @jamesgarman8601
    @jamesgarman8601 2 роки тому +39

    You need to include air displacement in your mega tsunami talks. As the landslide occurs, the speed of the falling rock causes a huge amount of air to be dragged down with it increasing the amount of water displacement.

    • @jasonworks1454
      @jasonworks1454 2 роки тому +4

      Damn. Could another Hunga Tunga shock wave get a shakey shakey splashy splashy feedback loop going? Tilt that plate and rinse it off?

  • @valeriebumblebee7607
    @valeriebumblebee7607 2 роки тому +8

    Happy Birthday, Tomer!

  • @randysmith6493
    @randysmith6493 2 роки тому +9

    I like this explanation of why these occurs in Prince William Sound bays. Thanks. I don’t imagine with the placement of these four communities will be impacted to greatly though as none face the origin of the event and are deeply settled to the back end of the bays they are in. The 1964 quake event had benthic areas of PWS and the Gulf in some cases raise or lower from 4-40’ over huge land regions under water. The volume of water displaced and their location to those bays of PWS was quite destructive. I have kayaked from Cordova to Valdez, Valdez to Whittier, Whittier to Chenega Glacier of PWS in different trips which is effectively the land boarder of the Sound itself. We did see some effects of land upheaval and sinking. Chenega village was devastated , 2 out of 3 people were lost. I lived in Anchorage at the time of the 64’ 9.2 quake, our home was fine, but just blocks away there was total destruction of homes and apartments and of downtown . I remember a comment from someone in congress suggesting that there is not much reason to send money to rebuild Anchorage, it was a total lost. But that is kind of how Alaska is often viewed from the continuous states at times 😊

    • @b.a.erlebacher1139
      @b.a.erlebacher1139 2 роки тому +1

      IIRC, one of the reasons for the extreme devastation of the esrthquake was that parts of Anchorage were built on a thixotropic clay that liquefied at the shock. Have these areas been avoided when the town was rebuilt?

    • @randysmith6493
      @randysmith6493 2 роки тому +1

      @@b.a.erlebacher1139
      To answer your question, not at all. It’s not from being stupid, I think $ money makes investors think I only have to hold this investment for awhile, then sell it for a profit. Plus people carry insurance. The Corps of Engineers stated long before 1964 that Turnagain area is not suitable for building homes upon. My best friends home was ripped in half while they ran out the front door. Today people still build on the now sunken areas of the Kinik shore along Anchorage with multi million dollars homes and lots for the view. Investors and representatives still try to get Anchorage to build along Ship Creek in that early old Anchorage townsite. The collapse hill of Anchorage Town along 3rd Avenue does have now some Hotels, 4th Avenue is all built back on. Not all of it horrible. The Anchorage Hilton today use to be called Westward Hotel, and it is 18-20 stories tall, and it was just across the street from the 3rd Avenue are collapse, and it did just fine. So it’s spotty I guess.

    • @b.a.erlebacher1139
      @b.a.erlebacher1139 2 роки тому +4

      @@randysmith6493 I suppose they figure that another massive earthquake is unlikely to happen any time soon. I wonder that they can get insurance -- it must be expensive. So it goes...
      Here in Toronto, Canada we had some disastrous floods in 1953 when the tail end of Hurricane Hazel stalled over the city. Toronto has some steep walled valleys, former glacial spillways, where all the destruction occurred. We had good government at the time, and all affected areas were put under a conservation authority and redeveloped as woodland, parks and playing fields. Residential and significant public buildings are prohibited. So now the city has a network of green space and recreation area that extends even in densely populated areas, and there's not much exposed to the risk of future hurricanes. I wish this sort of response to natural disaster was more common. I suspect if it happened here and now, the response would be different.

    • @SadisticSenpai61
      @SadisticSenpai61 2 роки тому

      Honestly, there's always senators and representatives trying to claim that other places aren't worth rebuilding or relief efforts when it isn't where they're from. While it tends to come the most from Republican politicians, there's definitely not a lack of return spite from various Democrats - esp when a disaster hits the home of said Republicans that tried to deny aid to Dem states. And unfortunately, there's a lot of ppl down here that view disasters as opportunities to make money. Just look what they did to Puerto Rico!
      It is pretty ridiculous that in an area as prone to earthquakes as Alaska has proven to be that the building codes and rules for what kinds of soil you can build on haven't been updated to meet with modern understanding of earthquakes and the geology of Alaska. Ofc with the permafrost melting, there's other building problems as well - including formerly solid ground no longer being quite as solid.

  • @redneck641
    @redneck641 2 роки тому +13

    I have an interesting topic which is currently giving Geophysicists in Mexico a headache. People in the country have always said that September is an Earthquake Month, they're always happening in different dates across the month. However, there's a specific date which has shown to be pretty prevalent for Earthquakes to occur which is September 19th. There was an 8.1 from the coast of Guerrero in 1985, a 7.1 near the state borders between Puebla and Morelos in 2017, and a 7.7 off the coast of Michoacan just recently on that specific date. I know its a coincidence but its incredible that there's been three different times that a quake has struck Mexico in that particular date.

    • @OpaSpielt
      @OpaSpielt 2 роки тому

      Had there been earthquakes on other days of the year too?
      How many earthquakes had there been in total that had not been on 19th of September?
      🖐👴

    • @redneck641
      @redneck641 2 роки тому +1

      Hi @@OpaSpielt
      We do have earthquakes on other times of the year. However, in the past few years we've been noticing that most noticeable earthquakes have been striking on September. The biggest ones I remember recently were an 8.2 on Sept 7th 2017 in the Gulf of Tehuantepec, Oax. right before the one on the 19th of the same year, the other one I recall was a 7.1 on (ironically enough) Sept 7th 2021 near Acapulco, Gro.
      The only other quakes I remember well outside of September, were on June 15th 1999 when a 7.1 struck near Tehuacan, Pue. and on February 16th 2018 when a 7.1 struck Western Oaxaca.
      Saludos!

    • @OpaSpielt
      @OpaSpielt 2 роки тому

      @@redneck641
      I wonder about the geophysical reasons for increased risk of earthquakes in September. If it would be an increased risk for earthquakes during, let's say, new moon, then I would expect the combined influence of the gravitational effects of sun and moon. Similar to why storm surges are higher during new moon.
      September is also the time of increased hurricane activity around Mexico, right? Is it possible that hurricane activity has an influence on the risk of earthquakes?
      🤔🤔🤔
      Have a nice day 🖐👴

  • @abefroman7393
    @abefroman7393 2 роки тому +5

    Such a high wave is hard to wrap my head around. This type of tsunami must have been common during the main recession of the glaciers. Great video!

  • @none941
    @none941 2 роки тому +27

    Tsunamis are very interesting, but I'd be interested in a discussion of the difference between confined space tsunamis in fjords versus open ocean tsunamis. How are the forces different and what are the results. The Norwegian film "The Wave" gives an idea of what it would be like if one of these landslides happened in an inhabited fjord like Gerainger. Terrifying!

    • @williebeamish5879
      @williebeamish5879 2 роки тому +3

      Great movie.

    • @Sgtassburgler
      @Sgtassburgler 2 роки тому +2

      Well the force is far more concentrated that is for sure, that is why you get 1700 foot tsunamis.

  • @leighhood8648
    @leighhood8648 2 роки тому +2

    I find your videos strangely comforting, captivating, and easy to understand.. I love your descriptions and tone of voice used. It's soothing.

  • @AtarahDerek
    @AtarahDerek 2 роки тому +18

    Valdez (pronounced val-DEEZ) moved up from the shore precisely because of the tsunami risk. It was hit by landslide tsunamis triggered by the Good Friday megaquake of 1964.

  • @baystated
    @baystated 2 роки тому +4

    Kudos for using "runup"

  • @dragonfly424
    @dragonfly424 2 роки тому

    I live in Cordova, this is something we always keep in the back of minds. Really love your content.

  • @anthonyloconte7835
    @anthonyloconte7835 2 роки тому +3

    I was stationed in the Coast Guard in Cordova for 2 years. I am gonna give you a bit of a challenge. If that entire mass fell into the Fjord. What would the maximum run-up be for each of those cities? Valdez is the termination of the Aleska Pipeline. Keep that in mind.

  • @ytmndman
    @ytmndman 2 роки тому +7

    I hope they have a camera constantly recording it so they can capture the wave when it happens.

    • @ytmndman
      @ytmndman 2 роки тому +1

      @Uthur Rytan Top of the hill above the landslide.

  • @SpaceLover-he9fj
    @SpaceLover-he9fj 2 роки тому +5

    This possible upcoming landslide and megatsunami is much more likely than the over-hyped La Palma megatsunami, which will occur in the much more distant future, when we are all gone. Is it posibble for you to explain the difference between a Tsunami’s actual height and Run-up height ?

  • @barbietrink4984
    @barbietrink4984 2 роки тому

    Wow I used to live in The Yukon and visited these areas many times. Such beautiful and unique townships.

  • @sixthsenseamelia4695
    @sixthsenseamelia4695 2 роки тому +8

    Whittier already got washed away by a tsunami. Who's brilliant idea is it to berth cruise ships there? A scenic holiday that might get more of an adventure than you bargained for.

    • @williebeamish5879
      @williebeamish5879 2 роки тому +1

      Well... cruise ships...

    • @AtarahDerek
      @AtarahDerek 2 роки тому

      Some people like to live dangerously. And apparently a good number of those people are Samoan.

  • @thomasneal9291
    @thomasneal9291 2 роки тому +19

    984 feet seems oddly specific.

    • @GeologyHub
      @GeologyHub  2 роки тому +32

      It is the translation to the imperial system from the 300 meter figure the linked scientific paper gave.

    • @b.a.erlebacher1139
      @b.a.erlebacher1139 2 роки тому +10

      These conversions can create spurious precision. I think it's best to keep the same number of significant digits, e.g. 300m is about 1000 feet. If the number were 299 or 301 meters, a three significant digit value for a conversion to feet would convey the same precision.

  • @Batmans_Pet_Goldfish
    @Batmans_Pet_Goldfish 2 роки тому +1

    As Ryan Hall says, don't be scared, be prepared!

  • @Kazuma232
    @Kazuma232 2 роки тому +3

    The Latoya bay where two survived and witnessed the mega tsunami scary

    • @MountainFisher
      @MountainFisher 2 роки тому +1

      A father and son in a boat. Father was a heck of a boat driver.

  • @williamlloyd3769
    @williamlloyd3769 2 роки тому +2

    Twenty minutes is very long to get work out and reach safely. Does state of Alaska have an automated warning system?

  • @youzerable
    @youzerable 2 роки тому +2

    Extreme surfers would like a little better prediction of just exactly when this is going to happen.

  • @bouteilledeau1463
    @bouteilledeau1463 2 роки тому +1

    Since you're an official geologist, then you surely have a phd of sort.
    What was the paper that got your phd? I'd love a video on it.

  • @CraigTalbert
    @CraigTalbert 2 роки тому

    This is a super important video. I wish I could do more to promote it.

  • @jpopelish
    @jpopelish 2 роки тому +2

    Is anyone working on a plan to trigger this slide, in a most favorable way (downstream edge, first?), and at the most favorable time (lowest tide of the year?)and with the best possible preparation by nearby populations?

    • @AtarahDerek
      @AtarahDerek 2 роки тому

      Whittier is where the cruise ships dock during the season, so I think their plan is to pray it never happens, or at least that it doesn't happen during cruise season.

  • @ecurewitz
    @ecurewitz 2 роки тому

    Is there any way to remove that loose rock so it won’t cause a large tsunami, or maybe break it up into several small ones that do little to no damage?

  • @omgahandlelol
    @omgahandlelol Рік тому

    Terrifyingly interesting

  • @1235HUcrew
    @1235HUcrew 2 роки тому +1

    Could I request a video on the Earthquake in Taiwan?

    • @suitt1
      @suitt1 2 роки тому

      He does volcanoes, but if you go to Dutchsinse, he does earthquakes

  • @yomogami4561
    @yomogami4561 2 роки тому

    isn't one of the canary islands splitting on a fault line and capable of this as well but in open ocean?

  • @thhseeking
    @thhseeking 2 роки тому

    Are "tsunami height" and "run up" not two different things? As in a run-up of 1,700ft being caused by a tsunami of much lower height but with the force of millions of tons of water behind it pushing it? A 1,700ft tsunami would surely keep flowing up and over the side of the facing valley.

  • @patrickc1964
    @patrickc1964 2 роки тому +1

    Why can't they do a controlled demolition of the area, similar to avalanches?

    • @jonathanellsworth21
      @jonathanellsworth21 2 роки тому

      Because that would trigger exactly what they’re trying to avoid in this case. It works for avalanches because they can do it before more snow falls, keeping it smaller. In this case all the rock is already there. Plus trying to get one part to slide without disrupting the whole thing would be like playing with a nuclear bomb. You might actually make it worse than it would be on its own with explosives if there’s some cracking around it that can’t be seen from the surface.

  • @philipgreenaway5631
    @philipgreenaway5631 Рік тому

    The Lituya Bay “tsunami” was a 1720ft splash and the tsunami that travelled through the bay I think came up to 50ft. That’s how there were survivors. A mega tsunami at the height you mentioned (1720ft) would need an asteroid to hit the ocean. Please be accurate.

  • @fromwesternustosouthern9363
    @fromwesternustosouthern9363 2 роки тому

    What’s going on with Home Reef?

  • @Nemmy25
    @Nemmy25 2 роки тому

    Video thumbnail says “megstsunami” instead of megatsunami. :)

  • @ladyofthemasque
    @ladyofthemasque 2 роки тому +3

    I think that the slide risks happening in the warmer months may be aided by ground temperatures rising, melting some of the Alaskan permafrost.

  • @JohnnyYTwestbrook
    @JohnnyYTwestbrook 2 роки тому +7

    Didn’t something like this happen in 1958?

    • @rh5563
      @rh5563 2 роки тому +2

      Yes

    • @GeologyHub
      @GeologyHub  2 роки тому +5

      Lituya Bay earthquake and tsunami, yes.

    • @randysmith6493
      @randysmith6493 2 роки тому +4

      Interesting eye witness reports from people on fishing boats of lituya Bay collapse . Upon hearing about the event one might be skeptical of the story if it weren’t for the bay still stripped of forest going up the mountain sides aligning the bay.

  • @anakerose
    @anakerose 2 роки тому +2

    Hopefully this doesn't happen while there's thousands in Whittier getting off and on the Princess cruise ships. There's only one way in and out of Whittier thru the tunnel. Also thinking of the residents of Whittier in their one residential building!

    • @adriennefloreen
      @adriennefloreen 2 роки тому

      Did you see this, a UA-camr went there a few weeks ago. They seem like really nice people. ua-cam.com/video/bH-TlC0111Q/v-deo.html

    • @AtarahDerek
      @AtarahDerek 2 роки тому

      I just watched a guy's tour of Whittier. It's a fascinating place, with a (proportionately) large Samoan population. I hope they never have to worry about a megatsunami.

  • @Timesend
    @Timesend 2 роки тому

    Imagine trying to sleep at night living in those places near by

  • @StephenGillie
    @StephenGillie 2 роки тому

    Meanwhile, Roland Emmerich prepares to make a new movie.

  • @tdw5933
    @tdw5933 2 роки тому

    Azores can do it in the Atlantic Ocean.

  • @tengonadacluewhatsgutsprec1419
    @tengonadacluewhatsgutsprec1419 2 роки тому

    Why not prevent a major slide from occuring? Surely it wouldn't be more costly a project than the human lives and rebuilding costs thatll be spent if we do nothing. I'm no engineer but it seems simple enough: retaining wall holds it together while workers remove majority of material. It would get very expensive yes but so is doing nothing...

    • @b.a.erlebacher1139
      @b.a.erlebacher1139 2 роки тому +2

      These are very steep, very high, very long mountainsides. Propping them up is infeasible. The only real mitigation possible is to subsidize people to move out of the danger areas before the slopes come down.

  • @beyerdr
    @beyerdr 2 роки тому

    I hate to be this guy....but it's pronounced "Val-deez". Went to HS there. Family still lives there. Pretty town, due in no small part to the events of 1964, Tsunami awareness is a big part of life there.

  • @susanyoung6579
    @susanyoung6579 2 роки тому

    Seems like the kind of thing you could train AI to watch for worldwide.

  • @Seat1AJoe
    @Seat1AJoe 2 роки тому

    Essentially yikes

  • @encompassthyeclipse7278
    @encompassthyeclipse7278 2 роки тому

    Considering Russia has a 100 megaton submarine bomb, I’d say this is possible anywhere not just Alaska

  • @DigitalDissident
    @DigitalDissident 2 роки тому

    Zis is ze crisis we need foa ze new world orda

    • @FarnhamJ07
      @FarnhamJ07 2 роки тому +1

      Well, have a nap, then fire ze missiles!