The area of this massive landslide was (relatively) recently explored further to determine if there was any risk of a new gas field (to be captured) generating another slide. For many years, it was thought by some that catastrophic expansion of methane clathrate generated the slide. This was later disproven however with more recent evidence. I agree with the found results that developing a new gas field in the area will NOT trigger another slide.
@@candicezinnick3449 Twas meant in jest. BTW you mistakenly wrote "their" instead of "they're". I think there's some internet law about correcting grammar online. The correction always contains a misteak.😀
@@candicezinnick3449 Wow, pretty picky! I'm into correct grammar as well, but this hardly qualifies as a major error. Not like confusing something as serious as "they're" and "their"! 🤣🤣
In The smith museum in Stirling you can find whale bones from this tsunami. Blue whales up to 100 feet in length were brought inland by the tsunami and dumped around Stirling. There were flint tools discovered among the bones.
I've been in the North Sea and crossed the Arctic Circle. Trust a sailor on this: compared to the normal everyday weather in the North Sea, the one in a zillion chance of another Storegga Slide should be the absolute last of your worries. Beaufort 10+ storms blowing up out of a clear sky in a matter of hours. 50 foot seas. A Nimitz class aircraft carrier's flight deck is about 80 feet from the waterline; we had rogue waves washing over it. Scariest sea conditions I've ever seen.
I can't imagine what that would be like to experience. I can only hope it's not as bad as watching a movie in a 4d full experience cinema without knowing what that involves..
That was very informative. I wish he would have talked about the huge flood cataracts that formed from the North Sea overwash that permanently opened the English Channel. They are still present under water and are proof the tsunami flood that took place was truly cataclysmic in size. It’s worth a video all on its own!
There was a big slide that opened NYC harbor too. It was something about a glacial collapse. The water rushed down the Hudson River and blew out the landmass between present day Staten Island and Brooklyn. (There was an exhibit on this in the Corps of Engineers section of Fed Plaza in NYC.)
It's astounding to think that an event like this, that would happen in a relatively short time, could have wiped out an entire culture, it's people and it's memory such that we will never know they were here at all.
Yeah…something similar happen to the indigenous people of north America on the upper west coast I believe…the earth is mighty powerful and with climate change we have awaken a sleeping tiger 🐅🤨
@@waris4thewealthy549 indeed we did experience a tsunami in this area! In 1700 the Cascadia subduction zone ripped open, again, and inundated huge areas of the coast. We know the date and time because it went all the way to Japan, and they recorded it as an orphan tsunami. Different geological setting, similar outcome.
@@emeraldperinatalfullcircle Yeahhhh that’s it! Ha..old ticker of a brain still got a few gears winding, I just couldn’t think of the geographic area by name..thanks for confirmation…😁🤣
@@m8kingArt True…technology can’t save us from Mother Earth…Humanity gravest mistake was allowing corporations to fill in the gaps for just basic survival on the land 🤨
I was aware of this when they aired a documentary about the historic Bristol Channel floods of 1607 in south west England. The documentary explored a theory that the great flood which swept up the Bristol Channel and devastated the low lying counties of Somerset, Gloucestershire and South Wales killing an estimated 2,000 people, was caused by a tsunami, triggered by an ancient fault line off the Irish coast. It stemmed from comparisons to a storm surge in 1981 in the same area and how in the 1607 flood the water was much higher than 1981, that rocks near cliff edges in the estuary were dramatically pointing away from the sea, and particularly the description in a journal/pamphlet at the time that the flood had the appearance of arrows being shot forth from the oncoming water (which the scientists in the documentary compared to the Papua New Guinea tsunami in 1998 in which the waves looked like they were sparkling i.e. like arrows being fired. It’s more recently been proven that the 1607 flood was more likely a massive storm surge, due to known tide heights that day, the likely weather, the extent of the flooding, and the fact that other coastal regions of the UK were flooded. The British Isles (the islands of Great Britain and Ireland) are blessed to sit on a fairly safe geological area, but we must remember our past to know that destructive events have occurred and could happen again. We also have a fair share of earthquakes, often triggered by faults in ancient rocks that underpin whole counties, or strike slip faults many kilometres under the ground, as was the case in 2008 in the county of Lincolnshire in the East Midlands, when the little town of Market Rasen was hit by a 5.2 (Richter scale) quake with a duration of 10 seconds. I live in the East Midlands, about 60 miles from Market Rasen in the county of Staffordshire, and I remember my cousin telling me that his bearded dragon was freaking out before the shock of the quake hit us, although by the time the shock reached us it was very diminished but people in my town could feel it.
That 5.2 scared the shit out of me, every pipe in my home rattled badly for over 30secs, and it sounded like a line of battle tanks were thundering past as well. I was in nottingham btw.
As a layman and subscriber to this channel, I think it would be of great interest to see a GH presentation of all the known potential submarine large landslide sites and the geology community's current assessment of the risk levels they pose. Cheers.
Thanks for covering the Storegga Slide and Tsunami. I think I asked for this sometime in the last 12 months. I find it fascinating that Britain was inundated in this way. It cannot have done Doggerland much good either.
i recalled the first time i saw the sea floor map of the english channel and the surrounding areas. i thought that it looked like a huge underwater landslide/tsunami combo carved out the area at one point. i was glad to hear that science worked in favor of that hypothesis.
Awesome topic. Massive amount of research on your part. Furthermore your graphics simplify a complex topic and make it understandable for non-geologist. Thank you!!!!
A followup video on Doggerland (why it was sinking before this happened) and how the Storegga Slide impacted it would be very helpful. Are there other big tsunamis that were that big in geologically recent times? How did the Christmas tsunami in Sumatra 2004 compare? I’m waiting for your definitive video on the 9.0 Cascadia Subduction Zone earthquakes/tsunamis with the warning for us in OR, WA, BC and N CA that’s due to hit any day.
The sinking of doggerland was primarily driven by isostatic rebound, as the areas that had been under the ice sheets lifted due to the tremedous weight of the sheets being removed. Around the periphery there would have been sinking as the land sought to reestablish equilibrium
A Lot of land disapeard below the sea in the period where the massive glaciers in europe and north america melted. the sea lvl did increase up to 125 meters, areas where there was the most ice acctualy dident end up loosing large amount of land to the sea lvl increasing because of the massive weight of ice sheets up to 3km thick and the old coast line from 12k years ago etc apears 10s of meters some places i think up to a 100 meters above todays sea lvl this is also the reason why norway gets hit by tiny earthquake all the time (only a few you would be able to acctualy feel) source for sea rising: NGU (Norges geologiske undersøkelse) translation to english: (Norways geolocial enquiery) atleast i think thats how to translate it, im not entierly sure. with the ice melting the land below will also now start to slowely rise this proses will last for thousands of year afther all the ice is gone to. the coast we have today would be gone, but antartica would acctualy grow larger. but it wouldent be able to make up for the loss of land area we would suffer not to get to talk about the economical impacts if there starts forming massive lakes of melted water containing millions of cubic meters of water behind ice walls or walls made by dirt stone and gravle (there is belived to have been some lakes like this beeing made in north america that increased the water lvl realy fast when the walls stopping the water from going into the sea collapsed from the pressure etc leading to a sharp increase possible of a meter or two quickly, quickly here beeing in a year or two maybe more maybe less.) any event like that would lead to massive economical problems
Makes you wonder the many different ways of how history would play out if Britain remained a peninsula and Dogger land remained. One example is the trilogy: Stone Spring Bronze Summer Iron Winter.
My home country of the Faroe Islands is geologically very inactive these days so it's nice that they get a mention whenever they do appear in bigger events that have taken place. So thanks for the shout-out. :)
Very informative. Alongside your volcano series, geologic oddity series, and impact crater series, could you perhaps do a major earthquake series? Discussing major historical and prehistoric earthquakes.
While its difficult to do archeology under water, there has been some attention given to Doggerland recently and what it would have been like to have a big island in the North Sea. If there had been an island at the time of the tsunami, the people would have had no place to go but their boats.
It's thought that Doggerland may have been the most densely populated part of Britain at the time as it would have had a mild climate and lush flora providing habitat for many animals.
There’s an exhibition called The Treasures of Doggerland at the natural history museum in Leeuwarden. I haven’t seen it yet because I had Covid, but I intend to go next week. It closes September 4th.
@@kellydalstok8900 Its probably the same one we had in Leiden, but moved to Leeuwarden? If so its highly recommended! I had no idea we had all kinds of apex predators here like lions, tigers, etc.
From the sumbarine topography, it seems the Storegga slide was preceded by at least one other slide to the southwest, outside of the red border and further south of the subsequent smaller slides. The shelf border in this area follows a similar circular trend but is less sharp. It seems that sediment platforms might be propense tothese kind of slides.
Love your work GH. The post glacial innundation of the North Sea and the creation of the English Channel is fascinating, would love to see more. Also curious about the Laacher See :).
Easy. ocean sediments and critters left in the soil where the wave reached and then left behind as the water rolled back. The dirt layer would be * humm why are there fish and sea shells here 80 miles distant from the shore?* and thus finger pointing to a rather hefty water displacement. The harder part is dating then figuring where said wave came from and triggered.
@@pakeshde7518 The dating can be determined by carbon dating wood, and other organic materials above, and below the tsunami deposits. The above organics will give a newest date, and the below organics an earliest date. Ergo the tsunami occurred before one date, but after the other date. If the carbon dating ranges over lap is will narrow it down dramatically.
The wave heights in Shetland were amplified by the landscape around the coastline. The relatively narrow channels between the islands and the sea lochs (known as voes in Shetland) concentrated the waves. There are several sites around the coast where the sand and debris washed up by the tsunamis can be seen in the layers of peat.
Not many years ago ( I live near the coast - actually in a fjord - in from where this happened ) there was an around 3.5 magnitude earthquake out in the ocean near Storegga ( meaning " big edge" ). I was in contact with one of the seismic networks in Norway ( near Oslo ). To my surprise I met an englishman, Germans or other are far more common, Norwegians have been ousted it seems. I asked if this earthquake could be related to the Storegga slide ? To my big surprise he had no idea what I was talking about, he didn't know a thing about it, never heard of it !! So I had to explain to him what it was all about , sediments from the tsunami in Scotland etc, etc. How is it possible that a British seismologist working in Norway wouldn't know about it ? Not more than about five years ago this ...
Thank you for this summary. I knew about the slide but not many of the details you provided in particular the huge width of the slide. Underwater slides or slides that displace large amounts of water such as from volcanic rock are fascinating to me as it shows the incredible forces involved in this type of incident. What is left on the seafloor, giant boulders weighing many 100's of tons are witness to the catastrophe this must have caused.
This made me think that the latent memory of this event would have been the origin of the flood myth. Just imagine the survivors migrating and spreading the word of such an apocalyptic event. Over time the story could have reached the near east and be incorporared as a myth...
The connection to the abandonment of Scara Brae seems unlikely as several small personal items were found dat the site. A tsunami would have carried them away.
Thanks for another very interesting post. But you have got the land bridge a bit wrong - the one you show was breached around 450,000BCE! It is confusing because there were two different land bridges at different times. The original one, across what is now the Dover Straits, was a continuation of the North Downs, a ridge of Chalk maybe 150-200m high with a gentle north side (the geological dipslope of the Chalk) and a steep south side over the earlier (and much softer) clays of the Weald. To the north of that, the Thames and Rhine drained into the North Sea. But during the Anglian Glaciation the North Sea basin was largely filled with ground-fast ice from the Scandinavian icecap. To the south of the ice, the Thames and Rhine continued to flow (at least in summer) so a proglacial lake built up between the Essex and the Low Countries, until it overtopped the Chalk ridge and formed a huge waterfall - since wet Chalk apparently has very little mechanical strength and the clay below was soft, the water may have cut through like a hot knife through butter, excavating a gorge through the whole ridge perhaps in only a few weeks. From then on, there was a marine channel at least during interglacial high sea levels, steadily widening by erosion to form the Straits of Dover. However during the last glaciation if not before, a low but wide ridge of high ground (Doggerland) formed across the southern North Sea. By c 7000BCE this was reduced to a strip of land running roughly from north Norfolk to NW Germany (the Wikipedia article on Doggerland does not show the latest reconstruction), inhabited by Mesolithic fishers/hunters/gatherers. The impact of the tsunami on this land must have been devastating, though it seems unlikely that the tsunami flooded all the way across (even tsunami waves have a finite wavelength, and once the crest has passed the water level subsides though there may of course be a second wave, or more). And it would hardly have washed away a wide expanse of low-relief well vegetated land, though if it funnelled into a particularly low and narrow point it could possibly have scoured out a breach. So it is generally thought that the land bridge survived for a few hundred years after the tsunami, before it was submerged by the continuing post-glacial rise in sea level. But the tsunami was still devastating for the Mesolithic communities of the land bridge and the east coast of England and Scotland further north,. Of course the science may change again with further research, but my impression is that it's getting fairly secure by now.
I don't think so, because tsunamis are a short living disaster. After several hours at least, the sea level is back to what it had been before. An example: the island of Ko Phiphi in Thailand is narrow, perhaps a 100 meters wide sandy beach between two higher rocks. The tsunami in the Indian Ocean some years ago flooded the whole connecting low areas, but not much time later all had been the same as before. Except of the touristic infrastructure that was partly destroyed. The doggerbank had still been massive those days and the tsunami might nevertheless have caused weakness points. The main cause of the long lasting inundation of the dogger bank, however, had been the rise of the sea level.
@@drscopeify Yeah, of course ... a huge tsunami is able to flood much of a low lying area like what had been connecting UK and France those days. This land bridge had to be flat, because actually there are no islands, it had no deep valleys, else these had connected the old North Sea with the western Channel. And of course a tsunami is able to inundate 2 kilometers, 10 or perhaps even 100 kilometers, depending on the height of the tsunami. But the difference between a tsunami and the sea level rise after the ice age is simply time, the duration of flooding. A sudden tsunami is gone after some hours and the water will flow back where it came from. Of course all settlements are gone, most of the people dead. The post glacial sea level rise is happening since the end of the ice age, very slowly but steadily rising and flooding the dogger bank and the land bridge between UK and France forever. Or, to be correct, not forever, just until the next ice age will happen. 🖐👴
Im not sure your map showing a land bridge to france is correct, there was a massive river going down between dover and calais, probably the one of the biggest rivers on the planet in fact as most european rivers joined it before heading down whats now the channel.
If you decide on more “landslides,” I’m interested in the Hawaiian islands where huge side sections of extinct volcanos collapsed. And what can we expect from future “landslides” there? Im not sure if landslides would be the correct term. And does Puerto Rico also pose ricks with the trench there?
maan... please please please, improve audio recording. its very easy to mishear some of the words and your content is quite packed with terms/jargonisms for people outside of your expertise. Otherwise, thanks for a good work!
One has to wonder whether this was the wave that finally inundated Doggerland for good? Unfortunately this video was too vague about the date for me to have any idea about that.
In another video they said England was not connected to mainland Europe when this happened, only Doggerland was above water the rest was already flooded.
hate how big events like these are measured by an average calculation of the time that has elapsed between them, its like the biggest cop-out to me. Never mind the exact circumstances that caused it, things just magically happen like clock work for no reason :)
Very good video, but for the pronunciation of "Storegga". This Norwegian word is composed of "stor" meaning "great" and "egga", which is the determinate form of "egg", meaning "edge". So the meaning of the word is "The Great Edge" and it should be pronounced as if it were written "Stoor Egga" (with a closed 'o').
Suggestion: I live in the Phoenix Arizona area and wish there was much more information on the geological history here. SOME aspects have been studied, such as there had been a caldera here. But Other parts have no information at all, for example, the Palo Verde Mountain range twenty miles south of Phoenix. The information is so limited I find it hard to believe there can be much confidence in what is believed. Please tell us more about this region.
keep telling myself "oh you know just waiting for yellowstone to erupt" but I know it won't happen in my life to or our life time but you never know h when mother nature wants to kick in thanks for the information man.
Do miss information about Doggerland in the video, but I guess you did not want to go 12k years back, understandable. Hope to see a video about it though.
@@TheDanEdwards I know that. However, Tolkien also said he had recurring dreams about a giant wave towering over the land. Giant wave + England triggered a thought about a JRRT story. :)
Thank you for this entertaining trip. 6150 BC? There is NO dating method that can be this precise. This is an expert's best guess and is disputed by other experts. It is dishonest to take artistic license with knowledge. You and your citations need to admit your guesses to your audience. Respect the fact that we don't know anything of ancient geology so precisely. All of our geo-physics dating methods are built on consensus using many assumptions which are constantly being disputed.
Hello, could it be, that the slide has happend because the weight of the Glacier was gone? I have heard that's why volcans, which are losing their Glacier would get more active, because the pressure on the magma chambre is dropping. Sorry for my English. Greetings from Germany
Incredibly low chance ... good to know ... Thanks for this interesting video about a glacial aftermath event. The transition between glacial and interglacial periods was a surprisingly fast one, same as vice versa the onset of glacial events after long interglacial periods. Nevertheless it's always still much longer than one human life. We're actually starting a human made climate change. From scientific perspective, it's an interesting experiment. From human perspective it's perhaps a disaster. Have a nice day 🖐👴
The area of this massive landslide was (relatively) recently explored further to determine if there was any risk of a new gas field (to be captured) generating another slide. For many years, it was thought by some that catastrophic expansion of methane clathrate generated the slide. This was later disproven however with more recent evidence. I agree with the found results that developing a new gas field in the area will NOT trigger another slide.
. . . methane clathrate generated the slide. However, with more recent evidence, this has since been disproven.
Sounds better.
@@candicezinnick3449 Thank you Mrs. Grammerly.
@@PifflePrattle How does anybody learn from their mistakes, if their not made aware of possible improvements?
@@candicezinnick3449 Twas meant in jest.
BTW you mistakenly wrote "their" instead of "they're".
I think there's some internet law about correcting grammar online. The correction always contains a misteak.😀
@@candicezinnick3449 Wow, pretty picky! I'm into correct grammar as well, but this hardly qualifies as a major error. Not like confusing something as serious as "they're" and "their"! 🤣🤣
In The smith museum in Stirling you can find whale bones from this tsunami. Blue whales up to 100 feet in length were brought inland by the tsunami and dumped around Stirling. There were flint tools discovered among the bones.
No way! I'm from Falkirk and I had no idea about this or the museum!
@@hunterG60k humans were way more advanced back then. Look up the Denisovans they were very advanced.
@E Van not like Primative Technology.
who told you that your blubber
I've been in the North Sea and crossed the Arctic Circle. Trust a sailor on this: compared to the normal everyday weather in the North Sea, the one in a zillion chance of another Storegga Slide should be the absolute last of your worries. Beaufort 10+ storms blowing up out of a clear sky in a matter of hours. 50 foot seas. A Nimitz class aircraft carrier's flight deck is about 80 feet from the waterline; we had rogue waves washing over it. Scariest sea conditions I've ever seen.
I can't imagine what that would be like to experience. I can only hope it's not as bad as watching a movie in a 4d full experience cinema without knowing what that involves..
How true , I've been through storms where we lost all our boats and the guard rail staunchions were bent horizontal
What boat was it?
😳
Now imagine it's the year 800 and your ship is a dragon prowed oversized canoe that you can barely fit into on account of the size of your cojones.
That was very informative. I wish he would have talked about the huge flood cataracts that formed from the North Sea overwash that permanently opened the English Channel. They are still present under water and are proof the tsunami flood that took place was truly cataclysmic in size. It’s worth a video all on its own!
would love to see a video on this!
Indeed, Especially the Silverpit Crater, Doggerlands own version of the Richat Structure.
Maybe that is planned which is why he didn't go into it here.
There was a big slide that opened NYC harbor too. It was something about a glacial collapse. The water rushed down the Hudson River and blew out the landmass between present day Staten Island and Brooklyn. (There was an exhibit on this in the Corps of Engineers section of Fed Plaza in NYC.)
Randall Carlson talked about this Doggerland flood in one of his presentations on the spectacular Washington State ice age floods 12k years ago.
It's astounding to think that an event like this, that would happen in a relatively short time, could have wiped out an entire culture, it's people and it's memory such that we will never know they were here at all.
Yeah…something similar happen to the indigenous people of north America on the upper west coast I believe…the earth is mighty powerful and with climate change we have awaken a sleeping tiger 🐅🤨
@@waris4thewealthy549 Indeed, very powerful still regardless of our perceived technoligical advancements.
@@waris4thewealthy549 indeed we did experience a tsunami in this area! In 1700 the Cascadia subduction zone ripped open, again, and inundated huge areas of the coast. We know the date and time because it went all the way to Japan, and they recorded it as an orphan tsunami. Different geological setting, similar outcome.
@@emeraldperinatalfullcircle Yeahhhh that’s it! Ha..old ticker of a brain still got a few gears winding, I just couldn’t think of the geographic area by name..thanks for confirmation…😁🤣
@@m8kingArt True…technology can’t save us from Mother Earth…Humanity gravest mistake was allowing corporations to fill in the gaps for just basic survival on the land 🤨
And you can find seashells 1000 ft up on the mountains of Australia from the landslide that happened on Molokai , Hawaii . 🌊 .
Wow excellent video most people will never know about this Thanks alot
I was aware of this when they aired a documentary about the historic Bristol Channel floods of 1607 in south west England. The documentary explored a theory that the great flood which swept up the Bristol Channel and devastated the low lying counties of Somerset, Gloucestershire and South Wales killing an estimated 2,000 people, was caused by a tsunami, triggered by an ancient fault line off the Irish coast.
It stemmed from comparisons to a storm surge in 1981 in the same area and how in the 1607 flood the water was much higher than 1981, that rocks near cliff edges in the estuary were dramatically pointing away from the sea, and particularly the description in a journal/pamphlet at the time that the flood had the appearance of arrows being shot forth from the oncoming water (which the scientists in the documentary compared to the Papua New Guinea tsunami in 1998 in which the waves looked like they were sparkling i.e. like arrows being fired.
It’s more recently been proven that the 1607 flood was more likely a massive storm surge, due to known tide heights that day, the likely weather, the extent of the flooding, and the fact that other coastal regions of the UK were flooded.
The British Isles (the islands of Great Britain and Ireland) are blessed to sit on a fairly safe geological area, but we must remember our past to know that destructive events have occurred and could happen again.
We also have a fair share of earthquakes, often triggered by faults in ancient rocks that underpin whole counties, or strike slip faults many kilometres under the ground, as was the case in 2008 in the county of Lincolnshire in the East Midlands, when the little town of Market Rasen was hit by a 5.2 (Richter scale) quake with a duration of 10 seconds. I live in the East Midlands, about 60 miles from Market Rasen in the county of Staffordshire, and I remember my cousin telling me that his bearded dragon was freaking out before the shock of the quake hit us, although by the time the shock reached us it was very diminished but people in my town could feel it.
That 5.2 scared the shit out of me, every pipe in my home rattled badly for over 30secs, and it sounded like a line of battle tanks were thundering past as well. I was in nottingham btw.
As a layman and subscriber to this channel, I think it would be of great interest to see a GH presentation of all the known potential submarine large landslide sites and the geology community's current assessment of the risk levels they pose. Cheers.
Thanks for covering the Storegga Slide and Tsunami. I think I asked for this sometime in the last 12 months.
I find it fascinating that Britain was inundated in this way. It cannot have done Doggerland much good either.
i recalled the first time i saw the sea floor map of the english channel and the surrounding areas. i thought that it looked like a huge underwater landslide/tsunami combo carved out the area at one point. i was glad to hear that science worked in favor of that hypothesis.
Rest in peace, Doggerland.
Awesome topic. Massive amount of research on your part. Furthermore your graphics simplify a complex topic and make it understandable for non-geologist. Thank you!!!!
A followup video on Doggerland (why it was sinking before this happened) and how the Storegga Slide impacted it would be very helpful. Are there other big tsunamis that were that big in geologically recent times? How did the Christmas tsunami in Sumatra 2004 compare? I’m waiting for your definitive video on the 9.0 Cascadia Subduction Zone earthquakes/tsunamis with the warning for us in OR, WA, BC and N CA that’s due to hit any day.
The sinking of doggerland was primarily driven by isostatic rebound, as the areas that had been under the ice sheets lifted due to the tremedous weight of the sheets being removed. Around the periphery there would have been sinking as the land sought to reestablish equilibrium
A Lot of land disapeard below the sea in the period where the massive glaciers in europe and north america melted. the sea lvl did increase up to 125 meters, areas where there was the most ice acctualy dident end up loosing large amount of land to the sea lvl increasing because of the massive weight of ice sheets up to 3km thick and the old coast line from 12k years ago etc apears 10s of meters some places i think up to a 100 meters above todays sea lvl
this is also the reason why norway gets hit by tiny earthquake all the time (only a few you would be able to acctualy feel)
source for sea rising: NGU (Norges geologiske undersøkelse) translation to english: (Norways geolocial enquiery) atleast i think thats how to translate it, im not entierly sure.
with the ice melting the land below will also now start to slowely rise this proses will last for thousands of year afther all the ice is gone to. the coast we have today would be gone, but antartica would acctualy grow larger. but it wouldent be able to make up for the loss of land area we would suffer not to get to talk about the economical impacts if there starts forming massive lakes of melted water containing millions of cubic meters of water behind ice walls or walls made by dirt stone and gravle (there is belived to have been some lakes like this beeing made in north america that increased the water lvl realy fast when the walls stopping the water from going into the sea collapsed from the pressure etc leading to a sharp increase possible of a meter or two quickly, quickly here beeing in a year or two maybe more maybe less.) any event like that would lead to massive economical problems
@@mrpirate3470
Still happening mate, Scotland is still rebounding and East Anglia still dropping.
Very interesting! Thanks!
Makes you wonder the many different ways of how history would play out if Britain remained a peninsula and Dogger land remained.
One example is the trilogy:
Stone Spring
Bronze Summer
Iron Winter.
That was fascinatung ! Many thanks !
My home country of the Faroe Islands is geologically very inactive these days so it's nice that they get a mention whenever they do appear in bigger events that have taken place. So thanks for the shout-out. :)
Shout out to the Faroes!
This program has gotten so good that nowadays I click the Like button before it even starts. Your work is excellent sir and much much appreciated 🙂
I've always wondered what those weird domes to the southwest of the Faroe Islands are. I've checked online and wasn't able to find anything.
The landslide had a volume that was equal to the DRE estimates of the Toba Supereruption before the estimate which made it almost a VEI-9 !
I've heard of that. It was good to hear your description of it.
Very informative. Alongside your volcano series, geologic oddity series, and impact crater series, could you perhaps do a major earthquake series? Discussing major historical and prehistoric earthquakes.
Thank you for the information.
You make sure this never gets boring.
While its difficult to do archeology under water, there has been some attention given to Doggerland recently and what it would have been like to have a big island in the North Sea. If there had been an island at the time of the tsunami, the people would have had no place to go but their boats.
Boats? They would have all been smashed.
It's thought that Doggerland may have been the most densely populated part of Britain at the time as it would have had a mild climate and lush flora providing habitat for many animals.
There’s an exhibition called The Treasures of Doggerland at the natural history museum in Leeuwarden. I haven’t seen it yet because I had Covid, but I intend to go next week. It closes September 4th.
@@kellydalstok8900 Its probably the same one we had in Leiden, but moved to Leeuwarden? If so its highly recommended! I had no idea we had all kinds of apex predators here like lions, tigers, etc.
This is so cool
From the sumbarine topography, it seems the Storegga slide was preceded by at least one other slide to the southwest, outside of the red border and further south of the subsequent smaller slides. The shelf border in this area follows a similar circular trend but is less sharp. It seems that sediment platforms might be propense tothese kind of slides.
Fantastic video! Very well presented and explained!
Thank you 🙏
Love your work GH. The post glacial innundation of the North Sea and the creation of the English Channel is fascinating, would love to see more. Also curious about the Laacher See :).
Living in England I always thought that a repetition of this slide is the greatest potential natural disaster we could face.
Can any one explain who and how the alleged wave heights
were measured?
Easy. ocean sediments and critters left in the soil where the wave reached and then left behind as the water rolled back. The dirt layer would be * humm why are there fish and sea shells here 80 miles distant from the shore?* and thus finger pointing to a rather hefty water displacement. The harder part is dating then figuring where said wave came from and triggered.
@@pakeshde7518 The dating can be determined by carbon dating wood, and other organic materials above, and below the tsunami deposits. The above organics will give a newest date, and the below organics an earliest date. Ergo the tsunami occurred before one date, but after the other date.
If the carbon dating ranges over lap is will narrow it down dramatically.
The wave heights in Shetland were amplified by the landscape around the coastline. The relatively narrow channels between the islands and the sea lochs (known as voes in Shetland) concentrated the waves. There are several sites around the coast where the sand and debris washed up by the tsunamis can be seen in the layers of peat.
Not many years ago ( I live near the coast - actually in a fjord - in from where this happened ) there was an around 3.5 magnitude earthquake out in the ocean near Storegga ( meaning " big edge" ). I was in contact with one of the seismic networks in Norway ( near Oslo ). To my surprise I met an englishman, Germans or other are far more common, Norwegians have been ousted it seems. I asked if this earthquake could be related to the Storegga slide ? To my big surprise he had no idea what I was talking about, he didn't know a thing about it, never heard of it !! So I had to explain to him what it was all about , sediments from the tsunami in Scotland etc, etc.
How is it possible that a British seismologist working in Norway wouldn't know about it ? Not more than about five years ago this ...
Probably did his degree in dramatic arts.
Thank you for this summary. I knew about the slide but not many of the details you provided in particular the huge width of the slide. Underwater slides or slides that displace large amounts of water such as from volcanic rock are fascinating to me as it shows the incredible forces involved in this type of incident. What is left on the seafloor, giant boulders weighing many 100's of tons are witness to the catastrophe this must have caused.
This made me think that the latent memory of this event would have been the origin of the flood myth. Just imagine the survivors migrating and spreading the word of such an apocalyptic event. Over time the story could have reached the near east and be incorporared as a myth...
The connection to the abandonment of Scara Brae seems unlikely as several small personal items were found dat the site. A tsunami would have carried them away.
Can you please explain the wakulla volcano. I want to know why people thought there was a volcano in Florida.
This is close to home for me. I could handle the temperature drop[ 14 degress no problem . This was very interesting Thank you🐾
What was referred to there was the global average temperature. Some areas will get much colder than that.
Thanks for another very interesting post. But you have got the land bridge a bit wrong - the one you show was breached around 450,000BCE! It is confusing because there were two different land bridges at different times. The original one, across what is now the Dover Straits, was a continuation of the North Downs, a ridge of Chalk maybe 150-200m high with a gentle north side (the geological dipslope of the Chalk) and a steep south side over the earlier (and much softer) clays of the Weald. To the north of that, the Thames and Rhine drained into the North Sea. But during the Anglian Glaciation the North Sea basin was largely filled with ground-fast ice from the Scandinavian icecap. To the south of the ice, the Thames and Rhine continued to flow (at least in summer) so a proglacial lake built up between the Essex and the Low Countries, until it overtopped the Chalk ridge and formed a huge waterfall - since wet Chalk apparently has very little mechanical strength and the clay below was soft, the water may have cut through like a hot knife through butter, excavating a gorge through the whole ridge perhaps in only a few weeks. From then on, there was a marine channel at least during interglacial high sea levels, steadily widening by erosion to form the Straits of Dover.
However during the last glaciation if not before, a low but wide ridge of high ground (Doggerland) formed across the southern North Sea. By c 7000BCE this was reduced to a strip of land running roughly from north Norfolk to NW Germany (the Wikipedia article on Doggerland does not show the latest reconstruction), inhabited by Mesolithic fishers/hunters/gatherers. The impact of the tsunami on this land must have been devastating, though it seems unlikely that the tsunami flooded all the way across (even tsunami waves have a finite wavelength, and once the crest has passed the water level subsides though there may of course be a second wave, or more). And it would hardly have washed away a wide expanse of low-relief well vegetated land, though if it funnelled into a particularly low and narrow point it could possibly have scoured out a breach. So it is generally thought that the land bridge survived for a few hundred years after the tsunami, before it was submerged by the continuing post-glacial rise in sea level. But the tsunami was still devastating for the Mesolithic communities of the land bridge and the east coast of England and Scotland further north,.
Of course the science may change again with further research, but my impression is that it's getting fairly secure by now.
Love new stuff like this
Good video learn a little more with each one
isn't this what finally killed off the remainder of doggerland?
Yes. And more than 50% of the commenters will point that out.
I don't think so, because tsunamis are a short living disaster. After several hours at least, the sea level is back to what it had been before. An example: the island of Ko Phiphi in Thailand is narrow, perhaps a 100 meters wide sandy beach between two higher rocks. The tsunami in the Indian Ocean some years ago flooded the whole connecting low areas, but not much time later all had been the same as before. Except of the touristic infrastructure that was partly destroyed.
The doggerbank had still been massive those days and the tsunami might nevertheless have caused weakness points. The main cause of the long lasting inundation of the dogger bank, however, had been the rise of the sea level.
@@OpaSpielt The English Channel is very flat area so it would have been incredibly susceptible to a Tsunami.
@@drscopeify
Yeah, of course ... a huge tsunami is able to flood much of a low lying area like what had been connecting UK and France those days. This land bridge had to be flat, because actually there are no islands, it had no deep valleys, else these had connected the old North Sea with the western Channel. And of course a tsunami is able to inundate 2 kilometers, 10 or perhaps even 100 kilometers, depending on the height of the tsunami. But the difference between a tsunami and the sea level rise after the ice age is simply time, the duration of flooding. A sudden tsunami is gone after some hours and the water will flow back where it came from. Of course all settlements are gone, most of the people dead.
The post glacial sea level rise is happening since the end of the ice age, very slowly but steadily rising and flooding the dogger bank and the land bridge between UK and France forever. Or, to be correct, not forever, just until the next ice age will happen.
🖐👴
Nice to see a video about doggerland I have alot of amber washed up from it
I am glad that this man was there to tell us what happened
Maybe the people there left the story on their laptop for us to know
Im not sure your map showing a land bridge to france is correct, there was a massive river going down between dover and calais, probably the one of the biggest rivers on the planet in fact as most european rivers joined it before heading down whats now the channel.
Mind blowing 🤯
Interesting! 🧐 Thanks
New Zealand Kaikoura has a potential landslide causing sea levels to rise about 8m?
So what is up with Iceland? Just which - if any - of the volcanos there showing volcanic quakes and uplift do you think will erupt?
If you decide on more “landslides,” I’m interested in the Hawaiian islands where huge side sections of extinct volcanos collapsed. And what can we expect from future “landslides” there? Im not sure if landslides would be the correct term.
And does Puerto Rico also pose ricks with the trench there?
Interesting! I had not heard of this before.
maan... please please please, improve audio recording. its very easy to mishear some of the words and your content is quite packed with terms/jargonisms for people outside of your expertise. Otherwise, thanks for a good work!
One has to wonder whether this was the wave that finally inundated Doggerland for good? Unfortunately this video was too vague about the date for me to have any idea about that.
Geology Hub, there was an earthquake in Luzon recently !
Could you speak about the island in the Canary Islands that is teetering and is a potential tsunami creater
If you are talking about La Palma, he has covered that several times during the eruption last year. Search his channel for them.
@@MelanieCravens this is not an eruption. It's some kind of geological fault that has half an island teetering on the edge.
@@allenhonaker4107 I know. And I know he discussed that during his videos about the eruption. The island is La Palma. Volcano is Cumbre Viejo.
Yep....lots of water! ;)
That's the sort of thing that would have ancients thinking, "The gods are angry with us!"
In another video they said England was not connected to mainland Europe when this happened, only Doggerland was above water the rest was already flooded.
hate how big events like these are measured by an average calculation of the time that has elapsed between them, its like the biggest cop-out to me. Never mind the exact circumstances that caused it, things just magically happen like clock work for no reason :)
Wow!
Very good video, but for the pronunciation of "Storegga". This Norwegian word is composed of "stor" meaning "great" and "egga", which is the determinate form of "egg", meaning "edge". So the meaning of the word is "The Great Edge" and it should be pronounced as if it were written "Stoor Egga" (with a closed 'o').
the mjolnir crater is kinda close, dont know if that one has been covered. Love your videos keep it up!
What you call the Netherlands is Denmark. The Netherlands lays between England and Germany.
Is that the tsunami that wiped out Doggerland?
Suggestion: I live in the Phoenix Arizona area and wish there was much more information on the geological history here. SOME aspects have been studied, such as there had been a caldera here. But Other parts have no information at all, for example, the Palo Verde Mountain range twenty miles south of Phoenix. The information is so limited I find it hard to believe there can be much confidence in what is believed. Please tell us more about this region.
the Norwegian landmass is still rebounding upwards from the glacial ice cover; meaning that the chances of a repeat tsunami is increased
keep telling myself "oh you know just waiting for yellowstone to erupt" but I know it won't happen in my life to or our life time but you never know h when mother nature wants to kick in thanks for the information man.
Dude sounds a bit like Kermit the Frog lol.
Do miss information about Doggerland in the video, but I guess you did not want to go 12k years back, understandable. Hope to see a video about it though.
As soon as you said it happens every hundred thousand years, I thought it would have something to do with ice ages.
I often see spit-takes as exaggeration, but in this particular case I'm glad I wasn't drinking when you first mentioned the size of the landslide.
nothing makes me run faster than a mechanized voice
Earthquake and Tsunami in Sicily and Calabria and the Mediterranean
Can you do a video on ancient mountain ranges?
Please pronounse the word as stor-egga, meaning the large edge. Put the stress on the first syllable
Reminds me of Tolkien's story of Numenor.
Tolkien's Numenor is Plato's Atlantis. The story is about bad people being judged by god(s).
@@TheDanEdwards I know that. However, Tolkien also said he had recurring dreams about a giant wave towering over the land. Giant wave + England triggered a thought about a JRRT story. :)
Fault lines of Southern Indiana and Illinois, shattered glass.
Hot spot in Minnesota
Ah, I have seen undersea cartography of geology events that had landward impacts.
Can you cover the Agulhas Slide? Not a lot is known about it.
Water is powerful
I found sea shells strewn about at Cairn o Mount , NE Scotland. A height of 1488 ft
Another slide is low... & then it slips... oh yeah, we didn't consider that equation...
there was a very big ice lake on northpol they edges broke and made i massive flood that washed all over earth
How does material under the water displace the water it's in? I'm having a hard time understanding this.
Think of a spoon or paddle.
@@flamencoprof Thanks
There was a Tsunami in the Bristol Channel in 1607
Thank you for this entertaining trip. 6150 BC? There is NO dating method that can be this precise. This is an expert's best guess and is disputed by other experts. It is dishonest to take artistic license with knowledge. You and your citations need to admit your guesses to your audience. Respect the fact that we don't know anything of ancient geology so precisely. All of our geo-physics dating methods are built on consensus using many assumptions which are constantly being disputed.
Hello,
could it be, that the slide has happend because the weight of the Glacier was gone? I have heard that's why volcans, which are losing their Glacier would get more active, because the pressure on the magma chambre is dropping.
Sorry for my English.
Greetings from Germany
The whole Planet is shifting 🕊🙏👣⌛️
Britain attached to France? Yes, but mostly to modern day Belgium according to your map.
In the Atlantic, it’s called the title wave
Imagine being out hunting when the tsunami struck, and coming back to a wasteland. No wonder people believed in trolls and sea monsters.
15 meters lower, eh?
when dream jumps into the ocean:
"Scientists believe this kind of event could happen again some time in the future." No kidding!!!
This is empty of any value.
Oh no...something else to worry about.
Is this the tsunami finished Doggerland?
6150 BC? How do you know?
imagine how many Humankind Civilization reset back to Stone Age cuz Catastrophic event like that
Incredibly low chance ... good to know ...
Thanks for this interesting video about a glacial aftermath event. The transition between glacial and interglacial periods was a surprisingly fast one, same as vice versa the onset of glacial events after long interglacial periods. Nevertheless it's always still much longer than one human life.
We're actually starting a human made climate change. From scientific perspective, it's an interesting experiment. From human perspective it's perhaps a disaster.
Have a nice day 🖐👴
So, it's possible that Scotland could get wiped out _again?_