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Off-topic: Flood myths are in so many religions. Large-scale or global flooding. Mass devastation. If there is so much smoke there's gotta be fire. If you loo

Off-topic: Flood myths are in so many religions. Large-scale or global flooding. Mass devastation. If there is so much smoke there's gotta be fire. If you look at last glacial maximum, sea-levels were 110-120m below where they are today. They rose from below 100m to 0m in a matter of only about 8000 years (13000 BC to 5000 BC) [0]. Persian gulf region was fertile land, got flooded and turned into a gulf. The sea-level rise was observed/experienced all over the world. At one point the sea-level rise was so fast it was 2-3m in one lifetime. This much vertical change in coastal regions can change the landscape by 100s of meters horizontally. So you could be living in that time and hearing stories from your grandfather about the vast amount of land that got flooded over his lifetime. Word-of-mouth "history became legend. Legend became myth" (to quote LOTR). Written history did not start until much later (Gilgamesh ~2100BC, Herodotus ~450BC, neither considered serious/rigorous historical works. I guess Gilgamesh is considered fiction.). I think it's a highly valid theory that sea-level rise led to flood myths in so many regions and so many religions all over the world. [0] https://en.wikipedia.org/wiki/Early_Holocene_sea_level_rise https://en.wikipedia.org/wiki/Early_Holocene_sea_level_rise

choxi 6y ago
There’s also a growing body of research that indicates a comet impact is what triggered the end of the last ice age, which would very well have caused massive floods. Randall Carlson has a lot of fascinating theories in this area.
- eloff 6y ago
  This is also a good point, but it would have mostly affected North America which was sparsely populated.
  - skindoe 6y ago
    https://en.m.wikipedia.org/wiki/Magicians_of_the_Gods https://en.m.wikipedia.org/wiki/Magicians_of_the_Gods worth a read
  - ncmncm 6y ago
    We don't really know much of anything about the pre-historical population of the Americas. E.g., only one unambiguous Clovis skeleton is known. We have certain knowledge that the Amazon region was heavily cultivated ~10,000ya, which would have required substantial population. A lot can happen in a millennium or three. Also, there is evidence of multiple extinctions in South America and South Africa at the same time, and of a strike in Syria. I don't think we have evidence yet to determine a bound on the range of effects.
    - eloff 6y ago
      We know North America was mostly filled with hunter gatherer tribes. So the population would have been low compared to even South America, but especially Europe and Asia. We don't know all that much about the supposed impact, as you say. Just that more large mammals in North America went extinct than anywhere else, so it was likely the worst affected.
  - cheaprentalyeti 6y ago
    If Hiawatha Crater is the result of a cometary impact during the Younger Dryas it would have had global effects.
eloff 6y ago
Also many river systems would have seen crazy flooding as the glaciers melted. Especially when ice dams formed and burst. Look to the American West to see floods that make Niagara falls look like a rain gutter.
- adolph 6y ago
  https://en.wikipedia.org/wiki/Missoula_floods https://en.wikipedia.org/wiki/Missoula_floods During the last deglaciation that followed the end of the Last Glacial Maximum, geologists estimate that a cycle of flooding and reformation of the lake lasted an average of 55 years and that the floods occurred several times over the 2,000-year period between 15,000 and 13,000 years ago. U.S. Geological Survey hydrologist Jim O'Connor and Spanish Center of Environmental Studies scientist Gerard Benito have found evidence of at least twenty-five massive floods, the largest discharging about 10 cubic kilometers per hour (2.7 million m³/s, 13 times the Amazon River).
simonh 6y ago
There were several sea rise pulses during that period where the sea level role by about 1 metre per 20 years for well over a century. Given that it wasn’t unknown for adult Neolithic people to live into their 60s or even 70s, the elders in a group would likely have seen around 3 metres of sea level rise on their lifetimes. Also sudden catastrophic flood events must have occurred during a period of such massive change, especially given human populations generally are concentrated near rivers and the coast.
- ncmncm 6y ago
  It answers the questions, "Where could the water for a worldwide flood come from? And, where could it go, afterward?". A: The water came from melting glaciers, and it's all still there, drowning the ancestral homelands. Australian oral traditions record social upheavals when people moving out of the flooded Sahul region (between present Australia and New Guinea) had to negotiate shared use of the high ground that had already been populated for at least 40,000 y. It seems a safe guess that it would be traumatic to have to leave an area your people have lived in for tens of millennia.
  - klyrs 6y ago
    I'd love to read more about this. Do you know of a good reference?
    - ncmncm 6y ago
      Sorry for the delay... Aboriginal Memories of Inundation of the Australian Coast Dating from More than 7000 Years Ago Patrick D. Nunn & Nicholas J. Reid, 2015 https://sci-hub.se/https://doi.org/10.1080/00049182.2015.1077539 https://sci-hub.se/https://doi.org/10.1080/00049182.2015.107...
rapsey 6y ago
> At one point the sea-level rise was so fast it was 2-3m in one lifetime While fast in a geological sense, I do not think it is fast enough to inspire all those myths of catastrophic and sudden floods.
- simonh 6y ago
  The impact would be very non-linear though. A few metres rise isn’t a big deal for coastal cliffs but for a coastal plain, river delta or flood plain a few metres rise can translate into many dozens of kilometres of horizontal encroachment by the sea. This effect was everywhere so people in that time would constantly be getting news of flood events in other regions. Many people were nomadic too. If the sea has been rising constantly for all known and even mythic history that’s going to have a huge impact on culture. Then there’s periodic catastrophic events like glacial lake outflows, temporary dams formed from moraines and landslides collapsing, etc.
dr_dshiv 6y ago
You may enjoy reading about the flood event that turned the Black Sea from fresh water lake (smack in the middle of emergent civilization) to a salt sea. https://en.m.wikipedia.org/wiki/Black_Sea_deluge_hypothesis https://en.m.wikipedia.org/wiki/Black_Sea_deluge_hypothesis

choxi 6y ago

There’s also a growing body of research that indicates a comet impact is what triggered the end of the last ice age, which would very well have caused massive floods. Randall Carlson has a lot of fascinating theories in this area.

eloff 6y ago
This is also a good point, but it would have mostly affected North America which was sparsely populated.
- skindoe 6y ago
  https://en.m.wikipedia.org/wiki/Magicians_of_the_Gods https://en.m.wikipedia.org/wiki/Magicians_of_the_Gods worth a read
- ncmncm 6y ago
  We don't really know much of anything about the pre-historical population of the Americas. E.g., only one unambiguous Clovis skeleton is known. We have certain knowledge that the Amazon region was heavily cultivated ~10,000ya, which would have required substantial population. A lot can happen in a millennium or three. Also, there is evidence of multiple extinctions in South America and South Africa at the same time, and of a strike in Syria. I don't think we have evidence yet to determine a bound on the range of effects.
  - eloff 6y ago
    We know North America was mostly filled with hunter gatherer tribes. So the population would have been low compared to even South America, but especially Europe and Asia. We don't know all that much about the supposed impact, as you say. Just that more large mammals in North America went extinct than anywhere else, so it was likely the worst affected.
- cheaprentalyeti 6y ago
  If Hiawatha Crater is the result of a cometary impact during the Younger Dryas it would have had global effects.

eloff 6y ago

Also many river systems would have seen crazy flooding as the glaciers melted. Especially when ice dams formed and burst. Look to the American West to see floods that make Niagara falls look like a rain gutter.

adolph 6y ago
https://en.wikipedia.org/wiki/Missoula_floods https://en.wikipedia.org/wiki/Missoula_floods During the last deglaciation that followed the end of the Last Glacial Maximum, geologists estimate that a cycle of flooding and reformation of the lake lasted an average of 55 years and that the floods occurred several times over the 2,000-year period between 15,000 and 13,000 years ago. U.S. Geological Survey hydrologist Jim O'Connor and Spanish Center of Environmental Studies scientist Gerard Benito have found evidence of at least twenty-five massive floods, the largest discharging about 10 cubic kilometers per hour (2.7 million m³/s, 13 times the Amazon River).

simonh 6y ago

There were several sea rise pulses during that period where the sea level role by about 1 metre per 20 years for well over a century. Given that it wasn’t unknown for adult Neolithic people to live into their 60s or even 70s, the elders in a group would likely have seen around 3 metres of sea level rise on their lifetimes. Also sudden catastrophic flood events must have occurred during a period of such massive change, especially given human populations generally are concentrated near rivers and the coast.

ncmncm 6y ago
It answers the questions, "Where could the water for a worldwide flood come from? And, where could it go, afterward?". A: The water came from melting glaciers, and it's all still there, drowning the ancestral homelands. Australian oral traditions record social upheavals when people moving out of the flooded Sahul region (between present Australia and New Guinea) had to negotiate shared use of the high ground that had already been populated for at least 40,000 y. It seems a safe guess that it would be traumatic to have to leave an area your people have lived in for tens of millennia.
- klyrs 6y ago
  I'd love to read more about this. Do you know of a good reference?
  - ncmncm 6y ago
    Sorry for the delay... Aboriginal Memories of Inundation of the Australian Coast Dating from More than 7000 Years Ago Patrick D. Nunn & Nicholas J. Reid, 2015 https://sci-hub.se/https://doi.org/10.1080/00049182.2015.1077539 https://sci-hub.se/https://doi.org/10.1080/00049182.2015.107...

rapsey 6y ago

> At one point the sea-level rise was so fast it was 2-3m in one lifetime While fast in a geological sense, I do not think it is fast enough to inspire all those myths of catastrophic and sudden floods.

simonh 6y ago
The impact would be very non-linear though. A few metres rise isn’t a big deal for coastal cliffs but for a coastal plain, river delta or flood plain a few metres rise can translate into many dozens of kilometres of horizontal encroachment by the sea. This effect was everywhere so people in that time would constantly be getting news of flood events in other regions. Many people were nomadic too. If the sea has been rising constantly for all known and even mythic history that’s going to have a huge impact on culture. Then there’s periodic catastrophic events like glacial lake outflows, temporary dams formed from moraines and landslides collapsing, etc.

dr_dshiv 6y ago

You may enjoy reading about the flood event that turned the Black Sea from fresh water lake (smack in the middle of emergent civilization) to a salt sea. https://en.m.wikipedia.org/wiki/Black_Sea_deluge_hypothesis https://en.m.wikipedia.org/wiki/Black_Sea_deluge_hypothesis