Well that's interesting

Discussion in 'Science' started by garyd, Feb 5, 2025.

  1. garyd

    garyd Well-Known Member

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    Just saw a head line about increased seismic activity around santorini. For those of you who do not know Santorini is the site of a very powerful volcano in the Aegean Sea. The last time it went off it crippled if not destroyed out right the Minoan Civilization. Which of those two is a matter of interpretation. It is thought by some to be what Plato was talking about.

    So then maybe God is getting read to take a more direct hand in the war between Israel and Palestine?

    Interestingly enough the magma chamber beneath Italy's super volcano Campi Flegrei seems to be filling up nicely as well and there is if I recall another story from much earlier that there is also increased seismic activity in its vicinity as well. I don't know off hand if Vesuvius or Etna are getting more agitated than usual but all this certainly is not good news. Note none of this means that an eruption of any of them is imminent but I would not blame anyone for getting a bit nervous.That is an awful lot of volcanic bang in a very small area of the world.
     
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  2. fmw

    fmw Well-Known Member

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    No it is just the nature of a seismic hot spot like the one that exists under Yellowstone park.
     
  3. garyd

    garyd Well-Known Member

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    They are seismic hotspots because they are underlaid by more or less massive volcanoes and the domes associated with them are moving upward. When that much rock moves you get seismic activity, The same things happened before Mt St.Helen's blew. It is happening about Krakatoa as well.
     
  4. drluggit

    drluggit Well-Known Member Past Donor

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    There seems to be a lot of deformation happening in the Santorini caldera. I think it was prudent for the Greeks to get folks off the island. If it does blow up, it might rival the explosion that happened in Tonga.

    The campi super volcano might really be something to worry about, especially for the Italians. This is the kind of eruption that has the ability to change the climate.
     
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  5. fmw

    fmw Well-Known Member

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    Yes.
     
  6. LiveUninhibited

    LiveUninhibited Well-Known Member

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    I guess that's good news for republicans. When climate change becomes more undeniable, they'll have another thing to try to blame it on.
     
  7. fmw

    fmw Well-Known Member

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    Volcanic eruptions have nothing to do with climate change. Actually climate change doesn't have much to do with climate change.
     
  8. LiveUninhibited

    LiveUninhibited Well-Known Member

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    haha, that's funny. Actually, volcanic eruptions absolutely can change the climate, it just hasn't happened on a sufficient scale in recent days. It was definitely more of a thing back during the Permian Extinction event, the worst mass extinction in Earth's history. This was driven by climate change, which was driven by volcanic activity.
     
  9. Jack Hays

    Jack Hays Well-Known Member Donor

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    While you are correct in a pedantic sort of way, in current usage "climate change" almost always refers to the claimed climate influence of CO2 produced by human activity.
     
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  10. conservaliberal

    conservaliberal Well-Known Member

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    Anyone who seriously believes that volcanic (or seismic) phenomena are concomitant with 'climate change' is in need of remedial education -- immediately!

    Hint: volcanoes can temporarily change climate, but the climate doesn't cause volcanoes to erupt! :lonely:
     
    Last edited: Feb 22, 2025
  11. LiveUninhibited

    LiveUninhibited Well-Known Member

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    I think you completely missed the point. First, volcanic activity CAN cause climate change. It DID during the Permian extinction event.

    If we had a large increase in volcanic activity at the same time climate change from fossil fuels is accelerating, it would leave an opening for people who don’t want to believe humans can cause climate change to blame the volcanoes.
     
  12. conservaliberal

    conservaliberal Well-Known Member

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    I think you completely missed my reply, in which I said, "Hint: volcanoes can temporarily change climate, but the climate doesn't cause volcanoes to erupt!"

    People who are so badly educated that they must look for 'coincidences' in completely unrelated events so that they may formulate their opinions aren't worth the bother of anyone even needing to take notice of them. Don't be concerned about leaving "an opening" for them -- they'll FIND one, even if it doesn't really exist....

    [​IMG]. "What're ya looking at me for...?"
     
    Last edited: Feb 23, 2025
  13. 557

    557 Well-Known Member

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    Easy tiger. That’s not necessarily true. We have pretty solid evidence isostatic rebound can lead to increased volcanic eruptions.


    https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024GC011743



    Historical reconstructions support these findings.

    https://pubs.usgs.gov/publication/7...in volcanic,effects on glacier ablation zones.


    https://news.climate.columbia.edu/2...illeran ice sheet,events and prepare for them.

     
  14. conservaliberal

    conservaliberal Well-Known Member

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    Well, golly, then you'd think that what with all the sudden and alarmingly frequent 'global warming' going on (according to the 'climate change' gurus) that we'd have volcanoes going off all over the place at a steadily increasing pace. But...

    [​IMG]

    It looks like kind of an 'up-and-down' picture to me.... :lonely:
     
  15. Mushroom

    Mushroom Well-Known Member

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    Possible, but not generally very likely at all. As we have not seen anything even remotely like that since Trilobites were one of the dominant species of life on the planet.

    What it can and does cause is short-term climate events. Even the disastrous "Year Without a Summer" in 1816 caused by the eruption of Tambora only lasted 2-3 years and had absolutely no long-term effects. And the same is true for every major eruption tracked for over 2,000 years. A very short term event and effect, gone within 2-3 years at most and everything returned to how it was before.

    The events around the P-T event can not even be compared to the occasional massive volcanic events we have seen in over 10,000 years (or even 10 million years). That involved several events, the most notable being the Siberian Traps. The most massive volcanic event in half a billion years, and it deposited over a million cubic miles of flood basalt. And that had such massive effects because it was a constant and non-stop event that lasted for over two million years.

    And that is not the only such event, it is simply believed to be the longest one. The Columbia River Basalt Group measures about 41,000 cubic miles. In a much smaller area, primarily covering Eastern Washington, as well as parts of Oregon and Idaho. But that was not a single event, but over 300 much shorter events that took place over about 5 million years. And is likely continuing, as there is more and more evidence linking it to the Yellowstone Hot Spot, so it is only a matter of time before that happens again.

    And one notable difference is that between layers in the Siberian Traps, there is almost nothing. It was a long term constant event, where as in the Columbia River it was stop and go, with long periods between events. We know this for a fact as there is ample proof of the ecosystem recovering between events, which is why we see things like fossilized ginko forests trapped between layers of basalt. And evidence of lakes and rivers between layers of basalt. That makes it more akin to Hawaii, which will have an event that lasts for decades, then go dormant again for more decades before returning.

    And it can be seen in the area. The Siberian Traps covers over 7 million square miles, while Columbia River only covers around 81,000 square miles. But there were climate effects from it, as the Mid-Miocene Climate Optimum is commonly linked to that event. Which actually saw a massive warming and greening of the planet. With the Arctic Ice Cap vanishing, and the Antarctic Ice Cap being reduced to about 25% of what it is today. And ultimately that is what allowed us to exist in the first place, as that is the same time period that primates exploded, and started to diversify in ways that had not been seen before in the forests and rainforests that came to dominate the planet in that time period.

    But one can not really look at an event that was the worst in half a billion years and even try to link it to anything that followed. Especially as that was hardly the only volcanic event, and we have much more recent events that we actually can study. Heck, the most recent such events are not even that old. The last major eruption of Craters of the Moon in Eastern Idaho was only around 2,000 years ago. With major flood basalt events there only around 10,000 years ago.

    And I continue to shake my head, as for some reason I still see people confusing "warmer" and "drier". As in every example short of the continents being in a Supercontinent formation, when the planet warms it also gets significantly wetter. And forests and rainforests come to dominate the surface of the planet. Not deserts, like so many seem to believe.

    But to get a grasp on what is meant by events of that level, one has to remember the scale. Look at what is happening in Iceland or Hawaii, and look at how large the actual eruptions are. Now multiple that so that the entire state of Nevada is one giant mass of such fissures spewing lava in the amounts that it could cover Los Angeles in several meters of lava a year. Now you are talking about an event roughly the size of the Columbia River group. Expand that to a lava field that covers most of Western Europe and spewing enough lava to cover Germany in several meters of lava a year, now you are talking about the Siberian Traps.

    Most humans simply can not comprehend the scales of time, area and volume involved in events like that.
     
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  16. 557

    557 Well-Known Member

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    Only small potentially volcanic parts of the planet are losing ice. And not at a rate we would be able to observe statistically significant volcanic activity in our lifetimes.

    Ice loss isn’t particularly sudden or alarming. What would be alarming would be the opposite, a planet retreating back into a deeper ice age. There’s a reason less people live in Antarctica than equatorial Africa!
     
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  17. Mushroom

    Mushroom Well-Known Member

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    And that is also something that is starting to change rapidly.

    It is now believed to be over 100 active volcanoes on Antarctica. With around 20 actively erupting, but completely unseen as they are below over 2 kilometers of ice.

    What is now known as "glaciovulcanism" is still relatively "new", with most of the serious research into it only happening in the last 25 years. But it is also helping us start to understand a great many mysteries about that continent. Including why some of the ice sheets are moving faster than others. And almost all of them are moving faster than models of other ice sheets, like those that had once covered most of Europe and North America. Those were all rather static, moving mere centimeters a year (almost entirely fed by gravity and increased amounts of ice). Yet in Antarctica, some of the ice sheets are moving at a breakneck speed of around a kilometer a year. That discrepancy has been puzzled on for about a century, but the answer now appears to be glaciovulcanism.

    Volcanic fields below the ice melting it, allowing the mass above to travel faster as there is a layer of water between the surface and the ice sheet itself.
     
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  18. 557

    557 Well-Known Member

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    The physics of ice skating at massive scale!
     
  19. Mushroom

    Mushroom Well-Known Member

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    It really is, when most things that take place on a geological scale happen at nowhere near those kinds of speeds.
     
  20. conservaliberal

    conservaliberal Well-Known Member

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    I misunderstood what you meant about climate change and volcanic activity. I thought you were talking about events that were rather more recent, like since the beginning of human history.
     
  21. LiveUninhibited

    LiveUninhibited Well-Known Member

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    My point wasn’t that I thought volcanic activity would cause climate change soon, rather that an increase in volcanic activity would give deniers another excuse to discount the effect of carbon emissions.
     
    Last edited: Feb 23, 2025
  22. Mushroom

    Mushroom Well-Known Member

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    Ah, got it. You are one of those that places anybody that does not agree with you in a camp. That's all I need to hear.

    Climate change because of volcanology can happen today, or tomorrow, or 1,000 years from now. It literally happens all the damned time. But apparently you are one of those that blames everything that happens on the planet on humans causing it.

    Sorry, humans are not causing more volcanoes to erupt. Or causing earthquakes to happen. And to be honest I am finding it increasingly hard to keep a straight face when the automatic answer to anything that happens on the planet is that "humans did it".

    That is not science. No more than looking at anything that happens and saying "God did it" is science. It is just another pseudo-religion trying to pretend it is science. It is no more "science" than "Scientology" or "Christian Scientists".
     
  23. 557

    557 Well-Known Member

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    The Cordilleran ice sheet retreat that was the focus of one of my previous links occurred around 10,000 years ago. There were humans freezing their asses off around the edges of that ice sheet.

    But no, I’m not saying driving a 3/4 ton pickup is going to cause western Antarctica to explode with volcanic activity. :)
     
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  24. drluggit

    drluggit Well-Known Member Past Donor

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    I just honestly don't think you understand what or how the climate is changing. It's an enormously humorous thing to be able to watch.
     
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  25. LiveUninhibited

    LiveUninhibited Well-Known Member

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    Uh no. You're even more off here in terms of how I think of this issue. In terms of humans causing it, I think the scale of human impact on the environment is so large that there is no surprise at all that climate would be affected. The climate was much different in eons past, and we are in the process of returning it to a state more like the past by releasing formerly locked-up carbon. Many other things also affect the climate. In terms of the details, a rational person leans on experts more than pundits and politicians, but I understand that this area of science is very complicated. The conservatives are the ones who have been religious in their insistence that humans cannot affect the climate.
     

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