forget about everything else
let's talk about something that really matters-the end of the world
if you like dulcet toned apocalyptic narration this IS for you!
I took a look at this video, actually pretty well-done except for the voice-over. The biggest difference, in my opinion, between the Naples area volcanoes and the two Kurt mentioned in the US is recrurrence. Vesuvius and Campi Flegrei have had a slew of historic eruption events and numerous events in the last 40,000 years, thus they have a much, much shorter recurrence interval than the US supervolcanoes. Additionally, the magma composition is a bit different, the US volcanoes tend to be more silica rich (toward rhyolite) composition than the Italian counterparts. Finally, the population density around the Italian volcanoes is way, way greater than LV or Yellowstone. That may not matter much because the eruptive fallout for all of these volcanoes will extend for hundreds of miles beyond the eruptive centers. There is a ton of scientific literature about all of these eruptives. I encourage you to look at those, especially the abstracts and conclusions.
Good article. "we are but ants scurrying around on the land before a landslide."
My argument all along.
Thinking that we ants can affect the climate on this earth is pushing a awful big product.
Or making lots of money for certain people for a cause that seems like a candle in the wind.
hmm.. not really into this doomsday hype stuff. Yes it will happen one day, somewhere.. but we are but ants scurrying around on the land before a landslide. Our lifetimes are so short in a geological time frame.
that was point 1.
Point 2, global impacts are kind of unusual, unless you go looking for a PT boundary type thing.. I actually wrote an article on this kind of thing once. (No my name is not Carl.. that was just the site administrator who posted it, my signature is at the bottom)
if you can stay awake, that youtube channel does a pretty good job of reporting
obviously, the sarcasm of the original post is mine
but who builds a home in a volcano?
other than super villains?
Good article. "we are but ants scurrying around on the land before a landslide."
My argument all along.
Thinking that we ants can affect the climate on this earth is pushing a awful big product.
Or making lots of money for certain people for a cause that seems like a candle in the wind.
ha, thx for the comment on the article. Glad you read it.
re global warming .. this topic comes up frequently on the boards of the sites I follow. I put my reply over on the GW thread.
The United States has it's own "Supervolcano" sites.
Scott's from Wy. backyard... Yellowstone.
And the Long Valley Caldera in the upper Owens Valley, California... https://en.wikipedia.org/wiki/...
It's one of the largest calderas on earth. Where they actually had a volcano alert warnings back in 1980.
Property values plummeted in Mammoth Lakes, California around that time.
KFLQ- You are right, they are sources of catastrophic eruptions. Either of those going off would have immense implications for US and globe. Truth is the recurrence intervals (time between events) are very large (hundreds of thousands of years). Itâs been about 700,000 years since the last major eruption at either Yellowstone or Long Valley. Iâm a probability kind of guy. In the remainder of my lifetime the likelihood of me hitting the giant powerball is much greater than those volcanoes erupting. It could happen but Iâm not losing sleep over it. I hope Iâm right.
Back in the day when I was still active at the site, a guy at volcano cafe crunched a shit-ton of seismic data to see if there was any synchronicity between earthquakes and moon phases. He found none at all. Possibly there is some effect on the mantle but that is way out of my league. Geomorph?
Location: Really deep in the heart of South California Gender:
Posted:
May 4, 2024 - 2:17pm
NoEnzLefttoSplit wrote:
hmm.. not really into this doomsday hype stuff. Yes it will happen one day, somewhere.. but we are but ants scurrying around on the land before a landslide. Our lifetimes are so short in a geological time frame.
that was point 1.
Point 2, global impacts are kind of unusual, unless you go looking for a PT boundary type thing.. I actually wrote an article on this kind of thing once. (No my name is not Carl.. that was just the site administrator who posted it, my signature is at the bottom)
Good article. "we are but ants scurrying around on the land before a landslide."
My argument all along.
Thinking that we ants can affect the climate on this earth is pushing a awful big product.
Or making lots of money for certain people for a cause that seems like a candle in the wind.
Location: Really deep in the heart of South California Gender:
Posted:
May 4, 2024 - 2:10pm
miamizsun wrote:
forget about everything else
let's talk about something that really matters-the end of the world
if you like dulcet toned apocalyptic narration this IS for you!
The United States has it's own "Supervolcano" sites.
Scott's from Wy. backyard... Yellowstone.
And the Long Valley Caldera in the upper Owens Valley, California... https://en.wikipedia.org/wiki/...
It's one of the largest calderas on earth. Where they actually had a volcano alert warnings back in 1980.
Property values plummeted in Mammoth Lakes, California around that time.
forget about everything else
let's talk about something that really matters-the end of the world
if you like dulcet toned apocalyptic narration this IS for you!
hmm.. not really into this doomsday hype stuff. Yes it will happen one day, somewhere.. but we are but ants scurrying around on the land before a landslide. Our lifetimes are so short in a geological time frame.
that was point 1.
Point 2, global impacts are kind of unusual, unless you go looking for a PT boundary type thing.. I actually wrote an article on this kind of thing once. (No my name is not Carl.. that was just the site administrator who posted it, my signature is at the bottom)
forget about everything else
let's talk about something that really matters-the end of the world
if you like dulcet toned apocalyptic narration this IS for you!
R_P wrote: Back in the day when I was still active at the site, a guy at volcano cafe crunched a shit-ton of seismic data to see if there was any synchronicity between earthquakes and moon phases. He found none at all. Possibly there is some effect on the mantle but that is way out of my league. Geomorph?
"Bake tectonic plates at 2000 C for 250,000 to 350,000 years until puffed and golden brown, and a toothpick inserted in the center comes out clean." ~manbird
I bake my bread I burn my oil I bend to the burning soil
A big driver of subduction (and plate motion) is derived from density differences of oceanic plates. Older ones are more dense than young ones and tend to sink into the asthenosphere. That's the simple model. The basic convection model doesn't completely answer the question.
"Bake tectonic plates at 2000 C for 250,000 to 350,000 years until puffed and golden brown, and a toothpick inserted in the center comes out clean."
So the convection is caused by gravitational forces?
A big driver of subduction (and plate motion) is derived from density differences of oceanic plates. Older ones are more dense than young ones and tend to sink into the asthenosphere. That's the simple model. The basic convection model doesn't completely answer the question.
