Mushroom Cloud and Pyroclastic Flow

[Brainster]

I do get the feeling that these folks think that we should be able to pop up for them on YouTube some giant collapse that was not controlled demolition, where there are the "pyroclastic" flows. It's like "Hey, when have you seen a giant building collapse without being controlled demolition?" Uh, never except for 9-11. "You see?"

Let's turn it around; ask them to show us a giant collapse of a building that did not result in dust cauliflower clouds.

 

[realitybites]

1. The smoke rose and expanded (i.e.

I went camping last year. Dad made a campfire. The smoke rose and expanded. I made some smores. I ate the smores. Dad laughs. I ask dad why he laughs. He tells me he started the fire by setting off a thermonuclear device with thermite. I know have three tongues.

Conspiracy.

 

[~enigma~]

I do get the feeling that these folks think that we should be able to pop up for them on YouTube some giant collapse that was not controlled demolition, where there are the "pyroclastic" flows. It's like "Hey, when have you seen a giant building collapse without being controlled demolition?" Uh, never except for 9-11. "You see?"

Let's turn it around; ask them to show us a giant collapse of a building that did not result in dust cauliflower clouds.

Didn't I post a YouTube video of a pyroclastic flow that was from a volcano and not a CD? The woo say a pyroclastic flow is proof positive of a CD. I say the woo have suffered a psychotic break.

 

[Pardalis]

I say the woo have suffered a psychotic break.

Too much JAQing off does that.

 

[Unfit4Command]

Didn't I post a YouTube video of a pyroclastic flow that was from a volcano and not a CD? The woo say a pyroclastic flow is proof positive of a CD. I say the woo have suffered a psychotic break.

If that cloud of dust really was a pyroclastic flow then it's amazing how anyone who couldn't outrun it survived, considering the fact that the gases are usually 500-1000 degrees Celsius inside the flow.

 

[~enigma~]

If that cloud of dust really was a pyroclastic flow then it's amazing how anyone who couldn't outrun it survived, considering the fact that the gases are usually 500-1000 degrees Celsius inside the flow.

IOW a pyroclastic flow would kill you and sterilize you at the same time. As an aside, there was bacteria that actually survived Vesuvius' pyroclastic flow - not many though

If there really was a pyroclastic flow in NYC can we even begin to comprehend the death toll there would have been. On the plus side, the NY truth group and alot of woos wouldn't be around

 

[realitybites]

If that cloud of dust really was a pyroclastic flow then it's amazing how anyone who couldn't outrun it survived, considering the fact that the gases are usually 500-1000 degrees Celsius inside the flow.

..... details.

 

[beachnut]

Seriously, during a collapse, the building is falling down. The source of the smoke is falling down. There will be an area of low pressure in the wake of the falling building, which would, if anything, tend to pull smoke down with it. It would continue to diffuse into the air. Instead, it rises, expands, and maintains a distinct boundry.

Ordinary dust would be expected to be suspended in the air, and fall very slowly. Instead, this dust falls almost as rapidly as solid steel.

Seriously.

Yes, you are seriously challenged on the facts. I expect you have been with Judy and the dustified steel. It is sad you have been beamed by the coma woman. She lost her job, just after she exposed her insanity.

 

[beachnut]

How would we test this "drywall and fireproofing" hypothesis? Could we not get a large steel beam, or some other heavy dense object representing a steel beam, and attach to it some drywall, and/or crushed drywall, and/or fireproofing, and/or crushed concrete and then throw it off a cliff or a building and try to recreate this phenomenon?

Suppose you 9/11 deniers suggest the ideal method, most favorable to recreate dust which falls as fast as steel, and continues to appear as though it is coming out of the steel the entire way down. I think if it is really just some pulverized drywall, this should be easy to recreate.

Since the entire building had tons of drywall attached to the steel columns I wonder how you missed the fact the is two pieces of drywall used as fire protection. That was 1.5 inches of drywall attached to most of the WTC steel. Just like a house that collapses and spews crushed wall board dust all over, so did the WTC. Now the WTC was big because of the energy of stored due to gravity in the building. EACH building had 248 TONS of TNT energy released to do what you saw on 9/11. No test needed, check out the favorite woo wootube video of house collaspe. http://www.youtube.com/watch?v=HRkdD35p-YQ

Dust! More dust

http://www.youtube.com/watch?v=c6fgG9lMpiQ

Oops a pyroclasticplow, of dustified wood.

 

[The Doc]

The dust cloud we saw on 9/11 was a density flow. A density flow is a mixture of debris particles (eg. dust) and air much denser than normal air. Density flows, whether in air or water, can maintain their identity for much longer.

A density flow will run out of momentum over time. Once they lose momentum, they stop moving. The denser parts of the flow will settle out and the lighter parts will mix with the surrounding medium.

Density flows can flow over water, or even in water.

So now we know what did occur within the dust cloud on 9/11, we'll now look at why a pyroclastic surge did not occur. First of all, we must note that Pyroclastic Surges are exclusive to volcanoes and only volcanoes.

The US Geological survey website provides us with a definition of a pyroclastic flow. Let's read it.
http://volcanoes.usgs.gov/Products/Pglossary/PyroFlow.html

“A pyroclastic flow is a ground-hugging avalanche of hot ash, pumice, rock fragments, and volcanic gas that rushes down the side of a volcano as fast as 100 km/hour or more. The temperature within a pyroclastic flow may be greater than 500° C, sufficient to burn and carbonize wood. Once deposited, the ash, pumice, and rock fragments may deform (flatten) and weld together because of the intense heat and the weight of the overlying material.”

Emphasis Mine
​

So we are supposed to believe the cloud created by the collapse of both WTC's was moving over 100km/h and had temperatures sufficient to carbonize wood? We're talking a dust cloud that would have been over 500°C moving through New York City and causing no damage what-so-ever.

The dust cloud was described as hot, but that was by people in the middle of it. That rules out the 500°C option. Quite simply, no one anywhere near the World Trade Center complex would have survived a pyroclastic surge floating over them. But what about speed? The dust cloud was slowly moving. So that rules out the 100km/h option. Not looking good for the Pyroclastic Surge case at all is it?

 

[MRC_Hans]

Not that this will make any difference for TS1+2=4, but for the proverbial lurkers, and just so he can't truthfully say nobody answered him:

The point is to get you JREFs to agree that:

1. The smoke rose and expanded (i.e. mushroomed)

Smoke usually does. However, the distinct mushroom cloud just after the collapse is probably dust raising on the warm air, partly from the fires, partly from heat generated during the collapse.

2. The dust that fell was very dense

Depends on what you mean by dense. People were in there, breathing the stuff, and surviving it (we still don't know the long-term effects). It was dense enough that most the clouds settled within about 15 minutes.

3. The dust that fell behaved as a fluid,

A fluid? Show us one example of a fluid producing convection clouds in air. (Not an aerosol, a fluid).

and was pressurized

Obviously, there was an over-pressure. Otherwise, it would not have spread. DO I need to explain to you where the pressure came from? (hint: About 1.7 million cubic metres of air had just been expelled from the collapsing building)

Hans

 

[MRC_Hans]

.

Ordinary dust would be expected to be suspended in the air, and fall very slowly. Instead, this dust falls almost as rapidly as solid steel.

Haha. There are plenty of pictures with solid steel AND dust falling at the same time. Please how us one where the dust falls almost as rapidly as the steel.

Ordinary dust? Who says it was ordinary dust? How ordinary is the dust from a collapsing skyscraper?

Hans

 

[gumboot]

The point is to get you JREFs to agree that:

1. The smoke rose and expanded (i.e. mushroomed)

No it didn't. If it rose, moments after the collapse there would be a big mushroom cloud over New York. There wasn't.

2. The dust that fell was very dense

How do you define "very dense"? I would say it was less dense than water, which has a density of 1. Would you consider water very dense?

3. The dust that fell behaved as a fluid, and was pressurized

I don't know what you mean by "was pressurized" but dust clouds ARE a fluid, so it's really no surprise if that behave like one.

-Gumboot

 

[The Doc]

TwoofSeeker1234
Instead, this dust falls almost as rapidly as solid steel.

Twoofseeker1234
The point is to get you JREFs to agree that:

1. The smoke rose and expanded (i.e. mushroomed)

The mushroom cloud does not go down, it goes up and expands.

See my point?

 

[Belz...]

Summary: it looks like something, therefore it MUST be that thing.

 

[Stellafane]

As usual, I have nothing of substance to add to this discussion. (Even at my best -- or most fevered -- I'd be hard pressed to compete with "cauliflower clouds.") But I thought I'd just check in to say that this may well be the single most insane thread I've seen in this forum. Which, considering the competition, is really saying something.

 

[Belz...]

Seriously, during a collapse, the building is falling down. The source of the smoke is falling down. There will be an area of low pressure in the wake of the falling building, which would, if anything, tend to pull smoke down with it.

...Er... No. No it wouldn't.

It would continue to diffuse into the air. Instead, it rises, expands, and maintains a distinct boundry.

Like most dust clouds this size.

Ordinary dust would be expected to be suspended in the air, and fall very slowly. Instead, this dust falls almost as rapidly as solid steel.

So is it rising or falling ?

Seriously.

 

[Belz...]

How would we test this "drywall and fireproofing" hypothesis? Could we not get a large steel beam, or some other heavy dense object representing a steel beam, and attach to it some drywall, and/or crushed drywall, and/or fireproofing, and/or crushed concrete and then throw it off a cliff or a building and try to recreate this phenomenon?

No, hey. I got it. Maybe we could make something with chicken wire and...



Oh, right.

 

[Pipirr]

I have no idea what this is about.

Something to do with gravity? Being turned off by a death ray?

Or a volcano?

Like in that one movie?

 

[Horatius]

I have no idea what this is about.

I could try to explain it at the next Ottawa get together. We'll need beer. Lots of it. Take a cab