National Geographic

Digit · Post by **Digit** » Thu Mar 01, 2007 10:10 am

I must have missed something. What's Indonesia got to do with it Marduk?
Unless the theory has changed since I first heard of it the HSS remnant was in Africa!
Fecking miles away like HSN.

marduk · Post by **marduk** » Thu Mar 01, 2007 10:18 am

do you know where Mt Toba is Roy ?
http://volcano.und.edu/vwdocs/vw_hypere ... /toba.html

Digit · Post by **Digit** » Thu Mar 01, 2007 10:28 am

Well unless they've moved it since I first heard the theory it's in Indonesia, and like you/I said, fecking miles away from HSS and HSN!
So why reduce HSS numbers but not HSN?

marduk · Post by **marduk** » Thu Mar 01, 2007 10:36 am

because it affected the entire world with the greatest devastation centered around indonesia
anyone not smart enough to get the feck out of dodge was gonna have a bad time over the next few millenia in that region

Forum Monk · Post by **Forum Monk** » Thu Mar 01, 2007 10:48 am

It don't make sense.

1. How would they know were to go? Hey boys head to europe, things are getting ugly in paradise.

2. Like you said, it affected the whole world. And I think efter a year or so the distribution of dust, SO2, etc would have been uniform. So Dodge was pretty much everywhere.

Cognito · Post by **Cognito** » Thu Mar 01, 2007 10:52 am

From what I understand the Mt. Toba nuclear winter lasted about 6 years and affected everything and everyone on the planet. As far as surviving species, you can count HSS, HSN and a small number of HE. Life for a while must have been crap.

HSS bottlenecked in Africa, HSN bottlenecked in Europe and HE bottlenecked in Southeast Asia. HSN was gone by 24,000bp while HSE disappeared sometime between 53-28,000bp (except H Florensis which is dubiously claimed as a diminutive HE).

HSN was a cold-adapted species while HSS and HE were not. The headlice data indicates that a species survived the Toba eruption in the Americas or Australia, possibly HE. By "clearing the decks" a small population of HSS was able to successfully span out in all directions from Africa and outbreed the rest of the world. Here's a nice, serene picture of Lake Toba. That is, until it blows again!

marduk · Post by **marduk** » Thu Mar 01, 2007 11:05 am

2. Like you said, it affected the whole world. And I think efter a year or so the distribution of dust, SO2, etc would have been uniform. So Dodge was pretty much everywhere.

from the link i posted earlier

About 800 km3 was ignimbrite that travelled swiftly over the ground away from the volcano destroying everything in its path, and the remaining 2,000 km3 fell as ash

how much ground do you reckon 800 cubic kilometres would cover

Cognito · Post by **Cognito** » Thu Mar 01, 2007 11:21 am

how much ground do you reckon 800 cubic kilometres would cover

Hmmm ... the cubed root of 800km3 is 9.28km. So each side was 9.28km or 5.57 miles, or 29,409 feet, basically the size of Everest. That volume of ash would thin out as it disbursed from epicenter leaving about a kilometre behind in the immediate vicinity, but I calculate that it would leave just over a foot of ash halfway around the planet.

Post by **Minimalist** » Thu Mar 01, 2007 11:22 am

From what I understand the Mt. Toba nuclear winter lasted about 6 years and affected everything and everyone on the planet.

Why didn't the mammoth die out then? Six years is a long time to go without eating.

Cognito · Post by **Cognito** » Thu Mar 01, 2007 11:32 am

Why didn't the mammoth die out then? Six years is a long time to go without eating.

Actually, mammoths and any other large fauna. Probably for the same reason that they didn't die off during the height of the LGM. They are a cold-adapted species who do well in those conditions. A nuclear winter doesn't mean that all plant life dies off on the planet. Suffers, yes. Gone, no. The increased SO2 in the air is reflective, but doesn't block all sunlight. It's the initial cloud cover and haze that results in darkness, but that passes quickly. The increased SO2, being reflective, blocks enough sunlight to plummet temperatures worldwide. IMO it was the extreme cold and poor weather conditions that drove HSS to the verge of extinction. However, mammoths might find those conditions quite liveable.

PS Please send me the program, I'd like to view it. Thanks!

Post by **Minimalist** » Thu Mar 01, 2007 11:54 am

I just sent it but I'm getting some funny feedback from Pando. Can anyone tell me if they received the whole file?

It seems to be saying that it did not transmit but I get a copy and it is all there. Of course, the file is on my system so it could just be reading from the hard drive.

marduk · Post by **marduk** » Thu Mar 01, 2007 11:54 am

Hmmm ... the square root of 800 is 28.28. So, 28 kilometres square

lol so youre assuming that the ground area was covered to a depth of one kilometre
thats gonna be pretty disastrous to any life in the 28 square kilometre area huh

Forum Monk · Post by **Forum Monk** » Thu Mar 01, 2007 12:00 pm

Good work Marduk. Seems you listened in math class after all. So stop claiming you didn't.

Forum Monk · Post by **Forum Monk** » Thu Mar 01, 2007 5:19 pm

Min,
Don't take down your Toba movie. I am still downloading and there seems to be some difficulty.

Post by **Minimalist** » Thu Mar 01, 2007 5:29 pm

I was going to try it again, later.

For whatever reason, the transmission stopped this morning.

Archaeologica.org

National Geographic

Toba

Math Lesson

Mammoths