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The area with high radioactivity.. The molten walls. Its not just one town there are many...
originally posted by: the2ofusr1
a reply to: Miracula2
As for being in jail well the system we have today puts people who are not guilty in while at the same time let guilty people go free .
originally posted by: Phage
a reply to: punkinworks10
By what mechanism would an impact increase 14C levels?
originally posted by: Phage
a reply to: punkinworks10
By what mechanism would an impact increase 14C levels?
We note that all the assumptions made here tend to underestimate the comet’s size and mass. For example, any composition other than considered here, of the comet would only lead to a less effective production of 14 C and accordingly to the bigger size / mass required. Thus, the present estimate is a conservative lower bound. Thus, the hypothesis of a cometary impact bringing additional radiocarbon to the atmosphere in ca. 773 AD 62 (Liu et al., 2014) is proven invalid, and the solar origin of the event (Usoskin et al., 2013; Cliver et al., 2014) remains the most plausible explanation.
originally posted by: raymundoko
a reply to: purplemer
None of that is in the mahabharata. What was your source for that?
originally posted by: theantediluvian
Methuselah, a nearly 5,000 year old bristlecone pine, the second oldest known. Image source.
An international team of researchers from universities in Japan, the US and Switzerland have discovered evidence that indicates a heretofore unknown solar phenomenon having taken place in 5480 BC. The evidence comes from anaylsis of carbon-14 levels in specimens taken from the rings of a bristlecone pine, a member of an extraordinarily long-lived triad of tree species.
Like other organisms, trees take in carbon-14 from the atmosphere. What makes trees particularly useful as a record of atmospheric concentrations of carbon-14 is the growth rings which contain different levels of carbon-14 from ring to ring, year to year, reflecting those concentrations.
As you can see in the below image, carbon-14 is typically formed in the atmosphere when cosmic rays strike atoms, releasing neutrons that then collide with nitrogen-14 nuclei, knocking out a proton as they're absorbed, transforming nitrogen-14 into carbon-14.
Image source.
What's not clear from the sources that I've found, is which of the species the tree belonged to or where it was located. It seems likely to have been a specimen of Pinus longaeva (the Great Basin bristlecone) which is found in isolated stands in Utah, Nevada and California. Given that the oldest known tree, a specimen of P. longaeva, is 5,066 years old, it stands to reason that the samples originated with a long dead tree. My guess would be that the researchers compared rings in the specimen with those from a living tree were used to establish the date of the felling of the tree from which the samples were taken.
Whatever the case may be, three samples were tested in labs in three universities (on three continents) to confirm the levels of carbon-14 and what they found was the most abrupt increase in carbon-14 in the atmosphere seen, 20% from 5481 BC to 5471 BC.
Daily Galaxy - Sun's Powerful Outburst in 5480 BC --"Most Abrupt Ever"
"We measured the 14C levels in the pine sample at three different laboratories in Japan, the US, and Switzerland, to ensure the reliability of our results," A. J. Timothy Jull of the University of Arizona says. "We found a change in 14C that was more abrupt than any found previously, except for cosmic ray events in AD 775 and AD 994, and our use of annual data rather than data for each decade allowed us to pinpoint exactly when this occurred."
The team attempted to develop an explanation for the anomalous solar activity data by comparing the features of the 14C change with those of other solar events known to have occurred over the last couple of millennia.
"Although this newly discovered event is more dramatic than others found to date, comparisons of the 14C data among them can help us to work out what happened to the sun at this time," Fusa Miyake of Nagoya University says. She adds, "We think that a change in the magnetic activity of the sun along with a series of strong solar bursts, or a very weak sun, may have caused the unusual tree ring data."
I'm sure the fevered imaginations around here could make reasonably good doom porn out of those possible explanations but since this is ATS, why stop with the relatively mundane when there's wild-eyed speculation to be had?
In the 20th century, mankind found a way to substantially ramp up the production of carbon-14 in the atmosphere — nuclear bombs! I'm not saying the spike in C14 was a consequence of hostilities between waring factions of extraterrestrials... but I'm not saying it wasn't either!
On a serious note though, I am curious as to what the other effects on the Earth would have been, what of those would be readily perceptible to humans living at that time (intense auroras, visible much much further from the poles?) and what the results of those observations might have been? Would they have ascribed to the events some religious significance? Is there some sort of record in petroglyphs or other art?
Interesting stuff to ponder. And before I forget, here's the link to the paper.
Why not make a thread about it or ask him about it .This thread is not about him or that .
Isn't Dr. Dino supposed to be not only charitable but law abiding. Both a written tenets of his faith. He failed to fulfil both. Why proselytize for a faith you do not follow?
originally posted by: AnkhMorpork
If I'm not mistaken there was a CME in the 1800's just before the industrial revolution whereby the aurora borealis could be seen throughout most of the Continental United States.
If this happened again, then it would be lights out on modern civilization as we know it.
Therefore, protecting our electrical grid from a CME or EMF device/bomb, ought to be number one priority. Whoever implements that policy now, would someday be recognized as having saved the world, whether tomorrow or 100 years from now.
originally posted by: stormcell
originally posted by: AnkhMorpork
If I'm not mistaken there was a CME in the 1800's just before the industrial revolution whereby the aurora borealis could be seen throughout most of the Continental United States.
If this happened again, then it would be lights out on modern civilization as we know it.
Therefore, protecting our electrical grid from a CME or EMF device/bomb, ought to be number one priority. Whoever implements that policy now, would someday be recognized as having saved the world, whether tomorrow or 100 years from now.
There was one in 1989 . It took out the power grid in the Eastern USA and Canada. It was possible to hear Norwegian FM stations in Aberdeen, Scotland (96.2FM) and around midnight there was a green plus shaped Aurora in the opposite point to the Sun.