Posted on 05/26/2024 9:07:15 AM PDT by SunkenCiv
In 5,259 BC, our planet was bombarded with a shower of highly energetic particles resulting from a rare cosmic event of exceptional magnitude. Initially revealed through the discovery of carbon isotopes measured in ancient tree ring data, the event produced a roughly two percent increase in atmospheric Carbon-14 (14C), making it one of the strongest events of its kind known to scientists...
The breakthrough relied on the combination of annual growth ring measurements with the measurable spike in cosmogenic radiocarbon that occurred during the 5259 BC event. This allowed them to establish a chronological reference point for producing accurate dates for the historic settlement, which now may significantly aid archaeological dating at other sites in Southeast Europe...
In 2022, researchers discovered a pair of extreme solar energetic particle (SEP) events by employing carbon isotope measurements in ancient tree rings dated to 7176 and 5259 BC. Each of the events yielded an increase in 14C of about 2%, a relatively small percentage, albeit one indicating events of far greater magnitude than all similar events previously observed...
Since the observational record is too short to provide an accurate estimation of the frequency of extremely rare SEP events, scientists look for the presence of radionuclides like 10Be, 14C, and 36Cl, all of which can be produced when cosmic rays strike Earth's atmosphere—to help them reconstruct a clearer picture of past solar activity and highly energetic events like the one that occurred in 5259 BC...
Japanese physicist Fusa Miyake revealed that cosmic rays originating from solar flares resulted in spikes in radionuclides, specifically the presence of 14C content found in tree rings.
(Excerpt) Read more at thedebrief.org ...
The rest of the Beryllium-10 keyword, sorted:
The other GGG topics added since the previous digest ping, alpha:
Yes, all very interesting but what DAY in 5259 BC? What time? This is no good without precision.
that’s funny, right there!
Could the recent solar events have caused overhead power lines to hum? It lasted for a week or three and then stopped.
That`s why trees are radioactive to this very day.
TTIUWP From the period (s)
I have a white oak in my back yard that’s getting mighty upity.
I have 20 large oaks and another 10 smaller ones. And 13 hickory. Hmmm....
It’s too bad Joe Biden’s dementia is so advanced. He’s probably the only one still alive old enough to remember the event.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.
