774–775 carbon-14 spike is an observed increase of around 1.2% in the concentration of the radioactive carbon-14 isotope in tree rings dated to 774 or...

993–994 carbon-14 spike was one of only a few well-documented 14C events. There had been a considerably larger one, the 774–775 carbon-14 spike, which...

Beryllium-10 can thus serve as a marker of Miyake events, such as the 774-775 carbon-14 spike. There can be an effect on climate (see Homeric Minimum). Surface...

such as dendrochronology, tephrochronology, and varve chronology. 774–775 carbon-14 spike Chronological dating, archaeological chronology Absolute dating...

Stars portal Outer space portal Solar System portal Science portal 774–775 carbon-14 spike A-index K-index Miyake event Nuclear electromagnetic pulse Kimball...

Carbon-14, C-14, 14C or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Its presence in organic...

occurs around 773, in coral skeletons from the South China Sea (see 774-775 carbon-14 spike). Battle of Berzitia: The Bulgarian ruler (khagan) Telerig sends...

occurs around 773, in coral skeletons from the South China Sea (see 774-775 carbon-14 spike). Duan Wenchang, chancellor of the Tang Dynasty (d. 835) Fujiwara...

CME. The region also caused an S1 solar radiation storm with spikes reaching S2. On 14 May, as the most active region 3664 rotated beyond the sun's western...

bivalves that lived on the surface. A case has been made that the 774–775 carbon-14 spike was the result of a short GRB, though a very strong solar flare...

strongest known solar storm (774–775 carbon-14 spike) with its documented red skies, the exceptionally cold summer of 775 CE which affected crop yields...

князь Монако осмотрели место раскопок крепости Порт-Бажын Archived 2012-07-14 at archive.today, 13-08-2007, РИА Новости, accessed 2010-06-17. More photographs...

isotopes by cosmic rays. It can be marked by a spike in the concentration of radioactive carbon isotope 14 C in tree rings, as well as 10 Be and 36 Cl in...

Expressway Miyake (surname) Miyake Event, or 774–775 carbon-14 spike, and other exceptional carbon-14 spikes Miyake-daiko, a style of Japanese taiko drumming...

evolution, the Younger Dryas impact hypothesis, the effects of the 774-775 carbon-14 spike and its association with a solar flare, and the Tunguska event...

660 BCE 774–775 CE This extreme solar proton event is the first identified Miyake event. It caused the largest and most rapid rise in carbon-14 levels...

1016/j.jhevol.2019.102645. PMID 31537304. S2CID 202701691. Marshall, Michael (14 May 2011). "Crocodiles swam the Atlantic to reach America". New Scientist...

Kentaro; Masuda, Kimiaki; Nakamura, Toshio (14 June 2012). "A signature of cosmic-ray increase in AD 774–775 from tree rings in Japan". Nature. 486 (7402):...

Further constraints on the date were obtained when the major 774-775 CE carbon-14 spike (Miyake event) was identified in one of the tree stumps felled...

2019-12-11. Harrison, James. "Reactions: Hydrogen hype". Chemical Engineer. 58: 774–775. Archived from the original on 2021-02-08. Retrieved 2017-08-31. Rizzi...

in 774–775 and 993–994, can provide fixed reference points in an unknown time sequence as they are due to cosmic radiation. As they appear as spikes in...

(7001): 772–775. Bibcode:2004Natur.430..772E. doi:10.1038/nature02699. PMID 15306807. S2CID 4404887. Archived (PDF) from the original on July 14, 2020. (Erratum: doi:10...

of Terror". PBS. September 7, 2016. "School of the Future". PBS. September 14, 2016. "Great Human Odyssey". IMDb. October 5, 2016. Retrieved November 1...

case fatality rates of COVID-19". The Lancet Infectious Diseases. 20 (7): 774–775. doi:10.1016/s1473-3099(20)30246-2. PMC 7270730. PMID 32243815. "Global...