The year 660 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 94 Ab urbe condita. The denomination 660 BC for this year has been used …

A Miyake event is an observed sharp enhancement of the production of cosmogenic isotopes by cosmic rays.It can be marked by a spike in the concentration of radioactive carbon isotope 14 …

2024年8月23日 · The timing of the ca. 660 BCE Miyake event remains undefined until now. Here, we assign its occurrence to 664–663 BCE through new radiocarbon measurements in …

2020年1月20日 · In this study, to elucidate the rapid increase in 14 C concentrations in tree rings around 660 BCE, we have precisely measured the 14 C concentrations of earlywoods and …

ca. 660 BCE was confirmed with high-resolution 10BE records of three ice cores from Greenland in 2019 14. The study assessed the very hard energy spectrum and proton fluence of the …

The arctic tree rings contain the most accurate account of the 664-663 BCE solar energetic particle event. They identified the timing and confirmed the unusual dynamic of this two-year …

Extreme solar energetic particle events, known as Miyake events, are rare phenomena observed by cosmogenic isotopes, with only six documented. The timing of the ca. 660 BCE Miyake …

2020年1月20日 · In this study, to elucidate the rapid increase in 14 C concentrations in tree rings around 660 BCE, we have precisely measured the 14 C concentrations of earlywoods and …

2024年8月23日 · 14 C signature in tree rings of northern Eurasia with double-pulse cosmic radiation signal and unusual cosmogenic isotope production suggests the Miyake event of 660 …

2023年2月26日 · Here, we develop this approach further and present a systematic reconstruction of integral fluences (event-integrated fluxes) for four ESPEs: 994 CE, 775 CE, 660 BCE, and …