Clue from nature 1561 BC 📍 Greenland and Antarctic ice cores

Ice cores: 1561-1550 BC was the busiest volcanic stretch of 1680-1500 BC (four eruptions in 12 years), and 1561 BC is the 2022 best guess for Thera

Pearson et al. 2022 Table 2 (Greenland and Antarctic sulfate, dated by the bristlecone frost rings of 1653 and 1627 BC): 1586 BC (10 Tg S, northern high latitude), 1573 (2, southern), 1561 (22, two-pole, northern-weighted; 'evidence presented in this study appears to best converge on the 1561 BCE sulfate for Thera'), 1558 (10), 1555 (6), 1550 (17, southern), 1539 (6). Only 1654 (50) and 1628 (Aniakchak, 52) were bigger in the window. The 1989 JPL work matched Jie's omens to the Greenland acid layer then dated 1645 BC, which is now dated 1628 BC and given to Aniakchak in Alaska.

How it connects

This clue from nature supports this hunch The early books remember failed harvests, mixed cold and heat and a five-year drought at the Xia's end; the ice cores show four eruptions in 1561-1550 BC, about when Erlitou ended four eruptions 1561-1550 BC

This clue from nature is a clue for Why did the Xia dynasty fall (about 1600 to 1530 BC), and do the omens told of its end remember a real eruption?

This clue from nature we read it in Pearson, Sigl and others 2022, Geochemical ice-core constraints on the timing and climatic impact of Aniakchak II (1628 BCE) and Thera (Minoan) volcanic eruptions, PNAS Nexus 1(2) pgac048 (Table 2: all sulfate events 1680-1500 BCE)

This clue from nature came from this step Started the end of the Xia: the Bamboo Annals' 'three suns' lands on the 1561 BC eruption, but only by chance