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Evidence of Tunguska-Type Impacts Over the Pacific Basin -circa 1178 CE

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Author Topic: Evidence of Tunguska-Type Impacts Over the Pacific Basin -circa 1178 CE  (Read 150 times)
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« on: June 15, 2007, 10:02:08 pm »

8. Arguments from northern China

The 12th century is a critical time in northern China. From a political point of view the corrupt and decaying regime of the late Song dinasty leads to social unrest and widely spread rebellions, so graphically described in the great Chinese classic novel The Water Margins (probably written later, but there is no consensus on either the author or the time of writing). Northern China was occupied by Juchen tribes from Machuria in the second half of that century. Additionally natural disasters at unprecedented level affected the region, among which main was the flood of the Huang He (the Yellow River). So catastrophical was this flood that the previous northern Song capital, the great city of Kaifeng, was almost completely destroyed and, moreover, the river changed its exit into the sea, moving it in 1194 from a location north of the Shandong peninsula to one south of it, hundreds of kilometers away (the river has returned to its previous exit in 1852 after another severe flood). Whether the natural disasters at this time are a chance event or are correlated with the other observed events, in particular with a possible modification of the typhoon regime and the strong increase of El Niņo, is a question that deserves further study.
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