everything wrote:what was happening in those times that changed it so dramatically?
it also makes me think of the drought in California and the USA SW
In June 1855, it rained heavily in Henan province. This was, of course, not unusual. The rain poured into the Yellow River, already swollen by seasonal flooding thanks to the snowmelt in the far-off Tibetan Plateau. On June 19, the relentless pressure overwhelmed the levee at Tongwaxiang, near Kaifeng. Within a day, a breach three miles wide released raging muddy waters onto the surrounding plain. The river deposited the silt it had accumulated as it traversed north China, burying whole villages in mud. For weeks, wave after wave of floodwaters laid waste to the area. More than 200,000 people died; seven million lost their homes.
In 1938, Chiang Kai-shek’s retreating army intentionally breached the levees near the site of the 1855 rupture so that the plain would flood in hopes of slowing the Japanese advance. The resulting flood killed an estimated 890,000 people and displaced many millions.
everything wrote:https://thechinaproject.com/2022/06/29/when-the-yellow-river-changes-course/
It sounds like quite a repeated tragedy.In June 1855, it rained heavily in Henan province. This was, of course, not unusual. The rain poured into the Yellow River, already swollen by seasonal flooding thanks to the snowmelt in the far-off Tibetan Plateau. On June 19, the relentless pressure overwhelmed the levee at Tongwaxiang, near Kaifeng. Within a day, a breach three miles wide released raging muddy waters onto the surrounding plain. The river deposited the silt it had accumulated as it traversed north China, burying whole villages in mud. For weeks, wave after wave of floodwaters laid waste to the area. More than 200,000 people died; seven million lost their homes.In 1938, Chiang Kai-shek’s retreating army intentionally breached the levees near the site of the 1855 rupture so that the plain would flood in hopes of slowing the Japanese advance. The resulting flood killed an estimated 890,000 people and displaced many millions.
It's still not clear to me how they "know" the BC era course changes. "Computer models" and "simulations" .... working in "analytics" professionally, we definitely do not "know" such things so precisely with our "models". Maybe there is a lot more physical evidence as well. What a study in humans trying to control water.
Appledog wrote:How do you know the mandate of heaven? Look at where the Yellow River flows.
Interesting idea!
everything wrote:lol, but also yeah, it must be something like that, right? i think there are better technologies for "seeing" further below the surface, too.
but isn't there some gigantic logistical problem to go check all those possible pathways even if you have the tech to "see" and date that material.
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