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Andre
Joined: 21 Jul 2007
Posts: 298
Location: Germany - The Nederlands
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 Posted: Mon Aug 06, 2007 8:34 am Post subject: The Younger Dryas exhibits |
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According to Wikipedia, the Younger Dryas is:
| Quote: | | named after the alpine / tundra wildflower Dryas octopetala, and also referred to as the Big Freeze, was a brief (approximately 1300 ± 70 years cold climate period following the Bölling/Allerød interstadial at the end of the Pleistocene between approximately 12,700 to 11,500 years Before Present and preceding the Preboreal of the early Holocene. |
Curious, isn't 12,700-11,500 = 1200 years. But anyway:
| Quote: | | ....The Younger Dryas saw a rapid return to glacial conditions in the higher latitudes of the Northern Hemisphere between 12,900 – 11,500 years before present (BP) in sharp contrast to the warming of the preceding interstadial deglaciation. |
Now it's 12,900 instead of 12,700 all of a sudden. See the exhibit about glaciation why.
| Quote: | | The transitions each occurred over a period of a decade or so. Thermally fractionated nitrogen and argon isotope data from Greenland ice core GISP2 indicates that the summit of Greenland was ~15 °C colder during the Younger Dryas than today. |
Here is the core of the problem, the interpretation of the isotopes in the ice of Greenland. It's wrong. We will demonstrate that other proxies than isotopes to do not support the alleged sudden temperature changes but they do support strong changes in moisture regime. We will demonstrate that this is also in line with the water isotope proxies of the ice cores.
Since the Younger Dryas is the best studied interval in the Pleistocene, it is most suited to perform this detailed analysis. We are introducing a plethora of evidence to judge by anybody who feels to. Feel free to discuss them, and contribute with other hard evidence supporting or countering the alternative ideas
See also
Exhibit #1, The Younger Dryas and the Meerfelder maar
Exhibit #2, The Younger Dryas and Mediterranean region
Exhibit #3, The Younger Dryas and South greenland
Exhibit #4, The Younger Dryas and Glaciation
Exhibit #5, The Younger Dryas and the Mystery interval
Exhibit #6, The Younger Dryas and North America
Exhibit #7, The start of the Younger Dryas
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