Posted on 07/15/2018 11:22:34 PM PDT by SunkenCiv
A research team led by Woods Hole Oceanographic Institution (WHOI) found the fingerprint of a massive flood of fresh water in the western Arctic, thought to be the cause of an ancient cold snap that began around 13,000 years ago... The cause of the cooling event, which is named after a flower (Dryas octopetala) that flourished in the cold conditions in Europe throughout the time, has remained a mystery and a source of debate for decades. Many researchers believed the source was a huge influx of freshwater from melting ice sheets and glaciers that gushed into the North Atlantic... However, geologic evidence tracing its exact path had been lacking. In 2013... aboard the U.S. Coast Guard Cutter Healy, the team gathered sediment cores from along the continental slope east of the Mackenzie River. After analyzing the shells of fossil plankton found in the sediment cores, they found the long sought-after geochemical signal from the flood. "The signature of oxygen isotopes recorded in foraminifera shells preserved in the sediment allowed us to fingerprint the source of the glacial lake discharge down the MacKenzie River 13,000 years ago," said co-principal investigator Neal Driscoll, a professor of geology and geophysics at Scripps Oceanography. "Radiocarbon dating on the shells provided the age constraints. Circulation models for the Arctic Ocean reveal that low-salinity surface water is efficiently transported to the North Atlantic. How exciting it is when the pieces of a more than 100-year puzzle come together."
(Excerpt) Read more at phys.org ...
It's only logical if the shifts can be shown to gradually change climate, or if a sudden shift caused a radical change in climate.
Large catastrophic flooding events have been a problem from time to time, and in the time of humans on the Earth, a category in which belongs both the separation of Britain from Eurasia (see above), and the Younger Dryas flood event(s), and the Skoregga landslide tsunami. There are plenty of topics about all three on FR, best to try surfing the keywords.
Time Team Special 51 (2013) - Britain's Stone Age Tsunami
Storegga Landslide & Tsunami.mov
I always heard that they assumed it was freshwater outflow from the Saint Lawrence river (what little there was of it, covered with ice) and a subsequent ice dam along Newfoundland and Nova Scotia burst.
The Mackenzie River just seems to far away.
Note the Mackenzie River way over to the Northwest on this map. Almost outflows in Alaska.
Heh.
I was gonna post that to you.
I still think that the deep bowl in the ocean floor off the south west corner of Ireland is a massive plunge pool.
:^) It is said, and said truly, of the hero Finn McCuil, that if one day goes by without his name being mentioned, the world will come to an end...
It’s all one world ocean; as long as the event left evidence, that’s what happened. :^)
Thank you for your post. The post was informative and accurate. Once more thank you
No, that’s NOT all that is being discussed in the article — it tries to tie YD to present day patterns, and my point is that the situation today is nothing like that which preceded YD.
If anyone doubts this, read the full article again...
Okay, thanks.
Ok here, too. Hope I didn’t sound too grouchy. Just found a bad infestation of bedbugs at my elderly Mom’s house. Probably came in with one of the sitters. Really nasty problem, and my wife and I are already overwhelmed with the care and financial problems associated w/ Mom’s care...
Have a great rest of the week & weekend!
Bedbugs are the worst. They only need to eat once in two years, so they're difficult to bait and poison. The institutional way of dealing with them (this has happened where work) is to fumigate and tape the cracks around doors and windows (old school), or to seal it up with a heater and maintain a keep-warm oven temp for 48 hours. Or to put it another way, they suck.
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