Search results
Results from the WOW.Com Content Network
The Younger Dryas (YD, Greenland Stadial GS-1) [2] was a period in Earth's geologic history that occurred circa 12,900 to 11,700 years Before Present (BP). [3] It is primarily known for the sudden or "abrupt" cooling in the Northern Hemisphere, when the North Atlantic Ocean cooled and annual air temperatures decreased by ~3 °C (5.4 °F) over North America, 2–6 °C (3.6–10.8 °F) in Europe ...
The Younger Dryas impact hypothesis (YDIH) proposes that the onset of the Younger Dryas (YD) cool period at the end of the Last Glacial Period, around 12,900 years ago was the result of some kind of cosmic event with specific details varying between publications. [1]: Sec 1 The hypothesis is widely rejected by relevant experts.
However, the Younger Dryas cold period has been linked to flood water diversion from Lake Agassiz. Water that normally flowed through the Mississippi River to the Gulf of Mexico was re-routed into the Great Lakes and the St. Lawrence River about 12.8 ka calendar years ago. [13]
That interrupted the thermohaline circulation, creating the brief Younger Dryas cold epoch and a temporary re-advance of the ice sheet, [6] which did not retreat from Nunavik until 6,500 years ago. After the end of the Younger Dryas, the Laurentide Ice Sheet retreated rapidly to the north, becoming limited to only the Canadian Shield until even ...
Early Lake Erie; 11,800 – 8,700 YBP in Ohio, Ontario, Michigan, Pennsylvania, and New York and located in the Erie basin [1] Lake Lundy; 2,000 YBP [7] in Ohio, Ontario, Pennsylvania, and New York; Lake Elkton stage of Lake Lundy @ 620 feet (190 m) above sea level [7] Lake Dana stage of Lake Lundy @ 590 feet (180 m) above sea level [7]
This glaciation radically altered the geography north of the Ohio River, ... Younger Dryas – Time period c. 12,900–11,700 years ago with Northern Hemisphere ...
As cleanup efforts continue in the wake of deadly and catastrophic flooding that struck Kentucky in late July, leaving many without power or running water, rounds of downpours are expected to move ...
Postglacial Sea level Rise Curve and Meltwater Pulses (MWP) Meltwater pulse 1B (MWP1b) is the name used by Quaternary geologists, paleoclimatologists, and oceanographers for a period of either rapid or just accelerated post-glacial sea level rise that some hypothesize to have occurred between 11,500 and 11,200 years ago at the beginning of the Holocene and after the end of the Younger Dryas. [1]