Lake Agassiz meltwater
نویسندگان
چکیده
منابع مشابه
A subtropical fate awaited freshwater discharged from glacial Lake Agassiz
[1] The 8.2 kyr event is the largest abrupt climatic change recorded in the last 10,000 years, and is widely hypothesized to have been triggered by the release of thousands of kilometers cubed of freshwater into the North Atlantic Ocean. Using a high‐resolution (1/6°) global, ocean‐ice circulation model we present an alternative view that freshwater discharged from glacial Lake Agassiz would ha...
متن کاملPaleotopographic reconstructions of the eastern outlets of glacial Lake Agassiz
Paleotopographic reconstructions of the eastern outlets of glacial Lake Agassiz provide a foundation for understanding the complex manner in which terrain morphology controlled the routing of overflow through the eastern outlets during the lake's Nipigon Phase (ca. 9400-8000 ''^C years BP) and for understanding the causes of outlet-driven declines in lake level during that period. Although flow...
متن کاملReduced North Atlantic deep water coeval with the glacial Lake Agassiz freshwater outburst.
An outstanding climate anomaly 8200 years before the present (B.P.) in the North Atlantic is commonly postulated to be the result of weakened overturning circulation triggered by a freshwater outburst. New stable isotopic and sedimentological records from a northwest Atlantic sediment core reveal that the most prominent Holocene anomaly in bottom-water chemistry and flow speed in the deep limb ...
متن کاملPaleohydraulics of the last outburst flood from glacial Lake Agassiz and the 8200 BP cold event
During the last deglaciation of North America, huge proglacial lakes formed along the southern margin of the Laurentide Ice Sheet. The largest of these was glacial Lake Agassiz, which formed about 11:7 C kyr and drained into Hudson Bay about 7:7 C kyr ð8:45 cal kyrÞ: Overflow from these lakes was variably directed to the Mississippi, St. Lawrence and Mackenzie drainage systems and it is thought...
متن کاملA 300 year record of environmental change from Lake Tuborg, Ellesmere Island, Nunavut, Canada
Lamination thickness measurements in sediments from Lake Tuborg, northern Ellesmere Island, Canada document an increase in high-energy hydrologic discharge events from 1865 to 1962. The timing of these events corresponds with evidence for an increase in the amount of melt on the adjacent Agassiz Ice Cap, as recorded in ice cores. There appears to have been a non-linear change in depositional en...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2006
ISSN: 0096-3941
DOI: 10.1029/2006eo130006