Sentences with phrase «stadials known»
The chemical tracers also show that circulation slowed almost to a halt during certain stadials known as Heinrich events, when massive amounts of icebergs broke off and drifted away from the Laurentide ice sheet, which covered a large part of North America at the time.
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These are known as interstadial and stadial periods, which occur when glaciers retreat and advance, respectively.
Earlier than that, we know that human migration out of Africa and population were set back during glacials and advanced during stadials.
Each followed a general pattern in the Northern Hemisphere: The cooling happening over hundreds to 1,000 years, then the frigid temperatures persisted for a few hundred years in what is known as a stadial, McManus said.