Sentences with phrase «glacial period began»
Last glacial period began about 120,000 years ago and end about 15,000 years ago.
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The beginning and end of a glacial period are clearly times of global climate change, but there are also periods of abrupt change in climate patterns within those periods.
As the glacial period drew to a close and temperatures began to rise, there were two final cold snaps.
They compared the carbon - 13 and nitrogen - 15 values in the giant deer bones from the Swabian Alb caves with those of red deer, other giant deer and reindeer, which were living at the beginning and the end of the last glacial period.
The beginning of the last glacial period was characterized in the Northern hemisphere by significant accumulation of snow at high latitudes and the formation of a huge polar ice sheet.
Predicted changes in orbital forcing suggest that the next glacial period would begin at least 50,000 years from now, even in absence of human - made global warming (see Milankovitch cycles).
The history of Scotland is known to have begun by the end of the last glacial period (in the paleolithic), roughly 10,000 years ago.
[1] It began with the end of the cold period known as the Oldest Dryas, and ended abruptly with the onset of the Younger Dryas, a cold period that reduced temperatures back to near - glacial levels within a decade.
(6) The most prominent oscillation — already noticed in glacial moraines in Scandinavia around the turn of the century — had begun with a rise in temperature, named the Allerød warm period.
As the worlds» oldest and most scrutinised instrumental temperature record it usefully covers much of the «Little Ice Age» when the most extensive recent glacial advances in the Holocene began, whilst numerous contemporary records make it possible to examine earlier periods in British climatic history.
This is the period when data retrieved from glacial ice cores show the beginning of a growth in the atmospheric concentrations of several «greenhouse gases,» in particular CO2 and CH4.