how is the antarctic important for identifying how the Earth has changed over hundreds of thousands of years?
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Paleoclimatology
(March 2015) Click show] for important translation instructions. ... It uses a variety of proxy methods from the Earth and life sciences to obtain data ... yielded data going back several hundred th... |
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Ice Core 101 - Climate Change Institute
Large peaks in sulfate ( SO42-) can be used to identify input from volcanic sources. ... used “dating horizon” that has been found in ice cores around the Earth. ... dated reconstructions of past temperatures over hundreds of thousandsof years. ... A glacial period is an interval of time (~100 thousand years) that is marked by ... .. |
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Sea level and coastal changes | Climate change | Discovering ...
Geology has left us many clues to how the environment has changed over time ... used to identify whether the sea level has changed and also the height of the land ... It is important to realise that when earth scientists talk about a rise in mean ... relatively quickly, taking tens of thousands to hundreds of thousands of years. |
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The Earth's Climate in the Past | A Student's Guide to Global Climate ...
For hundreds of thousands of years, the concentration of carbon dioxide in the ... These clues tell us that the Earth's climate has changed many times before. ... Over at least the last 650,000 years, temperatures and carbon dioxide levels in ... These graphs are based on the Vostok ice core from Antarctica. |
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Ice Cores That Tell The Past - GISP2 - University of New Hampshire
The sun and all the parts of the Earth - the oceans, the atmosphere, the land ... While long ice core records exist from Antarctica, fewer comparable records ... the cessation of this circulation also has important implications for CO2 in the atmosphere. ... While periods of hundreds to thousands of years might be resolved in a ... .. |
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Human Impacts on Antarctica and Threats to the Environment ...
For more than a hundred years people have travelled to Antarctica and most parts have ... Recently attitudes have changed as we begin to realise that there are few ... places left on earth and that they are tremendously important to humanity. ... the ozone hole that has appeared over Antarctica for over 30 years, chemicals ... |
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Will there ever be a 2nd ice age? - Physics Forums
The Earth has been in an interglacial period known as the Holocene for more ... of the Pleistocene epoch, because the Greenland and Antarctic ice sheets still exist. ... climate transitions during the last few hundred thousand years. ... . The following graph shows how planetary climate has changed over the ... |
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Teaching Notes - SERC
The multinational ANtarctic geological DRILLing (ANDRILL) team of over 200 ... There, they drilled through several hundred feet of ice and ocean water to reach the ocean floor. Then ... The Earth's climate has changed dramatically over time. ... in geologic time scales—tens of thousands to millions of years. |
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Climate's changed before - Skeptical Science
But there have been several times in Earth's past when Earth's temperature jumped ... So yes, the climate has changed before humans, and in most cases ... .. However, it is unable to explain the long term warming trend over the past ... But more so, because the change which took hundreds, perhaps thousands of years then ... |