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Milankovitch cycles |
Also found in: Wikipedia, Hutchinson | 0.04 sec. |
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Milankovitch cycles [mē·lən′kō·vich ‚sīk·əlz] (geophysics) Periodic variations in the earth's position relative to the sun as the earth orbits, affecting the distribution of the solar radiation reaching the earth and causing climatic changes that have profound impacts on the abundance and distribution of organisms, best seen in the fossil record of the Quaternary Period (the last 1.6 million years). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Weedon demonstrates the applicability of time series analysis to a wide temporal range of palaeoenvironmental data ranging from annual to Milankovitch cycles. Leg 108 scientists think they see evidence for Milankovitch cycles with periods of 20,000 to 40,000 years. Alayne Street-PErrott of Oxford University in England conclude that Milankovitch cycles have been largely responsible for changes in the levels of tropical lakes in the Northern Hemisphere. |
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