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Lecture_3 - • By 2009 the south-eastern lake had...

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8/27/2011 1 GEOL 1014 Lecture 3, 8/26/2011 Earth Systems System A system is a group of interacting, interrelated, or interdependent parts that together form a group Mississippi River
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8/27/2011 2 Aral Sea Was one of the four largest lakes in the world with an area of 68,000 square kilometers (26,300 sq mi) The Aral Sea has been steadily shrinking since the 1960s after the rivers that fed it were diverted by Soviet Union irrigation projects. By 2007 it had declined to 10% of its original size, splitting into four lakes the North Aral Sea, the eastern, the western, and one smaller lake between North and South
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Unformatted text preview: • By 2009, the south-eastern lake had disappeared and the south-western lake retreated • The maximum depth of the North Aral Sea is 42 m (138 ft) (as of 2008). 8/27/2011 3 Aral Sea Aral Sea Residence Time 8/27/2011 4 Examples of residence times for water in hydrosphere reservoirs • In the atmosphere, 9 days • In streams and rivers, 17 days • In groundwater, 330 years • In oceans 2900, years Geosphere Solid Earth Origin: Nebula 8/27/2011 5 Mercury, Venus, Earth, Mars (Rocky Planets) Jupiter, Saturn, Uranus, Neptune (Large Gaseous Planets) 8/27/2011 6 8/27/2011 7...
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Lecture_3 - • By 2009 the south-eastern lake had...

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