Geology notes october 27 for exam 3

Geology notes october 27 for exam 3 - Distribution of...

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Geology Milankovitch theory explains how the climate is linked to its orbit -When the earth is further from the sun or is tipped at a steeper angle to the sun it receives less solar energy and is cooler Sunspot and solar energy output also seem to affect the earth’s average temperature. The greenhouse effect also influences the earth’s surface temperature. -Carbon dioxide (cars) -Methane (landfills, animals) -Water vapor Recently the Earth’s average annual temperature has increased About 2% of the Earth’s water is in glaciers -If global warming melted all of this ice sea level would rise ~80 meters
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Unformatted text preview: Distribution of Earths water-Earths water: 97% ocean 3% fresh water-Freshwater: 68% icecaps and glaciers, 30% ground water-Fresh surface water: 87% lakes Warming at the end of the Pleistocene melted continental glaciers and caused rapid sea level rise-Pleistocene 1.6 million to 10,000 years ago-Holocene 10,000 years ago to present-Sea level rose about 120 m in about 8000 yr or 1.5 cm/yr-Presently sea level is rising at a rate of .17 cm/yr. Sea level rise from melting glaciers will inundate coastal areas-There is a high risk of completely flooding New Orleans...
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This note was uploaded on 08/09/2011 for the course GEOS 1004 taught by Professor Aksinha during the Fall '08 term at Virginia Tech.

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Geology notes october 27 for exam 3 - Distribution of...

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