E10_CEE_B_Lec02b

E10_CEE_B_Lec02b - 0.013 Fresh 21,830 91,000 0.26 0.007...

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Fundamentals • mass balance • force balance • kinetics
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http://www.pub.gov.sg/annualreport2005/images/Features_mr_NEWater_img.jpg http://www.twanetwerk.nl/upl_images/water.JPG
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How Much Water? http://ga.water.usgs.gov/edu/waterdistribution.html atmosphere 0.05% soil moisture 0.05%
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Water source Water volume, in cubic miles Water volume, in cubic kilometers Percent of fresh water Percent of total water 321,000,000 1,338,000,000 -- 96.5 Ice caps, Glaciers, & Permanent Snow 5,773,000 24,064,000 68.7 1.74 Groundwater 5,614,000 23,400,000 -- 1.7 Fresh 2,526,000 10,530,000 30.1 0.76 Saline 3,088,000 12,870,000 -- 0.94 Soil Moisture 3,959 16,500 0.05 0.001 71,970 300,000 0.86 0.022 Lakes 42,320 176,400 --
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Unformatted text preview: 0.013 Fresh 21,830 91,000 0.26 0.007 Saline 20,490 85,400--0.006 Atmosphere 3,095 12,900 0.04 0.001 Swamp Water 2,752 11,470 0.03 0.0008 Rivers 509 2,120 0.006 0.0002 Biological Water 269 1,120 0.003 0.0001 Total 332,500,000 1,386,000,000-100 Source: Gleick, P. H., 1996: Water resources. In Encyclopedia of Climate and Weather, ed. by S. H. Schneider, Oxford University Press, New York, vol. 2, pp.817-823. http://ga.water.usgs.gov/edu/waterdistribution.html Fundamentals • mass balance • force balance • kinetics Mass Balance Mass Balance Mass Balance Time ? 1 year Units of all terms: [something/time] e.g., $/yr kg/min gal/hr Accumulation = In – Out + Source - Sink...
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E10_CEE_B_Lec02b - 0.013 Fresh 21,830 91,000 0.26 0.007...

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