Lecture24 - Gary Larsens Far Side http/www.boulder.swri.edu/clark/chance/48twice Running Water Water reservoirs on Eearth Figure 16.2 Hydrologic

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Gary Larsen’s “Far Side” http://www.boulder.swri.edu/clark/chance/48twice.jpg
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Running Water
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Water reservoirs on Eearth Figure 16.2
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Hydrologic cycle ¾ Hydrologic cycle is a summary of circulation of Earth’s water supply ¾ Processes involved in the hydrologic cycle Precipitation Evaporation Transpiration Infiltration Runoff Evapotranspiration = precipitation
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Life of a rain-water droplet 1) It can be intercepted during its fall by trees / vegetation (very important to help prevent soil erosion) 2) After reaching the land surface, it either infiltrates to the subsurface or flows on surface (sheetflow) Infiltration capacity is controlled by Intensity and duration of rainfall Prior wetted condition of soil Soil texture Slope of the land Type of land cover Sheetflow develops into tiny channels called rills (infiltration reduced by compaction from plowing and formation of hydrophobic layer due to severe forest fires) http://www.eng.iastate.edu/compost/images/largeimages/lg-rill.jpg
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This note was uploaded on 04/18/2011 for the course EAS 101 taught by Professor Kirschner during the Spring '11 term at Saint Louis.

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Lecture24 - Gary Larsens Far Side http/www.boulder.swri.edu/clark/chance/48twice Running Water Water reservoirs on Eearth Figure 16.2 Hydrologic

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