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G101_05_HydrologicCycle

G101_05_HydrologicCycle - Hydrologic Cycle 1 2 3 4 5 6 7...

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1 Hydrologic Cycle 1. Distribution of water 2. Hydrologic cycle model 3. Water phase change 4. Surface water environment 5. Groundwater 6. Atmospheric water and humidity 7. Clouds Distribution: land & water hemispheres Distribution: ocean & freshwater Hydrologic cycle model: terms Precipitation: rain, snow, sleet, hail Evaporation: phase change of water to water vapor Transpiration: the movement of water vapor out from the pores of leaves Advection: horizontal movement of air or water from one place to another Runoff: surplus surface water after soil is saturated Hydrologic cycle model Extent: – troposphere, across surface and to several km below the surface Timeframes: – Has been operating in dynamic equilibrium for billions of years Average transit time for water in atmosphere (evap to precip) is 10 days Average transit time for deep ocean circulation, groundwater aquifers and glacial ice is ~10,000 years Hydrologic cycle model
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