Geological Hazards and Their Impact_McGeary_Date_042110

Geological Hazards and Their Impact_McGeary_Date_042110 -...

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Stream Processes and Flooding WATER - global view where does the Earth store water? Oceans Glaciers Groundwater o Unsaturated zone air in pore spaces o Water table boundary between zones o Saturated zone water in pore spaces (groundwater) o River place where water table meets the surface - global view transport processes E.T. evapotranspiration o Evaporation form land o Transpiration form plants Precipitation (into oceans, absorbed by groundwater, and streamflow) Streamflow melted ice and groundwater - know how to draw water cycle (picture in book) - hillside processes precipitation interception (rainfall captured by trees) evapotranspiration surface runoff
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Unformatted text preview: (to a stream) infiltration (into ground) depression storage o surface water runoff causes floods mostly rain and snow melting - streamflow watershed- an area upstream of a point on a stream that contributes surface water to a stream o consist of hillslopes and stream channel o edge is called the divide (drainage) o outlet is all the water leaving the watershed as surface water passed through this point - discharge volume of water flowing past a point per unit time cubic feet per second two components to discharge o rate of flow- velocity o cross section- area of the river Q = v x a (discharge = velocity x area)...
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Geological Hazards and Their Impact_McGeary_Date_042110 -...

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