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Geomorphology Weekly Notes 4-1.htm

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><FONT size="+1" color="#000000"></B>4-1</P
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>Fluvial Process -    What Rivers do &amp; pre conditioning<FONT size="+1"> </P
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><FONT size="+1">Ie: mass wasting and weathering<FONT size="+1"> </P
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><FONT size="+1">Rain, Rivers, Weather &amp; Water. Davis - New England basis<FONT size="+1"> </P
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><FONT size="+1">Infiltration - duration &amp; intensity<FONT size="+1"> </P
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><FONT size="+1">Previous condition (vegetation, soil, slope, etc)<FONT size="+1"> </P
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><FONT size="+1">Saturation Overland Flow - All spaces filled<FONT size="+1"> </P
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><FONT size="+1">Surface layer filled - Overland flow<FONT size="+1"> </P
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><FONT size="+1">New Orleans &amp; Texas - Katrina<FONT size="+1"> </P
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><FONT size="+1">Hortonian Overland flow has much sediment<FONT size="+1"> </P
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><FONT size="+1">Through flow a interflow is seepage generated<FONT size="+1"> </P
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><FONT size="+1">Large pressure of ground water running down slope<FONT size="+1"> </P
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><FONT size="+1">Turbulent vs. laminar flow<FONT size="+1"> </P
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><FONT size="+1">Sheet flow surface H20 &amp; sediment<FONT size="+1"> </P
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><FONT size="+1">rill - small channel downhill<FONT size="+1"> </P
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><FONT size="+1">Piping ability to remove sediment by seepage<FONT size="+1"> </P
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><FONT size="+1">Sapping is lowering of springs (surface/h2o otable)<FONT size="+1"> </P
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><FONT size="+1">Gully - deeper and steeper than rill<FONT size="+1"> </P
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><FONT size="+1">Branching channels (first step in cutting landscapes)<FONT size="+1"> </P
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><FONT size="+1">Soil Erosion - RUSLE = A = RUSLE<FONT size="+1"> </P
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><FONT size="+1">A=    Predicted soil loss<FONT size="+1"> </P
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><FONT size="+1">R=   Climate erosion Rainfall and Runoff<FONT size="+1"> </P
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><FONT size="+1">K=   Soil erosion factor<FONT size="+1"> </P
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><FONT size="+1">L=   Slope Length<FONT size="+1"> </P
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><FONT size="+1">S=    Slope gradient<FONT size="+1"> </P
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><FONT size="+1">C=   Cover &amp; Management Practices<FONT size="+1"> </P
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><FONT size="+1">P=    Erosion Control<FONT size="+1"> </P
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><FONT size="+1">R=    Effect of rainfall &amp; erosion (local differences)<FONT size="+1"> </P
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><FONT size="+1">K=   Actual vs. standard loss of soil<FONT size="+1"> </P
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><FONT size="+1">L +S= Topographic factors<FONT size="+1"> </P
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><FONT size="+1">C=   Row Crops vs. Bunch Crops<FONT size="+1"> </P
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><FONT size="+1">P=    Mgt- Paddy, Contour, intercropping<FONT size="+1"> </P
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><FONT size="+1">5/A Max to Sustain viable soil and Intermittent vs. permanent flow vs. flood stage<FONT size="+1"> </P
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><FONT size="+1">Discharge - <U>Volume H20 </U>                          t<FONT size="+1"> </P
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><FONT size="+1">Q==wdv<FONT size="+1"> </P
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><FONT size="+1">Cross Section Flow</P
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