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Geomorphology Weekly Notes 4-2.htm

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<META
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<META
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><P 
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><FONT size="+1" color="#000000"></B> Q=vol        w=width<FONT size="+1"> </P
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><FONT size="+1">V=velocity    d=depth<FONT size="+1"> </P
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><FONT size="+1">Hydrography - graph above flow/ gauging station<FONT size="+1"> </P
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><P 
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><FONT size="+1">River flow - saltation, plucking &amp; quarring<FONT size="+1"> </P
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><FONT size="+1">Kolking - Whirpool, rounded basalt<FONT size="+1"> </P
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><FONT size="+1">Lahars or volcanic water or debris also<FONT size="+1"> </P
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><FONT size="+1">Abrasion and Pot holes<FONT size="+1"> </P
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><FONT size="+1">Knick point - stream bed over waterfall<FONT size="+1"> </P
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><FONT size="+1">Slope inverse function of discharge<FONT size="+1"> </P
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><FONT size="+1">Larger channels need less slope to flow<FONT size="+1"> </P
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><FONT size="+1">Temporary vs. ultimate base level<FONT size="+1"> </P
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><FONT size="+1">Floods - annual vs. 25, 50, 75 &amp; 100 years vs. 125 yrs.<FONT size="+1"> </P
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><FONT size="+1">River sediment flow<FONT size="+1"> </P
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><FONT size="+1">Competence - Ability to transport sediment<FONT size="+1"> </P
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><FONT size="+1">Froude # is the degree of turbulence<FONT size="+1"> </P
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><FONT size="+1">Depends on velocity and depth<FONT size="+1"> </P
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><FONT size="+1">Capacity - sediment max of theoretical transmitted<FONT size="+1"> </P
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><FONT size="+1">Thalweg - line connecting max h2o depth of a channel<FONT size="+1"> </P
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><FONT size="+1">Anastomosing or anabranching channel<FONT size="+1"> </P
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><FONT size="+1">Straight channel if dredged is unstable<FONT size="+1"> </P
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><FONT size="+1">Meanders &amp; 0 X B 0 W S<FONT size="+1"> </P
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><FONT size="+1">Neck cut off, point bar (inside)<FONT size="+1"> </P
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><FONT size="+1">Broad plains and aggrading<FONT size="+1"> </P
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><FONT size="+1">Grade - 10 variables in hydrolic geometry<FONT size="+1"> </P
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><FONT size="+1">ID= discharge, load &amp; ultimate base level supply vs. transport limited<FONT size="+1"> </P
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