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<br />Proceedings of/he Seventh Federal Interagency Sedimenla/lOn Conference. Murch 25 fo 29, 2001, ,'?eno. Nemda <br /> <br />. <br /> <br />A <br /> <br /> 0,10 <br />#: 0,09 <br />~ <br />c: 0.08 <br />0 <br />"e 0,07 <br />- <br />c: <br />'" 0,06 <br />u <br />c: <br />0 0,051 <br />c.> <br /> 0.04 <br /> 0,10 <br />B <br /> 1,10 <br /> 1,05 <br /> 1.00 <br />. 0,95 <br />= <br /> 0,90 <br /> 0,85 <br /> 0,80 <br /> 0,75 <br /> 0,0 <br /> <br /> <br />0.12 0,14 0,16 0,18 0,20 O,2~' <br />Os (mm) <br /> <br /> <br />. <br /> <br />i __Observed 050 of bed <br />-- Predicted (narrow, no dune.) <br />: " '" Predictlld (wide, no dunes) <br />I -..- Pr9dicted (narrow, dunes) <br />I -- --. -- Predicted (wide, dunes) <br /> <br />I I , <br /> <br />,I, <br /> <br />r I <br /> <br />I I I <br /> <br />I I" , I ,. <br /> <br />l <br /> <br />.. <br /> <br />0.44 <br /> E <br />0.42 E <br /> - <br /> r::;,.Q <br />0.40 ... <br />c: <br /> Ql <br /> E <br /> '5 <br />0,38 '" <br />CJ) <br /> "C <br /> '" <br /> .c <br />0,36 >+- <br />0 <br /> .... <br /> '" <br /> ... <br /> '" <br />0,34 E <br /> (1j <br /> '5 <br />0,32 ai <br />'5 <br /> '" <br /> ::;: <br />0,30 <br />},O <br /> <br />Figure 2. a and P during the 1996 nood experiment In Grand Canyon. A. ConcentratIon and gram size for grain- <br />size.regulated transport at Grand Canyon gage during the 1996 flood experiment. As sediment on the bed was <br />winnowed, suspended sediment decreased in concentration and increased in grain size; concen\ra\',on and grain sile <br />are negatively correlated (a = -1.5). B. Plot of P and predicted and observed bed-sediment ~edian diameter. <br />Observed bed-sediment median diameter was detennined from samples collected al 3-5 10cati')Ils at the Grand <br />Canyon gage cableway (Rubin et a\., 1998; Topping et a\., 1999); P was calculated using eq (5) and suspended, <br />sediment measurements; predicted values of bed-sediment median diameler were calculated by expressing P relative <br />10 the median diameter of all bed samples. <br /> <br />. <br /> <br />1,0 <br /> <br />3,0 <br /> <br />5,0 6,0 <br /> <br />4,0 <br /> <br />2,0 <br /> <br />Time (days) <br /> <br />I ,2U4 <br />