Laserfiche WebLink
<br />Curve B is an enveloping curve for sand bed channels. This curve has been <br /> <br />arbitrarily extended into the zone of smaller size gravel bed channels in <br /> <br />order to intersect curve A. The variation in roughness factor data for sand <br /> <br />channels represents the effect of various bed forms (dune, antidune) as well <br /> <br />as variations in bed material size. <br /> <br />Curve C is a least squares fit of roughness factor data for gavel and cobble <br /> <br />bed channels using procedures similar to those described by LUnerinos (1970). <br /> <br />Curve D is a least squares fit of roughness factor data for sand bed channels. <br /> <br />Curve E is a lower limit curve for gravel, cobble, and boulder bed channels <br /> <br />based on laboratory data and published by Anderson and others (1970) and <br /> <br />Normann (1975). <br /> <br />24 <br />