Appendices
315
energy dissipated
l mHb }
E r -
=sinot bf
(113)
longshore energy component
[K'tga b Lb
the equation proposed by Castanho for sediment weight transported by second
across a plane perpendicular to a beach becomes •
ErP
o
°
For sandy shores he suggests following values "
mH b
=0.12
K'L b
0 = 35 °
I
I--- =0.623
S
and eq. (114) yields
7GT
H2Loo =Er sinab c°s°
CO
(115)
t0.12 /
Taking E r =sinabf ~--i (fig. 38) and sina b cosct o (fig. 39) as ordinates
[tgct b J
and Ho/Lo as abscissa, since ab values are a function of Cto and H° (steepness),
Lo
he proposed following graphs to calculate littoral drift (figs. 38, 39) "
315
energy dissipated
l mHb }
E r -
=sinot bf
(113)
longshore energy component
[K'tga b Lb
the equation proposed by Castanho for sediment weight transported by second
across a plane perpendicular to a beach becomes •
ErP
o
°
For sandy shores he suggests following values "
mH b
=0.12
K'L b
0 = 35 °
I
I--- =0.623
S
and eq. (114) yields
7GT
H2Loo =Er sinab c°s°
CO
(115)
t0.12 /
Taking E r =sinabf ~--i (fig. 38) and sina b cosct o (fig. 39) as ordinates
[tgct b J
and Ho/Lo as abscissa, since ab values are a function of Cto and H° (steepness),
Lo
he proposed following graphs to calculate littoral drift (figs. 38, 39) "