Downdrift Port Siltation Adjacent to a River Mouth: Mechanisms and Effects of Littoral Sediment Transport to the Navigation Channel

Acknowledgments

Notation

A_s

sediment load;

C_d

drag coefficient;

C_n

computed data;

$\overline{C_n}$

average-computed data;

f

constant friction factor;

f_mor

morphological factor;

$f_{\alpha }$

Coriolis force caused by a deflection of the moving object path within a rotating coordinate system;

g

acceleration of gravity;

H

water depth calculated from (η + h), in which h is still water level;

h₁

bed evolution;

M

Manning coefficient;

M_n

measured data;

$\overline{M_n}$

average-measured data;

N

discrete points;

p

bed porosity;

q_a

total sediment transport rate;

ROT

rest associated with 3D dispersion;

S_αβ

wave-induced radiation stress;

T_αβ

depth-integrated Reynold stress;

U_wα

magnitude of wave velocity;

u

velocity in cross-shore direction;

|u|

magnitude of the current velocity;

u₀

magnitude of the current velocity (u_bα) or magnitude of wave velocity U_wα when U_wα > u_bα;

u^cr

threshold velocity of sediment motion given by Van Rijn (1984);

u_bα

current velocity at the bottom;

u_rms

root-mean-square wave orbital velocity;

$u_{\alpha }$

component of the short-wave-averaged velocity;

v

velocity in longshore direction;

z_o

bed roughness;

η

wave-averaged surface elevation;

ρ

density;

${\tau }_{\alpha }^b$

bottom shear stress;

${\tau }_{\alpha }^s$

wind-induced surface stress;

β

bed slope;

σ_C

standard deviation of observation; and

σ_M

standard deviation of the model.

References