280
6 Wave Transformation in Shallow Water
a)
- 1
li,X,i
----2
- · - 3
0.06
0.50 0.15 1.0
Ji,'t,X
t.2
b)
0.8
1.8 2.6 J.4 5.0 1.4 9.0 1
oc=S.O
~=to- 3
Fig. 6.12. Variations of mean wave element in deep water with fair current, ii = 0, 1
(a); passing from deep to shallow water (b) and for shallow water (c): 1 - initial
general direction 0°; 2- direction 30°; 3- direction 60°; ' Y > 1- increasing current;
' Y < 1 - decreasing current