2.0
-14 deg (orig)
1.5
-28 deg
+14 deg
+-14 deg
1.0
0.5
0.0
B
C
A
-0.5
0
2
4
6
8
10
12
14
16
Distance Alongshore (m)
Fig. 7. Calculated shoreline response for varying wave direction.
2.0
Initial
1.5
2 hr
5 hr
40 hr
1.0
0.5
0.0
-0.5
A
B
C
-1.0
0
2
4
6
8
10
12
14
16
Distance Alongshore (m)
Fig. 8. Calculated evolution of tombolos near T-head groins.
On the down-drift side of the groins sand continued to build out, but the
shoreline not yet reached the T-head. On the down-drift side of the structures a
tombolo first formed at Groin A and then last at Groin C, thus in opposite order to
the pattern on the up-drift side. After 40 hr all three groins had developed
tombolos on both sides. Substantial accretion occurred in the areas between
Groins A and C and the lateral boundaries, respectively.
The above simulation was repeated with the shore-normal part of the T-groin
removed, leaving only the detached breakwaters. The result of this simulation is
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