55
Storm Impact on the Coastal Geomorphology and Current Field
depicted in Figure 3.13. The illustrated time series of the current velocity and direction are indicative for the whole area and for the exact positions that can be seen in
Figure 3.10. The time interval is 0.5 h. All the time series of direction show similar
behavior: the first 13 h there is continuously flooding, and afterward, there is the
6.104
× 10 6
× 10 6
× 10 6
× 10 6
× 10 6
× 10 6
× 10 6
× 10 6
1.4
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
1.2
1
0.8
0.6
0.4
0.2
6.1035
6.103
6.1025
Northing (m)
Easting (m)
Easting (m)
Easting (m)
Easting (m)
Velocity U comp (m/s)
St. Dev. of the U comp (m/s)
Velocity V comp (m/s)
St. Dev. of the V comp (m/s)
Northing (m)
3 .4
6 0 2
3 .4
6 0 4
3 .4
6 0 6
3 .4
6 0 8
3 .4
6 1
3 .4
6 1 2
3 .4
6 1 4
3 .4
6 1 6
3 .4
6 1 8
3 .4
6 2
3 .4
6 0 2 3 .4
6 0 4 3 .4
6 0 6 3 .4
6 0 8
3 .4
6 1 3 .4
6 1 2 3 .4
6 1 4 3 .4
6 1 6 3 .4
6 1 8
3 .4
6 2
3 .4
6 0 2
3 .4
6 0 4
3 .4
6 0 6
3 .4
6 0 8
3 .4
6 1
3 .4
6 1 2
3 .4
6 1 4
3 .4
6 1 6
3 .4
6 1 8
3 .4
6 2
3 .4
6 0 2
3 .4
6 0 4
3 .4
6 0 6
3 .4
6 0 8
3 .4
6 1
3 .4
6 1 2
3 .4
6 1 4
3 .4
6 1 6
3 .4
6 1 8
3 .4
6 2
6.104
1.4
1.2
1
0.8
0.6
0.4
0.2
6.1035
6.103
6.1025
6.104
6.1035
6.103
6.1025
Northing (m)
Northing (m)
6.104
6.1035
6.103
6.1025
FIGURE 3.13  Upper: Mean (left) and standard deviation (right) of the U component of the
velocity during the trespassing of the low front. Lower: Mean (left) and standard deviation
(right) of the V component of the velocity.
1
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
2
4
6
8
10
12
Lag (h)
Autocorrelation function
14
16
18
20
FIGURE 3.14  Autocorrelation factor of the current velocity at position B.