Environmental Engineering Reference
In-Depth Information
Table 16.1
Amplitude (A) and phase (Ph) relative to Greenwich (rounded to the nearest degree) from the Tidal Atlas
(Howarth 1990), model results and their difference
O
1
K
1
N
2
M
2
S
2
A (m)
Ph (deg)
A (m)
Ph (deg)
A (m)
Ph (deg)
A (m)
Ph (deg)
A (m)
Ph (deg)
FELIXSTOWE
Data from Atlas
0.13
174
0.10
354
0.19
300
1.20
320
0.32
20
Model
0.12
175
0.10
2
0.17
297
1.10
321
0.30
22
Difference
0.01
1
0
8
0.02
3
0.10
1
0.02
2
DOVER
Data from Atlas
0.06
165
0.06
45
0.38
310
2.29
330
0.70
28
Model
0.04
140
0.04
63
0.44
305
2.33
310
0.80
10
Difference
0.02
25
0.02
18
0.06
5
0.04
20
0.10
18
CALAIS
Data from Atlas
0.05
135
0.02
70
0.42
330
2.40
340
0.75
39
Model
0.04
140
0.04
63
0.44
305
2.33
310
0.80
10
Difference
0.01
5
0.02
7
0.02
25
0.07
30
0.05
29
DUNKERQUE
Data from Atlas
0.08
154
0.04
30
0.35
334
2.10
352
0.62
50
Model
0.07
152
0.04
8
0.37
325
2.24
335
0.71
37
Difference
0.01
2
0
22
0.02
9
0.14
17
0.09
13
H.V. HOLLAND
Data from Atlas
0.10
180
0.08
15
0.10
45
0.85
60
0.20
120
Model
0.11
172
0.08
356
0.10
30
0.83
45
0.20
113
Difference
0.01
8
0
19
0
15
0.02
15
0
7
EUROPLATFORM
Data from Atlas
0.11
178
0.09
4
0.11
3
0.77
20
0.14
105
Model
0.11
172
0.08
358
0.10
1
0.84
19
0.22
83
Difference
0
6
0.01
6
0.01
2
0.07
1
0.08
22
(significant height and peak period) recorded at
least every 3 hours during the same period. The
wave measurements were obtained from in situ
wave recorders.
changes and to develop and test numerical models
of nearshore response to natural conditions (Plant
et al. 1999; Howd and Birkemeier 1987; Reeve
et al. 2007).
Dataset
Beach profile dataset
The Field Research Facility (FRF) is located on the
Atlantic Ocean in Duck, North Carolina, USA. It
is managed by the US Army Corps of Engineers to
support the Corps' coastal engineering research.
Since the creation of the FRF, a comprehensive
long-term monitoring programme of the coastal
zone, including waves, tides, currents, local
meteorology and beach response, has been
maintained.
Measurements from this site have been used to
refine theories of the nearshore morphological
The data used for this study were from the
profile Line 62, obtained from the FRF website
(http://www.frf.usace.army.mil/frf.shtml) and
cover the period from July 1981 to December
2003 (Fig. 16.7a). Each profile was interpolated
every 2m, using a cubic spline interpolant to keep
the concavity of the raw data (Li et al. 2005). The
interpolation was carried out from the dune level
at around 70m from themain baseline until 910m
offshore (around 8m water depth). For this case
225 profiles were used.
