92
4 Physical Mechanisms Forming the Wave Spectrum in Deep Water
b)
-0.16
-0.32
-0.1,8
-0.61,.
0.16
0.48
- - 1
><---X 2
X
3
Fig. 4.4. (b) Non-linear transfer function for the JONSWAP spectrum with 1 =
1.0: 1 - according to (Hasselmann and Hasselmann, 1981); 2 - according to the
given algorithm; 3 - calculated points
4.1.3 Calculation Results of Non-linear Energy Transfer
in Wind Wave Spectrum 1
Calculations of non-linear energy transfer in the wind wave spectrum can be
executed for its most typical frequency-angular approximations S(a, B) given
in the following form:
S(a,(3) = S(a) Q(a,(3),
(4.12)
where S(a) is the frequency spectrum and Q(a,(3) is the angular energy
distribution.
The frequency approximation in the form of the JONSWAP spectrum
(Hasselmann et al., 1973) is used as:
1 These calculations were made with the assistance of Dr. F. J. Ocampo-Torres
(CICESE, Mexico).