562 



I I resolution orea Ak^zAky =(220m)" > 



0,5 spectral density(m4) 



FIGURE 10. Contour-line plot of k-spectrum off Sylt, 

 Sept. 18th, 1973. Contour-line interval equivalent 

 to factor 2. Minor variations are dashed, shaded 

 areas seriously affected by noise. Orientation of 



110° 



positive k„-axis 

 Wind direction 110° 



k -axis 200 



X 



from true North. 



Sylt 730918 







0.01 0.02 003 QOi a05 Q06 007 aOB 0.09 0.10 



wavenumbcr component kJ^[m■"J 



Noordwijk 761112 



FIGURE 11. Contour-line plot of k-spectrum off 

 Noordwijk, Nov. 12th, 1976. Contour- line interval 

 equivalent to factor 2. Minor variations are dashed, 

 shaded areas seriously affected by noise. Orientation 

 of ky-axis 275°, negative k -axis 185° from true 

 North. Wind direction 140°. 



□ resolution area AK^=AK„=( 156 m) £ 



, > =1 



0.5 spectraL density (m^l c 



Ofl2 aOi QD6 QOe 0,10 ai2 Oli 0.16 



wavenumber component k [nn~ J 



^ 



North Wind 



Noordv\/ijk 760323 



4J ^ 



D resolution area AK^: AKy=(l70mr^ £ 

 0,5 spectroL density (m'-) 



FIGURE 12. Contour- line plot of k-spectrum off 

 Noordwijk, March 23rd, 1976. Contour-line interval 

 equivalent to factor 2. Minor variations are dashed, 

 shaded area seriously affected by noise. Orientation 

 of ky-axis 310°, kjj-axis 40° from true North. Wind 

 direction 70°. 



