Chapter 5. SPATIALLY-COHERENT STRUCTURES
According to Belcher and Vassilicos (1997), the surface wave field is a
superposition of sinusoids plus sharp-crested breaking waves. The sharpcrested waves have a spike-like curvature, which leads to Phillip’s spatial
4
~
F k
k
G
and, thus, one-dimensional
3
~
x
x
f k
k
wavenumber spectra. In
particular this analogy may be useful in specifying function
B
c P entering
spectrum (5.14).
In this preliminary analysis, we have ignored the advection term u B
G
.
Feng et al. (2000) showed the importance of advection on the salinity budget
within the western Pacific warm pool. Comparative analysis of advection
and atmospheric forcing may elucidate the difference between the warm
pool and mid-latitude processes. In fact, when the advection forcing with no
atmospheric forcing is considered, the wavenumber spectrum appears to be
steeper than k x
-3 (Ferrari and Paparella, 2003).
Figure 5-14. Spectral saturation due to nonlinear diffusion.
307
According to Belcher and Vassilicos (1997), the surface wave field is a
superposition of sinusoids plus sharp-crested breaking waves. The sharpcrested waves have a spike-like curvature, which leads to Phillip’s spatial
4
~
F k
k
G
and, thus, one-dimensional
3
~
x
x
f k
k
wavenumber spectra. In
particular this analogy may be useful in specifying function
B
c P entering
spectrum (5.14).
In this preliminary analysis, we have ignored the advection term u B
G
.
Feng et al. (2000) showed the importance of advection on the salinity budget
within the western Pacific warm pool. Comparative analysis of advection
and atmospheric forcing may elucidate the difference between the warm
pool and mid-latitude processes. In fact, when the advection forcing with no
atmospheric forcing is considered, the wavenumber spectrum appears to be
steeper than k x
-3 (Ferrari and Paparella, 2003).
Figure 5-14. Spectral saturation due to nonlinear diffusion.
307