shows the existence of the characteristic of a sea peak in the mono-static case for the grazing angle ([[theta].sub.i] = -85 degree).
Wetzel  has defined the sea peak as a rapid changing of [[sigma].sub.HH] exceeding 10 dB in a period of about 100 ms.
Knowing that the time between profile 3 and profile 12 is in order of 100 ms and the difference of [[sigma].sub.HH] (dB) between these two profile exceeds 10dB, which satisfies the criterion of Wetzel  for a sea peak. Then, we can say that for the bistatic configuration ([[theta].sub.i] = 0[degrees], [[theta].sub.s] = -42[degrees], [[theta].sub.i] = 0[degrees], [[theta].sub.s] = -45[degrees] and [[theta].sub.i] = 0[degrees], [[theta].sub.s] = -50[degrees]) we found out the nonlinear effect of a breaking wave which is in the form of a sea peak.
These relevant results show that even the simple path scattering of the breaking wave positive and negative slopes generates the sea peak in bistatic case.
These results show that for non-grassing angels, particularly for [[theta].sub.i] = 0[degrees] the presence of a sea peak. However, it has been proved that the sea peak occurs only for the grassing angles monostatic case (Holliday et al.
We have also demonstrated that the sea peak is due the simple path scattering of the breaking wave positive slope.
As it turned out, however, Urban Sea peaked
at the right time and, after taking up the running a furlong out under Eric Saint-Martin, she bravely repelled the challenge of White Muzzle to cross the line a neck in front, earning European champion older mare honours in the process.