HR: 14:55h
AN: OS53B-06    [Abstracts]
TI: On a spectrum of nonlinear internal waves near the ocean coast
AU: * Filonov, A
EM: afilonov@cencar.udg.mx
AF: University of Guadalajara,Mexico, av.Juarez 975, Guadalajara, Jal 44100, Mexico
AU: Novotryasov, V
EM: vadimnov@poi.dvo.ru
AF: V.I.Il`ichev Pacific Oceanological Institute, Russia, Baltiiskaiy St.43, Vladivostok, Pri 690041, Russian Federation
AB: This work studies the internal wave band of temperature fluctuation spectra in the coastal zone of Pacific ocean. It is observed that on the central Mexican Pacific Shelf in the high-frequency band of temperature spectra the spectral exponent tends to ~ω^-1 at the time of spring tide and ~ω^-2 at the time of neap tide. On the western shelf of the Japan/East Sea, in the Ømega\llω\ll N^*ù range, where N^* is the representative buoyancy frequency and Ømega is the inertial frequency, the rate tends to ~ω^-3. These features of spectra are simulated by the model spectrum of nonlinear internal waves in the shallow water. Interaction of high-frequency internal waves with an internal wave of semidiurnal frequency is considered. It is shown that as a result of the interaction the spectrum of high-frequency internal waves take the universal form and the spectral exponent tends to ~ω^-1.
DE: 4217 Coastal processes
DE: 4277 Time series experiments (1872, 3270, 4475)
DE: 4455 Nonlinear waves, shock waves, solitons (0689, 2487, 3280, 3285, 4275, 6934, 7851, 7852)
DE: 4534 Hydrodynamic modeling
DE: 4544 Internal and inertial waves
SC: Ocean Sciences [OS]
MN: 2007 Fall Meeting