Internal gravity waves in the coastal zone of the Sea of Japan according to the natural observations

The dynamic characteristics of the internal gravity waves (IGW) in the northwestern part of the Sea of Japan are considered on the basis of on the results of the experimental data processing. The temporal intermittency of internal waves is demonstrated, when intensive nonlinear high-frequency waves appear during the background low-frequency fluctuations. The direction, in which energy of these waves is transferred, is determined. It is shown that intensity of IGW changes in time periodically and is connected with the cycles of barotropic tide.