THE 2D NUMERICAL SIMULATION OF FULLY NONLINEAR BAROCLINIC WAVE MOTIONS ON THE NORTH-EASTERN SHELF OF SAKHALIN ISLAND
A. A. Kurkin, O. E. Kurkina, E. A. Ruvinskaya
VANT. Ser.: Mat. Mod. Fiz. Proc 2022. Вып.4. С. 41-54.
In the framework of this work, to study the features of baroclinic currents, several vertical "sections" were selected in the north-eastern part of the shelf zone of Sakhalin island, which is rich in oil and gas and represents by itself a unique ecosystem. It is shown that the baroclinic component makes a significant contribution to the flow field and has a complex multimode highly nonlinear structure. Several long wave transformation regimes have been identified and estimates of the amplitudes of both baroclinic tidal waves and short-period internal waves generated at their fronts have been obtained. The numerical simulation performed allows concluding that baroclinic tidal waves and intensive internal waves may contribute to the generation of underwater dunes in the coastal zone of this part of the water area, as noted in papers devoted to field observations, and also affect the functioning of the entire coastal ecosystem.Keywords: stratified medium, ocean shelve, solitary waves, bottom velocities, Froude number, numerical simulation, solibore, wavelet analysis, correlation analysis.
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