Abstract

The final stage of the reaction of the coastal currents on intensive short-term wind effects is considered in the framework of nonlinear equations of shallow water on the f - plane. An exact analytical solution describing the steady state that occurs after radiation to infinity of the inertial-gravity waves is obtained using specific lagrangian invariants. Analysis of the solution shows that coastal jet shifts onshore or offshore against its original position, depending on the wind direction. Asymmetry of stationary regimes depending on the direction of the coastal currents appears with considerable wind intensity. The most significant is the influence of the currents on the development of coastal upwelling. In particular, upwelling occurs with weaker winds if the current intensity increases when the coast is on the right side of the jet. Upwelling can be blocked if the beach is located to the left of the jet, and if it is initially close enough to the shore.

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