Although the square waves are beautiful, they are also quite dangerous, it is recommended not to swim in those places. Curiously, many people head to the island's lighthouse, built in 1854, to observe this incredible phenomenon. These peculiar and rare waves are formed by the collision of two deep oceans thousands of meters deep, and other factors such as the wind cause the waves to travel so far that the surface of the sea looks strange.Īs a result, these impacts form a diamond or square pattern that makes Ré one of the most incredible places in the world. They are normal waves that form a grid on the sea as if it were a chessboard. This is a partial differential equation that describes nonlinear fluctuations, often used to explain the interactions of weather systems. ![]() As far as scientists are concerned, they see this phenomenon as an example of the Kadomtsev-Petviashvili equation. ![]() It also happens when the wind pulls the waves in one direction and the waves push them in the other direction. This is a fairly rare phenomenon that can form and dissipate in a matter of minutes, its formation depends on the weather patterns in the area, which causes waves to form at different angles, and when they collide, they create this grid pattern. The conditions are quite common in the ocean and occur when a tide and a swell, or two swell systems, coexist.” Crossing sea state has become of particular interest in the ocean wave community. “A sea state with two wave systems traveling at oblique angles is called a swell. On its website, the European Space Agency explains that: These marine phenomena are characterized by waves crashing into the water and forming squares. Waves of this type are common on the Ile de Ré in France, where this "crossover" usually occurs. However, when this phenomenon occurs on the surface of the sea, it can cause serious problems and even death. These types of events occur in the depths of the ocean, so they are rare and their presence does not mean a problem. In the sea, the waves are like a chessboard, as if they draw lines on the water. A square wave, or also called "cross seas", It is a phenomenon that occurs when two ocean currents collide with each other at high speed and with great force.
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