11 research outputs found

    Ocean Currents Trigger Rogue Waves

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    Breathers in the Ocean

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    Predicting the occurrence of rogue waves in the presence of opposing currents with a high-order spectral method

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    International audienceWe discuss the dynamics of unidirectional random wave fields that propagate against an opposing current through laboratory experiments and direct numerical simulations of the Euler equations solved with a high-order spectral method. Both approaches demonstrate that the presence of a negative horizontal velocity gradient increases the probability of the occurrence of extreme and rogue waves in the course of their propagation with the emergence of a rapid transition from weakly to strongly non-Gaussian properties. Numerical simulations capture quantitatively well the statistical properties of laboratory observations and substantiate that underlying physics are associated to quasiresonant nonlinear interactions triggered by the background current

    Commentaries on Viewpoint: Using V̇o2 max as a marker of training status in athletes - can we do better?

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