Saturday, May 21, 2011

Rogue waves captured, really?

Science News just published online this article entitled "Rogue waves captured" by Devin Powell. The article reports the latest work published in Physic Review Letters, Vol. 106, by Chabchoub, Hoffmann, and Akhmediev, which is the subtitle of the article: "Re-creating monster swells in a tank helps explain their origin" and the works was done in this lab wave tank:

It seemed that that writer did observe the experiment as he described:

To make a Peregrine soliton, Chabchoub wobbled a paddle back and forth at the end of a long water tank. Regularly spaced waves about a centimeter high emerged and rolled across the surface. Then he gave the paddle a precise jerk – introducing an anomaly.

“It’s possible that the wind could generate a similar modulation or perturbation in the open sea,” says Chabchoub, who describes the experiment in a paper in the May 20 Physical Review Letters.

Now it is all fine in the laboratory. But the question is still how do we expect to see the wind doing the paddle wobbling and give it a "precise jerk" in the real world out there?

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