Abstract
We present the first simultaneous space-time measurements for gravity wave turbulence in a large laboratory flume. We found that the slopes of k and omega wave spectra depend on wave intensity. This cannot be explained by any existing theory considering wave turbulence as the result of either breaking events or weakly nonlinear wave interactions. Instead, we show that random waves and breaking or coherent structures appear to coexist: The former show themselves in a quasi-Gaussian core of the probability density function and in the low-order structure functions, and the latter in the probability density function tails and the high-order structure functions.
Highlights
There has been significant progress in understanding the gravity water wave turbulence (WT) theoretically [1,2,3,4,5,6,7], with the help of numerical modeling [5,8,9,10], field observations [11], and laboratory experiments [12,13,14]
We present the first simultaneous space-time measurements for gravity wave turbulence in a large laboratory flume
We found that the slopes of k and ! wave spectra depend on wave intensity
Summary
There has been significant progress in understanding the gravity water wave turbulence (WT) theoretically [1,2,3,4,5,6,7], with the help of numerical modeling [5,8,9,10], field observations [11], and laboratory experiments [12,13,14]. Sergei Lukaschuk,1,* Sergey Nazarenko,2 Stuart McLelland,3 and Petr Denissenko4 1Department of Engineering, Hull University, Hull, HU6 7RX, United Kingdom 2Mathematics Institute, Warwick University, Coventry, CV4 7AL, United Kingdom 3Department of Geography, Hull University, Hull, HU6 7RX, United Kingdom We present the first simultaneous space-time measurements for gravity wave turbulence in a large laboratory flume.
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