A method for computational reconstruction of fluctuating flows in the small-scale ocean was proposed based on single-point measurement in the real sea. Full-3D LES on the spatial scale of O(100m) was conducted for this purpose. Small-wavenumber components of fluctuation are forced in the whole computational domain and large-wavenumber components evolve freely in the computation. The reconstruction of spatial information from the time-sequential data obtained at a single measurement point is theoretically impossible with no assumptions. We assumed spherically even distribution of energy for large eddies. The numerical results were compared with the measurement in the time domain and their validity is discussed.

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