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The study of Langmuir circulation has a strongly interdisciplinary history; the first half of this work is a brief and eclectic review of this. Much of the research has been motivated by interest in the biology and chemistry of the mixed layer. These, in turn, are sensitive to details of typical particle trajectories; i.e., to high-order statistics of the flow such as time and space lagged covariances...
Phased Array Doppler Sonars (PADS) have been developed at Scripps over the past 20 years. These provide sector-scan images of radial velocity and acoustic intensity over ranges of 0.1 m (medical ultra sound) to 1.5 km (ocean surface wave measurement). Most recently we’ve deployed a 200 kHz PADS from the R/V Revelle during EquatorMix (October 2012, at 140W on the Equator). The pie-shaped measurement...
A three-dimensional numerical model for large-eddy simulation (LES) of oceanic turbulent processes is described. The numerical formulation comprises a spectral discretization in the horizontal directions and a high-order compact finite-difference discretization in the vertical direction. Time-stepping is accomplished via a second-order accurate fractional-step scheme. LES subgrid-scale (SGS) closure...
The value of data gathered from R/P FLIP is enhanced if the motion of FLIP is described. At surface wave frequencies, FLIP's motion can be estimated from measurements of apparent acceleration and heading. This minimal set of measurements is often available in past data sets (e.g., from the Surface Wave Process Program, or SWAPP). In addition, the accelerometer data is often of superior quality,...
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