Quantitative analysis methods of dissipated energy in the ocean turbulence

Turbulent energy cascade and intermittency are very important properties in marine fluid flows and it has become an interesting field in physical oceanography research. To quantitatively characterize that how the turbulent dissipated energy are distributed among the various scales of motion and examine the different physical processes occurring on these different time scales, we propose a quantitative analysis method based on the adaptive empirical mode decomposition, wavelet transform technique and local intermittency measure approach. The energy cascade in the ocean turbulence is investigated using the measured shear data in the South China Sea. These collected long-term turbulence series are used to resolve the critical role of energy cascade and larger-scale ocean circulation dynamics.