Fossil turbulence and internal waves

摘要: Measurements of small scale temperature and velocity fluctuations in the ocean show that most layers turbulence occurs isolated patches occupying a fraction fluid volume. Most microstructure observed are partially mixed remnants previous overturning events after has been damped out. The often restratified at larger scales original turbulence. smaller more isotropic. An equilibrium microscale is preserved by laminar straining motions either ambient internal waves, remnant waves produced when was damped, or restratification. Such referred to as fossil Fossil can be distinguished from active because only exist inertial forces eddy than buoyancy viscous forces: this requires 1.2 LR?λ?1...