Mixing processes relevant to phytoplankton dynamics in lakes

摘要: Abstract Active turbulence in lakes is confined to the surface mixed layer, boundary layers on lake sides and bottom, turbulent patches interior. The density stratification present most fundamentally alters pathways connecting external mechanical energy inputs, for example by wind, with its ultimate fate as dissipation heat; supports internal waves intrusions that distribute input throughout lake. Intrusions may be viewed zero horizontal wavenumber are formed each time localised mixing occurs a stratified fluid. also epilimnion differential heating or cooling deepening. fraction of volume below diurnal layer subject active very small, probably order 1% less small medium‐sized lakes. By contrast, intermittent maintains phytoplankton...