Место издания:Barcelona Supercomputing Center Spain
Первая страница:48
Последняя страница:50
Аннотация:Mixing processes in stratified media are extremely important in oceanology and
atmospheric sciences. Mixing is much more complicated in media with background
stratification due to density, because conventional direct cascade does not explain
actually observed transport of heat and sediments. Background stratification can be
both stable and unstable. Due to tidal motions over orography and intensive transfer
of energy from barotropic to baroclinic motions, stably stratified abyssal waters can
suffer intensive mixing due to instabilities of large amplitude waves and overturnings.
Convective motion is a natural mixer, and stably and unstably stratified layers may interact
to produce penetrative convection which is common in planetary sciences. Numerical
simulation already allowed to understand many features of instabilities and turbulence
in stratified media. Here our essential goals are to continue numerical research for two
experiments being made in Ecole Normal Superior de Lyon and Universidad Politecnica de
Catalunya.