منابع مشابه
Chaos and mixing in a geostrophic flow
Experimefits on Rossby waves on an azimuthal jet in a rapidly rotating annular tank reveal a striking barrier to mixing across the jet. A model based on the experiments assumes a twodimensional incompressible flow described by a time-dependent streamfunction consisting of azimuthally propagating waves on a narrow jet. When there is only one wave, all Lagrangian particle trajectories are closed ...
متن کاملMixing in gravity currents
We study entrainment in lock-release gravity currents using highly spatially resolved optical transmission experiments and quantitative analysis of the available potential energy of the flow. The principal results provide a resolution to the debate regarding the mechanism and degree of mixing in the head of a gravity current during the slumping phase. The nature of the complex internal mixing s...
متن کاملOn the global estimates of geostrophic and Ekman surface currents
Surface currents in oceanic environments are of crucial importance because they transport momentum, heat, salt, and tracers over large distances that regulate both the local and large-scale climate conditions, and because they contribute to the Lagrangian displacement of floating material, ranging from living resources to marine pollution. In recent decades, the understanding of surface current...
متن کاملInterfacial gravity currents. I. Mixing and entrainment
Experiments are performed to examine mixing and transport due to an intrusive gravity current in a twoand three-layer fluid. Successive passages of the intrusion act to increase the depth of the middle layer. The observed broadening rates and the deposition of potential energy are compared with theories that neglect mixing and entrainment processes. As the middle layer widens, a transition in t...
متن کاملA simple and self-consistent geostrophic-force-balance model of the thermohaline circulation with boundary mixing
A simple model of the thermohaline circulation (THC) is formulated, with the objective to represent explicitly the geostrophic force balance of the basinwide THC. The model comprises advective-diffusive density balances in two meridional-vertical planes located at the eastern and the western walls of a hemispheric sector basin. Boundary mixing constrains vertical motion to lateral boundary laye...
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ژورنال
عنوان ژورنال: Journal of the Oceanographical Society of Japan
سال: 1956
ISSN: 0029-8131,2186-3113
DOI: 10.5928/kaiyou1942.12.109