Synchronization of modulated traveling baroclinic waves in a periodically forced, rotating fluid annulus.
Phys Rev E Stat Nonlin Soft Matter Phys 79:1 Pt 2 (2009) 015202
Abstract:
Frequency entrainment and nonlinear synchronization are commonly observed between simple oscillatory systems, but their occurrence and behavior in continuum fluid systems are much less well understood. Motivated by possible applications to geophysical fluid systems, such as in atmospheric circulation and climate dynamics, we have carried out an experimental study of the interaction of fully developed baroclinic instability in a differentially heated, rotating fluid annulus with an externally imposed periodic modulation of the thermal boundary conditions. In quasiperiodic and chaotic amplitude-modulated traveling wave regimes, the results demonstrate a strong interaction between the natural periodic modulation of the wave amplitude and the externally imposed forcing. This leads to partial or complete phase synchronization. Synchronization effects were observed even with very weak amplitudes of forcing, and were found with both 1:1 and 1:2 frequency ratios between forcing and natural oscillations.FLUID DYNAMICS Rotating convection on the edge
NATURE 457:7227 (2009) 270-271
QUAGMIRE v1.3: a quasi-geostrophic model for investigating rotating fluids experiments
GEOSCIENTIFIC MODEL DEVELOPMENT 2:1 (2009) 13-32
Saturn's Exploration Beyond Cassini-Huygens
Chapter in Saturn from Cassini-Huygens, Springer Nature (2009) 745-761
Saturn's rotation period from its atmospheric planetary-wave configuration
NATURE 460:7255 (2009) 608-610