48 citations · 109 across the 6 of their papers we have counts for
7 papers
A geometric interpretation of zonostrophic instability
Georgios Kontogiannis, Nikolaos Bakas
The zonostrophic instability that leads to the emergence of zonal jets in barotropic beta-plane turbulence was analyzed through a geometric decomposition of the eddy stress tensor.…
Is spontaneous generation of coherent baroclinic flows possible?
Nikolaos A. Bakas, Petros J. Ioannou
Geophysical turbulence is observed to self-organize into large-scale flows such as zonal jets and coherent vortices. Previous studies on barotropic beta-plane turbulence have shown…
Statistical state dynamics of weak jets in barotropic beta-plane turbulence
Nikolaos A. Bakas, Navid C. Constantinou, Petros J. Ioannou
Zonal jets in a barotropic setup emerge out of homogeneous turbulence through a flow-forming instability of the homogeneous turbulent state (`zonostrophic instability') which occur…
Emergence of non-zonal coherent structures
Nikolaos A. Bakas, Petros J. Ioannou
Planetary turbulence is observed to self-organize into large-scale structures such as zonal jets and coherent vortices. One of the simplest models that retains the relevant dynamic…
S3T stability of the homogeneous state of barotropic beta-plane turbulence
Nikolaos A. Bakas, Navid C. Constantinou, Petros J. Ioannou
Zonal jets and non-zonal large-scale flows are often present in forced-dissipative barotropic turbulence on a beta-plane. The dynamics underlying the formation of both zonal and no…
A theory for the emergence of coherent structures in beta-plane turbulence
Nikolaos A. Bakas, Petros J. Ioannou
Planetary turbulent flows are observed to self-organize into large scale structures such as zonal jets and coherent vortices. One of the simplest models of planetary turbulence is…
Emergence of large scale structure in planetary turbulence
Nikolaos A. Bakas, Petros J. Ioannou
Planetary and magnetohydrodynamic drift-wave turbulence is observed to self-organize into large scale structures such as zonal jets and coherent vortices. In this Letter we present…