Abstract
In this Chapter, turbulence of atmospheric Rossby and plasma drift waves is studied. These two systems are considered together because both of them can be described using the same nonlinear wave model – Charney-Hassegawa-Mima equation. In this example, 12 we learn about nonlocal turbulence which arises in cases when Kolmogorov-Zakharov solutions fail the locality test. We will see an interesting example of the Wave Turbulence life cycle where small-scale random waves generate large-scale zonal flows, and the latter feed back onto the small scales and suppress them. As a result, turbulent transport induced by the small-scale turbulence is also suppressed. Such a feedback loop scenario is presently considered as a basic mechanism behind the Low-to-High transitions in tokamak plasmas which lead to sudden improvements in the machine performance via better confinement of plasma energy and particles.
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Notes
- 1.
Suppression of small-scale wave turbulence obviously results in suppressing of the turbulence-produced anomalous transport of the energy and particles across the confined plasma.
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Nazarenko, S. (2011). Nonlocal Drift/Rossby Wave Turbulence. In: Wave Turbulence. Lecture Notes in Physics, vol 825. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-15942-8_13
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DOI: https://doi.org/10.1007/978-3-642-15942-8_13
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