Anisotropic cascades in drift turbulence
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CHM has a third invariant
(Balk, SN, Zakharov, 1990).
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3 cascades cannot be isotropic.
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Potential enstrophy
Q
and
the additional invariant
Φ
force energy
E
to the ZF
scales.
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No dissipation at ZF
→
growth of intense ZF
→
breakdown of local cascades.
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Nonlocal direct interaction of
the instability-range scales
with ZF.
