LARGE-SCALE QUASI-GEOSTROPHIC MAGNETOHYDRODYNAMICS
نویسندگان
چکیده
منابع مشابه
Large-scale energy spectra in surface quasi-geostrophic turbulence
is studied. The nonlinear transfer of this system conserves the two quadratic quantities Ψ1 = 〈[(−∆) ψ]〉/2 and Ψ2 = 〈[(−∆) ψ]〉/2 (kinetic energy), where 〈·〉 denotes a spatial average. The energy density Ψ2 is bounded and its spectrum Ψ2(k) is shallower than k in the inverse-transfer range. For bounded turbulence, Ψ2(k) in the low-wavenumber region can be bounded by Ck where C is a constant inde...
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Lindborg et al. (2010) claim that the apparent spectrum power law E(k) ≈ k−3 on scales ≥ 600 km obtained with the help of commercial jetliner trajectory deviations (GASP and Mozaic databases) could not be brought into question (Lovejoy et al., 2009a), because this spectrum corresponds to “a well known theory of quasi-geostrophic turbulence developed by Charney (1971)”. Lindborg et al. (2010) al...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2014
ISSN: 1538-4357
DOI: 10.1088/0004-637x/796/2/143