Abstract
An analogy between sandpile relaxation and the evolution of the drift wave spectrum by zonal flow induced shearing is used to characterize the probability distribution function of fluctuations in the drift wave population density Ñ, and thus address the predictability of intermittency in drift wave-zonal flow turbulence. Basic conservation and symmetry properties are used to derive a generalized Burgers equation for Ñ in the radial wave number kr. Shocks are symptomatic of shearing events, which are analogous to avalanches in the sandpile. The pdf P(ΔÑ) is shown to be intrinsically asymmetric in kr and the asymptotic behaviors of both left and right tails are determined. The implications of these results for transport are discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
