@inproceedings{f6b8d4e62f5d414a9d5eabd6fc1b8407,
title = "Model of intermittent zonal flow structure formation",
abstract = "We present a theory the PDF tails of the zonal flow formation by assuming that a modon (a bipolar vortex) drives a zonal flow through the generalized Reynolds stress. We show that the PDF tails of zonal flow formation have exponential behavior {equation presented}, with the overall amplitude ξ severely quenched by strong flow shear. It is found that stronger zonal flows are generated in ITG turbulence than Hasegawa-Mima (HM) turbulence as well as further from marginal stability. This suggests that although ITG turbulence has a higher level of heat flux, it also more likely generates stronger zonal flows, leading to a self-regulating system. It is also shown that shear flows can significantly reduce the PDF tails of structure formation.",
keywords = "Drift waves, Probability Distribution Functions, Zonal flows",
author = "Johan Anderson and Kim, {Eun Jin}",
year = "2008",
month = nov,
day = "7",
doi = "10.1063/1.3033708",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
pages = "247--252",
editor = "Olivier Sauter and Elio Sindoni and Xavier Garbet",
booktitle = "Theory of Fusion Plasmas - Joint Varenna-Lausanne International Workshop",
address = "United States",
note = "Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas ; Conference date: 25-08-2008 Through 29-08-2008",
}