Anisotropy and intermittency in drift-wave turbulence with zonal flows: a two-dimensional continuous wavelet analysis
Abstract
We examine anisotropy and spatial intermittency at small scales in drift-wave turbulence with zonal flows. We use a two-dimensional directional continuous wavelet transform, which allows simultaneous localization in scale, position, and direction. This wavelet analysis is applied to vorticity fields obtained from numerical simulations of the modified Hasegawa-Wakatani model, a reduced model of resistive drift-wave turbulence in magnetized plasmas with zonal flows. Directional wavelet statistics characterize the anisotropy of the turbulence. The second-order moment is enhanced around directions perpendicular to the zonal flow. Spatial intermittency, characterized by scale-dependent flatness, is more pronounced around directions along the zonal flow.
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BibTeX
@article{yoshimatsu2026anisotropy,
title = {{Anisotropy and intermittency in drift-wave turbulence with zonal flows: a two-dimensional continuous wavelet analysis}},
author = {Katsunori Yoshimatsu and Zetao Lin and Hideaki Miura and Kai Schneider},
journal = {Physics of Plasmas},
year = {2026},
month = sep,
doi = {10.1063/5.0343309},
eprint = {2607.10136},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05691663v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Anisotropy and intermittency in drift-wave turbulence with zonal flows: a two-dimensional continuous wavelet analysis
AU - Katsunori Yoshimatsu
AU - Zetao Lin
AU - Hideaki Miura
AU - Kai Schneider
PY - 2026
DA - 2026/09/11
JO - Physics of Plasmas
DO - 10.1063/5.0343309
UR - https://hal.science/hal-05691663v1
AB - We examine anisotropy and spatial intermittency at small scales in drift-wave turbulence with zonal flows. We use a two-dimensional directional continuous wavelet transform, which allows simultaneous localization in scale, position, and direction. This wavelet analysis is applied to vorticity fields obtained from numerical simulations of the modified Hasegawa-Wakatani model, a reduced model of resistive drift-wave turbulence in magnetized plasmas with zonal flows. Directional wavelet statistics characterize the anisotropy of the turbulence. The second-order moment is enhanced around directions perpendicular to the zonal flow. Spatial intermittency, characterized by scale-dependent flatness, is more pronounced around directions along the zonal flow.
SN - 1070-664X
SN - 1089-7674
ER -