Streamer and zonal flow generation from envelope modulations in drift wave turbulence

被引：83

作者：

Champeaux, S ^{[1
]}

Diamond, PH ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

PHYSICS LETTERS A | 2001年 / 288卷 / 3-4期

关键词：

D O I：

10.1016/S0375-9601(01)00549-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The origin of anisotropic secondary flows, such as zonal flows and streamers, in drift wave turbulence is examined, A unified description including diffraction effects is given for zonal flow and streamer generation via envelope modulation of drift-wave packet. Stability boundaries, nonlinear growth rates and typical structure scales are determined for both streamer and zonal flow. A novel result is the determination of the characteristic width of those structures. which is found to depend on intrinsically nonlinear processes. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：214 / 219

页数：6

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