Journal article
New Regime of Inertial Alfvén Wave Turbulence in the Auroral Ionosphere
Physical review letters, Vol.133(4), 045201
07/2024
DOI: 10.1103/PhysRevLett.133.045201
Abstract
We investigate a new regime of inertial Alfvén wave turbulence observed in the very low beta plasma of the auroral ionosphere using electric and magnetic field measurements by the TRICE-2 sounding rocket. Combining the observed features of the electric and magnetic field frequency spectra with the linear properties of inertial Alfvén waves, we deduce the path of the anisotropic turbulent cascade through wave vector space. We find a critically balanced cascade through the magnetohydrodynamic scales of the inertial range down to the perpendicular scale of the plasma skin depth, followed by a parallel cascade to the ion inertial length. We infer damping of the cascade by a combination of proton cyclotron damping and electron Landau damping. Published by the American Physical Society 2024
Details
- Title: Subtitle
- New Regime of Inertial Alfvén Wave Turbulence in the Auroral Ionosphere
- Creators
- Francesca Di Mare - Goddard Space Flight CenterGregory G. Howes - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.133(4), 045201
- Publisher
- AMER PHYSICAL SOC
- DOI
- 10.1103/PhysRevLett.133.045201
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Grant note
- Research Council of Norway (RCN) Overseas Research Grant: ES658406/312055 NASA: 80NSSC18K0643
We wish to acknowledge the sup-port of the TRICE-2 rocket team. F. D. M. was supported by the Research Council of Norway (RCN) Overseas Research Grant No. ES658406/312055 and G. G. H. was supported by NASA Grant No. 80NSSC18K0643.
- Language
- English
- Date published
- 07/2024
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984687781002771
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