Waves in planetary dynamos
(2023) In Reviews of Modern Plasma Physics 7(1).- Abstract
This Special Topic focuses on magnetohydrodynamic (MHD) processes in the deep interiors of planets, in which their fluid dynamos are in operation. The dynamo-generated, global, magnetic fields provide a background for our solar-terrestrial environment. Probing the processes within the dynamos is a significant theoretical and computational challenge and any window into interior dynamics greatly increases our understanding. Such a window is provided by exploring rapid dynamics, particularly MHD waves about the dynamo-defined basic state. This field is the subject of current attention as geophysical observations and numerical modellings advance. We here pay particular attention to torsional Alfvén waves/oscillations and magnetic Rossby... (More)
This Special Topic focuses on magnetohydrodynamic (MHD) processes in the deep interiors of planets, in which their fluid dynamos are in operation. The dynamo-generated, global, magnetic fields provide a background for our solar-terrestrial environment. Probing the processes within the dynamos is a significant theoretical and computational challenge and any window into interior dynamics greatly increases our understanding. Such a window is provided by exploring rapid dynamics, particularly MHD waves about the dynamo-defined basic state. This field is the subject of current attention as geophysical observations and numerical modellings advance. We here pay particular attention to torsional Alfvén waves/oscillations and magnetic Rossby waves, which may be regarded as typical axisymmetric and nonaxisymmetric modes, respectively, amongst a wide variety of wave classes of rapidly rotating MHD fluids. The excitation of those waves has been evidenced for the Earth — whilst their presence has also been suggested for Jupiter. We shall overview their dynamics, summarise our current understanding, and give open questions for future perspectives.
(Less)
- author
- Hori, K. ; Nilsson, A. LU and Tobias, S. M.
- organization
- publishing date
- 2023-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Dynamos, MHD, Planets, Rotating fluids, Waves
- in
- Reviews of Modern Plasma Physics
- volume
- 7
- issue
- 1
- article number
- 5
- publisher
- Springer
- external identifiers
-
- pmid:36588584
- scopus:85165892089
- ISSN
- 2367-3192
- DOI
- 10.1007/s41614-022-00104-1
- language
- English
- LU publication?
- yes
- id
- 722dab96-a03e-488c-b070-909c9dd9d275
- date added to LUP
- 2023-10-19 15:53:15
- date last changed
- 2024-04-19 02:38:43
@article{722dab96-a03e-488c-b070-909c9dd9d275,
abstract = {{<p>This Special Topic focuses on magnetohydrodynamic (MHD) processes in the deep interiors of planets, in which their fluid dynamos are in operation. The dynamo-generated, global, magnetic fields provide a background for our solar-terrestrial environment. Probing the processes within the dynamos is a significant theoretical and computational challenge and any window into interior dynamics greatly increases our understanding. Such a window is provided by exploring rapid dynamics, particularly MHD waves about the dynamo-defined basic state. This field is the subject of current attention as geophysical observations and numerical modellings advance. We here pay particular attention to torsional Alfvén waves/oscillations and magnetic Rossby waves, which may be regarded as typical axisymmetric and nonaxisymmetric modes, respectively, amongst a wide variety of wave classes of rapidly rotating MHD fluids. The excitation of those waves has been evidenced for the Earth — whilst their presence has also been suggested for Jupiter. We shall overview their dynamics, summarise our current understanding, and give open questions for future perspectives.</p>}},
author = {{Hori, K. and Nilsson, A. and Tobias, S. M.}},
issn = {{2367-3192}},
keywords = {{Dynamos; MHD; Planets; Rotating fluids; Waves}},
language = {{eng}},
number = {{1}},
publisher = {{Springer}},
series = {{Reviews of Modern Plasma Physics}},
title = {{Waves in planetary dynamos}},
url = {{http://dx.doi.org/10.1007/s41614-022-00104-1}},
doi = {{10.1007/s41614-022-00104-1}},
volume = {{7}},
year = {{2023}},
}