Nonlinear electrodynamic regime of the Rayleigh-Taylor instability in the equatorial ionosphere,accounting for ion inertia |
| |
| Affiliation: | 1. Aalto University, School of Electrical Engineering, Helsinki, Finland;2. Finnish Meteorological Institute, Helsinki, Finland;3. Geodetic and Geophysical Institute, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Sopron, Hungary;1. Institute for Laboratory Medicine, County Hospital Aarau AG, Aarau, Switzerland;2. Department of Clinical Biochemistry, Cliniques Universitaires St-Luc and Université Catholique de Louvain, Brussels, Belgium;3. Center for Medical Biochemistry, Clinical Center of Serbia, Belgrade, Serbia;4. Departments of Cardiology, St George’s University Hospitals NHS Foundation Trust and St. George''s University of London, UK;5. Clinical Chemistry, HUS Diagnostic Center, Helsinki University and Helsinki University Hospital, Helsinki, Finland;6. Department of Clinical Biochemistry, University Hospitals of North Midlands NHS Trust, Stoke-on-Trent, UK;7. School of Primary, Community and Social Care, Keele University, Stoke-on-Trent, UK;8. Regionale Kliniken Holding RKH GmbH, Germany;9. DIU Libertas International University, Zagreb, Croatia;10. Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway;11. Department of Clinical Science, University of Bergen, Bergen, Norway;12. Department of Laboratory Medicine, AZ St-Jan Hospital Bruges, and Ghent University, Ghent, Belgium;1. State Key Laboratory of Space Weather - NSSC/CAS, Beijing, China;2. National Institute for Space Research - INPE, São José dos Campos-SP, Brazil;3. Southern Space Coordination - COESU, Santa Maria-RS, Brazil;4. Helmholtz Centre Potsdam, German Research Centre for Geosciences (GFZ), Department 1: Geodesy and Remote Sensing, Potsdam, Germany;1. Department of Astronomy, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USA;2. Center for Space Physics, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USA;3. NASA Goddard Space Flight Center, Greenbelt, MD, USA;1. Department of Physics, Banaras Hindu University (BHU), Varanasi 221005, India;2. Space Physics Laboratory (SPL), Vikram Sarabhai Space Centre (VSSC), Thumba, Thiruvananthapuram 695022, India |
| |
| Abstract: | The role of nonlinearity, ion inertia and electrodynamic effects in the development of the Rayleigh-Taylor instability (RTI) of the equatorial ionospheric F-region have been investigated. On the basis of magnetic quasihydrodynamics a set of nonlinear equations has been obtained. For perturbations of a 10 km size across the geomagnetic field the role of electrodynamic effects is crucial. Nonlinearity impedes the growth of perturbations of enhanced plasma density and intensifies the bubble development. In the latter case the instability becomes explosive. At the final stage of the explosive process ion inertia plays a significant role. The nonlinear oscillatory regime has been investigated. It has been shown that at altitudes of 350 km inertia may significantly bring nearer the time of explosion. At altitudes of 250 km ion inertia exerts practically no influence on perturbation dynamics. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
