Diagrammatic method to describe the self-inductive response of the magnetosphere-ionosphere-atmosphere-Earth electromagnetically coupled system as a quasi-particle excitation

Akimasa Yoshikawa, Kiyohumi Yumoto, Manabu Shinohara, Masahiro Itonaga

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

[i] A diagrammatic method to intuitively describe the inductive response of wave fields in the magnetosphere-ionosphere-atmosphere-Earth (MIAE) electromagnetically coupled system is developed. The coupling process of magnetohydrodynamic (MHD) waves and atmospheric electromagnetic waves, which interact with an anisotropically conducting thin sheet ionosphere, can be understood in terms of a process of redistribution of the induced current of wave modes. On the basis of the current conservation law and Faraday's law of electromagnetic induction, a redistribution process of the source-induced current of wave modes to the secondary wave is simply illustrated. The purpose of this paper is to propose a methodology to describe the inductive response of a complex electromagnetically coupled system that is divided by a conducting boundary layer. As an example, we derive the reflection coefficient and the mode conversion ratio of MHD waves at an anisotropic, inductive ionosphere by using the concept of induced current redistribution. We also demonstrate that the redistribution process of wave modes under the law of conservation of induced current also satisfies an energy conservation law in the MIAE system. However, the true merit of this method is its applicability to the highly inhomogeneous region, in which many types of waves exist and interact through thearbitrary boundary layers.

Original languageEnglish
JournalJournal of Geophysical Research: Space Physics
Volume107
Issue numberA5
DOIs
Publication statusPublished - Jan 1 2002

Fingerprint

Magnetosphere
Earth atmosphere
Ionosphere
elementary excitations
magnetospheres
ionospheres
magnetosphere
ionosphere
atmosphere
Induced currents
excitation
magnetohydrodynamic waves
conservation laws
energy conservation
boundary layers
magnetohydrodynamics
conduction
Magnetohydrodynamics
methodology
boundary layer

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

@article{2f859b54158e49c6856936189fa311e0,
title = "Diagrammatic method to describe the self-inductive response of the magnetosphere-ionosphere-atmosphere-Earth electromagnetically coupled system as a quasi-particle excitation",
abstract = "[i] A diagrammatic method to intuitively describe the inductive response of wave fields in the magnetosphere-ionosphere-atmosphere-Earth (MIAE) electromagnetically coupled system is developed. The coupling process of magnetohydrodynamic (MHD) waves and atmospheric electromagnetic waves, which interact with an anisotropically conducting thin sheet ionosphere, can be understood in terms of a process of redistribution of the induced current of wave modes. On the basis of the current conservation law and Faraday's law of electromagnetic induction, a redistribution process of the source-induced current of wave modes to the secondary wave is simply illustrated. The purpose of this paper is to propose a methodology to describe the inductive response of a complex electromagnetically coupled system that is divided by a conducting boundary layer. As an example, we derive the reflection coefficient and the mode conversion ratio of MHD waves at an anisotropic, inductive ionosphere by using the concept of induced current redistribution. We also demonstrate that the redistribution process of wave modes under the law of conservation of induced current also satisfies an energy conservation law in the MIAE system. However, the true merit of this method is its applicability to the highly inhomogeneous region, in which many types of waves exist and interact through thearbitrary boundary layers.",
author = "Akimasa Yoshikawa and Kiyohumi Yumoto and Manabu Shinohara and Masahiro Itonaga",
year = "2002",
month = "1",
day = "1",
doi = "10.1029/2000JA000405",
language = "English",
volume = "107",
journal = "Journal of Geophysical Research",
issn = "0148-0227",
number = "A5",

}

TY - JOUR

T1 - Diagrammatic method to describe the self-inductive response of the magnetosphere-ionosphere-atmosphere-Earth electromagnetically coupled system as a quasi-particle excitation

AU - Yoshikawa, Akimasa

AU - Yumoto, Kiyohumi

AU - Shinohara, Manabu

AU - Itonaga, Masahiro

PY - 2002/1/1

Y1 - 2002/1/1

N2 - [i] A diagrammatic method to intuitively describe the inductive response of wave fields in the magnetosphere-ionosphere-atmosphere-Earth (MIAE) electromagnetically coupled system is developed. The coupling process of magnetohydrodynamic (MHD) waves and atmospheric electromagnetic waves, which interact with an anisotropically conducting thin sheet ionosphere, can be understood in terms of a process of redistribution of the induced current of wave modes. On the basis of the current conservation law and Faraday's law of electromagnetic induction, a redistribution process of the source-induced current of wave modes to the secondary wave is simply illustrated. The purpose of this paper is to propose a methodology to describe the inductive response of a complex electromagnetically coupled system that is divided by a conducting boundary layer. As an example, we derive the reflection coefficient and the mode conversion ratio of MHD waves at an anisotropic, inductive ionosphere by using the concept of induced current redistribution. We also demonstrate that the redistribution process of wave modes under the law of conservation of induced current also satisfies an energy conservation law in the MIAE system. However, the true merit of this method is its applicability to the highly inhomogeneous region, in which many types of waves exist and interact through thearbitrary boundary layers.

AB - [i] A diagrammatic method to intuitively describe the inductive response of wave fields in the magnetosphere-ionosphere-atmosphere-Earth (MIAE) electromagnetically coupled system is developed. The coupling process of magnetohydrodynamic (MHD) waves and atmospheric electromagnetic waves, which interact with an anisotropically conducting thin sheet ionosphere, can be understood in terms of a process of redistribution of the induced current of wave modes. On the basis of the current conservation law and Faraday's law of electromagnetic induction, a redistribution process of the source-induced current of wave modes to the secondary wave is simply illustrated. The purpose of this paper is to propose a methodology to describe the inductive response of a complex electromagnetically coupled system that is divided by a conducting boundary layer. As an example, we derive the reflection coefficient and the mode conversion ratio of MHD waves at an anisotropic, inductive ionosphere by using the concept of induced current redistribution. We also demonstrate that the redistribution process of wave modes under the law of conservation of induced current also satisfies an energy conservation law in the MIAE system. However, the true merit of this method is its applicability to the highly inhomogeneous region, in which many types of waves exist and interact through thearbitrary boundary layers.

UR - http://www.scopus.com/inward/record.url?scp=36448974529&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36448974529&partnerID=8YFLogxK

U2 - 10.1029/2000JA000405

DO - 10.1029/2000JA000405

M3 - Article

AN - SCOPUS:36448974529

VL - 107

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

IS - A5

ER -