Magnetic Storms and Auroral Substorms
John Wiley & Sons Inc (Verlag)
9781119387824 (ISBN)
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SECTION I
SW Dynamo: Transports SW Kinetic Energy Directly to Plasma Sheet
Chapter 1. Sequence of Cause-Effect Events Characterizing the SW Dynamo
Southward turning of the IMF initiates dayside reconnection to activate the SW dynamo in the tail magnetopause region. SW dynamo current in the tail magnetopause closes spontaneously through PS motor current known as the cross-tail current to form the tail current loops, which characterize the SW dynamo-PS motor coupling circuit to transport the SW kinetic energy directly to the plasma sheet to drive the global earthward convection.
Chapter 2. Cause and Effect of Dayside Reconnection
Dayside reconnection is driven by the solar wind to produce open field lines and activate the solar wind (SW) dynamo
Chapter 3. Cause and Effect of Tail Reconnection
Tail reconnection is arguably initiated by the tearing instability in the thinning region in the plasma sheet to produce closed field lines and flow bursts.
Chapter 4. Tail Current Loops (TCLs): The Circuit Transports SW Kinetic Energy to Drive the Global Earthward Convection in the Plasma Sheet
The TCLs is the core circuit closing the SW dynamo current spontaneously through the PS motor current, where PS denotes plasma sheet. The current in the TCLs transports the SW kinetic energy directly to the plasma sheet
Chapter 5. Tail Reconnection Suppose to Drive Localized Flow Bursts Observed in the Plasma Sheet
Flow bursts produced by tail reconnection are based on observed by Baumjohann et al. (1990).
Chapter 6. How Much Magnetic Energy Is Released by the Tail Reconnection?
Cao et al. (2013) estimate the kinetic energy of a flow burst event.
SECTION II
Tail Current Loops Model of Magnetic Storms
Magnetic storm is characterized by a sequence of cause-effect events.Entropy in the M-I coupling system is not conserved due to irreversible dissipations in the system at all times, from quiet time to disturbed time. Entropy increase is necessary to facilitate the penetration of the global earthward convection into the inner magnetosphere to build up the ring current during magnetic storms. Storm-substorm relationship can contribute secondarily to the storm-time ring current.
Chapter 7. Entropy Increases in the M-I Coupling System Caused by Irreversible Dissipations
Entropy is conserved in the collisionless plasma sheet if it is isolated from its surroundings. Irreversible dissipations in the M-I (magnetosphere-ionosphere) coupling system occur at all times. Hence entropy is not conserved in the M-I coupling system.
Chapter 8. Magnetic Storms Driven by Global Earthward Convection Powered by the SW Kinetic Energy
The primary energy source for the magnetic storm is the global earthward convection powered by the solar wind.
Chapter 9. Storm-Substorm Relationship
Substorm injections make secondary contributions to the storm-time ring current.
SECTION III
Cowling Electrojet Current Loop Model of Auroral Substorms
Auroral substorms are characterized by the global-scale cause-effect events: Tail current loops powered by the SW kinetic energy drive the global earthward convection. Cowling electrojet current loop is energized by the global earthward convection. Alfven wavefront leads the propagation along field lines toward the near-Earth plasma sheet. Incident of the Alfven wavefront on the near-Earth plasma sheet triggers the substorm dipolarization onset. We prefer to discuss critical reviews of other substorm-related models in a refereed journal.
Chapter 10. Discrete Auroral Arcs Imbedded in the Subvisible Diffuse Aurora
Precipitating electrons accelerated through field-aligned potential drop on auroral filed lines produces discrete auroral arcs. Substorm onset arc brightens by the intense upward field-aligned current propagates behind the Alfven wavefront towards th plasma sheet.
Diffuse auroral patches are produced by particles energized by wave-particle interactions in the M-I coupling system.
Chapter 11. Cowling Electrojet Enhanced by Southward Polarization E-Field Induced in the Midnight Sector
Observed absence of the radial current in the equatorial plasma sheet in the midnight sector blocked the northward Hall current from closure to result in the southward polarization E-field in the midnight sector.
Chapter 12. Alfven Wavefront of Cowling Electrojet Current Loop Propagates Toward Near-Earth Plasma Sheet
Current in the Alfven wavefront is anti-parallel to the cross-tail current in the plasma sheet. Incidence of Alfven wavefront on the near-Earth plasma sheet disrupts the cross-tail current to result in the substorm dipolarization onset.
Chapter 13. Brightening of Substorm Onset Arc Precedes Substorm Dipolarization Onset by ~80 Second
Brightening of the substorm onset arc, estimated based on the THEMIS data, precedes the substorm dipolarization onset by ~80 seconds, which is observation to be the Alfven wave propagation time from ionosphere to the near-Earth plasma sheet.
Chapter 14. Expanding Auroral Bulge Characterizes Substorm Expansion Phase
Expanding auroral bulge is produced particles precipitated from the substorm dipolarization region
Chapter 15. Comparing Energy Consumed in a Substorm with the Energy Contained in a Flow Bursts Event
| Erscheinungsdatum | 08.12.2017 |
|---|---|
| Reihe/Serie | Geophysical Monograph Series |
| Verlagsort | New York |
| Sprache | englisch |
| Gewicht | 666 g |
| Themenwelt | Naturwissenschaften ► Geowissenschaften ► Geologie |
| ISBN-13 | 9781119387824 / 9781119387824 |
| Zustand | Neuware |
| Informationen gemäß Produktsicherheitsverordnung (GPSR) | |
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