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Titolo:
Current controversies in magnetospheric physics
Autore:
Lui, ATY;
Indirizzi:
Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA Johns Hopkins Univ Laurel MD USA 20723 ppl Phys Lab, Laurel, MD 20723 USA
Titolo Testata:
REVIEWS OF GEOPHYSICS
fascicolo: 4, volume: 39, anno: 2001,
pagine: 535 - 563
SICI:
8755-1209(200111)39:4<535:CCIMP>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLUX-TRANSFER EVENTS; DRIVEN SURFACE-WAVES; INTERPLANETARY MAGNETIC-FIELD; UPSTREAM PRESSURE VARIATIONS; RING CURRENT DEVELOPMENT; STORM-SUBSTORM RELATION; CENTRAL PLASMA SHEET; WIND ENERGY-TRANSFER; DAYSIDE MAGNETOPAUSE; BOUNDARY-LAYER;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
113
Recensione:
Indirizzi per estratti:
Indirizzo: Lui, ATY Johns Hopkins Univ, Appl Phys Lab, 11100 Johns Hopkins Rd, Laurel, MD 20723 USA Johns Hopkins Univ 11100 Johns Hopkins Rd Laurel MD USA 20723 USA
Citazione:
A.T.Y. Lui, "Current controversies in magnetospheric physics", REV GEOPHYS, 39(4), 2001, pp. 535-563

Abstract

The scientific ascent of humankind comes in two forms: incremental progress with traditional thinking, and paradigm transition. The latter typically engenders intense debate, often long lasting, before the transition of the paradigm is deemed acceptable. The magnetospheric discipline is no exception, especially in view of the sparse observations available to reach conclusive theory-data closure. Scientific controversies serve an important role in identifying significant unresolved issues for progress to be made. This review highlights key issues on four controversies present in magnetosphericphysics: (1) the on-and-off debate on whether the magnetic field combined with the plasma bulk flow or the electric field combined with the current density is the primary quantity in treating magnetospheric problems; (2) theproper interpretation of transient dayside magnetospheric phenomena, i.e.,whether they are related to flux transfer events, plasma transfer events, or solar wind pressure pulses; (3) the physical processes responsible for substorm onset; and (4) justifications for substorms or enhanced magnetospheric convection as the cause of magnetic storms. In issue I the merits and limitations of the two approaches are expounded. In issue 2 the predicted similarities and differences between the three interpretations are summarized. In issue 3 the strengths and weaknesses of prominent existing substorm models are elaborated on. In issue 4 the two contributors to storms are, recognized and combined. Each controversy has an element of a paradigm transition. The resolutions of these controversies appear to also have one common element in that the presumption of only one theory to be correct may not be valid; a synthesis of existing theories may provide a better understanding of all features associated with the phenomenon.

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Documento generato il 12/07/20 alle ore 09:37:34