Physical Signatures of Magnetospheric Boundary Layer Processes 1994
DOI: 10.1007/978-94-011-1052-5_25
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Optical Evidence that Modulated Electron Precipitation near the Magnetospheric Boundary Drives High Latitude Pc 3–4 Magnetic Pulsations

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Cited by 11 publications
(4 citation statements)
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“…Most probably, as Engebretson et al (1991a) proposed, wide-band Pi1 pulsations and some Pc3 pulsations are closely related to the fluxes of precipitating particles in the cusp region. Engebretson et al (1994) showed quantitatively that cusp Pc3 magnetic pulsations can be produced by the modulated precipitation of energetic particles. This idea, though not thoroughly theoretically justified yet, explains many interrelationships between auroral, riometric and ULF magnetic observations in the cusp region.…”
Section: Introductionmentioning
confidence: 99%
“…Most probably, as Engebretson et al (1991a) proposed, wide-band Pi1 pulsations and some Pc3 pulsations are closely related to the fluxes of precipitating particles in the cusp region. Engebretson et al (1994) showed quantitatively that cusp Pc3 magnetic pulsations can be produced by the modulated precipitation of energetic particles. This idea, though not thoroughly theoretically justified yet, explains many interrelationships between auroral, riometric and ULF magnetic observations in the cusp region.…”
Section: Introductionmentioning
confidence: 99%
“…A similar conclusion was reached by Engebretson et al . [, ] from observations of dayside Pc3 pulsation activity at near‐cusp latitudes.…”
Section: Introductionmentioning
confidence: 99%
“…To the best of our knowledge, detailed investigation of dayside auroral pulsations in terms of 2‐D structure has never been reported, although Engebretson et al . [, , ] briefly touched upon the presence of localized patches of dayside Pc3 auroral pulsations by using the all‐sky image data taken with a sampling interval of 1 min.…”
Section: Introductionmentioning
confidence: 99%
“…In this model, as described subsequently by Engebretson et al [2006], the peak wave power observed on the ground would map to outer magnetospheric field lines, reaching near the equatorward cusp boundary, but not within the cusp proper. The modulation of the ionospheric currents proposed in this model was demonstrated to result in large enough current systems to cause the observed magnetic perturbations by Engebretson et al [1994b]. A number of subsequent studies [e.g., Engebretson et al , 2000, and references therein] have argued that the spatial distribution of wave power on the ground is more consistent with such an entry mechanism, rather than one which involves a direct propagation of compressional wave power through the dayside magnetopause, and a subsequent propagation of this wave power throughout the magnetosphere with coupling to field‐guided Alfvén modes.…”
Section: Introductionmentioning
confidence: 88%