The ionospheric effects in D-layer and solar proton precipitation zones during the 16 February 1984 event

Beloglazov, M. I.; Beloglazova, G. P.; Vashenyuk, É. V.; Петрова, Г. А.; Шумилов, О. И.; Shishaev, V.A.; Zabavina, I. N.; Nesterov, V. I.

doi:10.1016/0032-0633(90)90154-i

Cited by 5 publications

(1 citation statement)

References 16 publications

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“…Subsequently, Mendes and Ananthakrishnan [1972] calculated the relative parts of the examined TRGCPs affected by the SPEs (based on two events), as well as the VLF reflection height change (that reached an enormous 23 km in one of the TRGCPs), due to these events. Beloglazov et al [1990] examined a single SPE that occurred during 1984 using VLF NB, riometer, and satellite data, and concluded that the electron density at an altitude of 45 km steeply rose to 1000 km -1 during the event. In addition, they demonstrated the existence of two regions and mechanisms responsible for the ionization produced by the protons; the direct impact zone in the polar cap's center, and the day-evening auroral sector affected by SPE-driven precipitation of quasi-trapped magnetospheric electrons.…”

Section: Solar Proton Eventsmentioning

confidence: 99%

On the Use of VLF Narrowband Measurements to Study the Lower Ionosphere and the Mesosphere–Lower Thermosphere

Silber

Price

2016

Surv Geophys

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The ionospheric D-region (~60 km up to ~95 km) and the corresponding neutral atmosphere, often refered to as the mesosphere-lower-thermosphere (MLT) are challenging and costly to probe in-situ. Therefore, remote sensing techniques have been developed over the years. One of these is based on VLF (Very low frequency, 3-30 kHz) electromagnetic waves generated by various natural and manmade sources. VLF waves propagate within the Earth-ionosphere waveguide, and are extremely sensitive to perturbations occurring in the D-region along their propagation path. Therefore, measurements of these signals serve as an inexpensive remote sensing technique for probing the lower ionosphere and the MLT region. This paper reviews the use of VLF narrowband (NB) signals (generated by man-made transmitters) in the study of the D-region and the MLT for over 90 years. The fields of research span time scales from microseconds to decadal variability, and incorporate lightning-induced short term perturbations; extraterrestrial radiation bursts; energetic particle precipitation events; solar eclipses; lower atmospheric waves penetrating into the D-region; sudden stratospheric warming events; the annual oscillation; the solar cycle; and finally, the potential use of VLF NB measurements as an anthropogenic climate change monitoring technique.

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Section: Solar Proton Eventsmentioning

confidence: 99%

On the Use of VLF Narrowband Measurements to Study the Lower Ionosphere and the Mesosphere–Lower Thermosphere

Silber

Price

2016

Surv Geophys

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Quasi‐drift effects of high‐energy solar cosmic rays in the magnetosphere

Шумилов¹,

Vashenyuk²,

Henriksen³

1993

J. Geophys. Res.

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The structure of high-energy solar proton penetration zones in the polar and subpolar regions using data from riometers, transpolar satellite DMSP-F6, and neutron monitors during an extremely anisotropic solar proton event on February 16, 1984, has been studied. Particular emphasis was placed upon interpretation of the solar proton intensity maximum located at the auroral and nearby latitudes. Precipitation of quasi-trapped particles drifting along the latitudinal direction from the entry site of the anisotropic flux at the dawnside of the magnetosphere is discussed as a cause of this maximum. Observations related to the acceleration, injection, and interplanetary propagation of energetic protons during the solar cosmic ray event on February 16, 1984, J. Geophys. Res., 93, 7206, 1988. Durney, A. C., G. E. Motfill, and J. J. Quenby, Entry of high energy solar protons into the distant geomagnetic tail, jr. Geophys. Res., 77, 3345, 1972. Vashenyuk, E. V., O. I. Shumilov, N. I. Panteleeva, H. Kananen, J. Kangas, and H. Tanskanen, Anisotropy ,of relativistic solar cosmic rays from the data of closely spaced neutron monitor stations in Apatity and Oulu,

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Variations of vlw-phase and earthquake forecast possibility

Nesterov

Application of the Conversion Research Results for International Cooperation. SIBCONVERS'99. Third International Symposium. Pro

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The ionospheric effects in D-layer and solar proton precipitation zones during the 16 February 1984 event

Cited by 5 publications

References 16 publications

On the Use of VLF Narrowband Measurements to Study the Lower Ionosphere and the Mesosphere–Lower Thermosphere

On the Use of VLF Narrowband Measurements to Study the Lower Ionosphere and the Mesosphere–Lower Thermosphere

Quasi‐drift effects of high‐energy solar cosmic rays in the magnetosphere

Variations of vlw-phase and earthquake forecast possibility

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