Electron (0.19–3.2 MeV) and proton (0.58–35 MeV) precipitations observed by OHZORA satellite at low latitude zones L = 1.6–1.8

Nagata, K.; Kohno, Toshitake; Murakami, Hiroyuki; Nakamoto, Atsushi; Hasebe, Nobuyuki; Kikuchi, Jun; Doke, T.

doi:10.1016/0032-0633(88)90028-1

Cited by 34 publications

(14 citation statements)

References 12 publications

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“…The first group apparently is related to the same phenomena as the increases of electron fluxes at L ~ 1.7 observed onboard the OHZORA satellite [15]. However, from the standpoint of studying the steady fluxes of trapped and quasitrapped electrons at the drift shells in the region of small values of L, the peak groups with L ~ 1.4 and L 1 .1 are of a greater interest.…”

Section: Resultsmentioning

confidence: 82%

“…These regions correspond to L = 1.71 ± 0.16 . The electron fluxes observed in them are interpreted by the authors of the OHZORA experiment as precipitation from the inner radiation belt [15]. However, currently there is no complete enough information on the spatial structure of the Fluxes of Quasi-trapped Electrons with Energies >0.08 MeV in the Near-Earth Space on Drift Shells L < 2 electron fluxes with sub-relativistic energies in the regions corresponding to lower L (especially in the equator region under the radiation belts ( L < 1.5)) and on their dynamics.…”

Section: Introductionmentioning

confidence: 98%

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Fluxes of Quasi-trapped Electrons with Energies >0.08 MeV in the Near-Earth Space on Drift Shells L < 2

et al. 2005

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We study the characteristics of fluxes of electrons with energy >80 keV in the near-Earth space regions corresponding to the drift shells L = 1.7, 1.4, and 1.1 observed during the entire period of the GRIF experiment onboard the Spectr module of the Mir orbital station from October 1995 to June 1997. The obtained geographic maps of the distribution of electron fluxes at the height of the station flight (400 km) and, also, the estimates of the spectra indicate that the South-Atlantic Anomaly provides for a mechanism of stable replenishment for shells with L < 1.5. The mechanism of stable replenishment of shells with L < 1.5 may be due to the scattering, in the residual atmosphere, of electrons from the inner radiation belt precipitating into the region of the South-Atlantic Anomaly.

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Section: Resultsmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 98%

Fluxes of Quasi-trapped Electrons with Energies >0.08 MeV in the Near-Earth Space on Drift Shells L < 2

et al. 2005

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“…The control hour was 1500 local time (LT) for Christchurch and Irkutsk, and 1200 LT for Brisbane. From the OHZORA satellite, the precipitation of electrons and protons totalling 166 events recorded from March 1984 to September 1986 and listed by Nagata et al (1988) have been used as controls for an H-component SE analysis.…”

Section: Data and Methods Of Analysismentioning

confidence: 99%

“…8(a). Also of interest here are the precipitation events measured by the OHZORA satellite involving energetic electrons and protons (Nagata et al, 1988). Figure 8(b) results from using these OHZORA events as controls in an H-component analysis.…”

Section: D-region Absorptionmentioning

confidence: 99%

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Delayed traveling ionospheric disturbances, especially in equatorial regions, following geomagnetic activity

Bowman

Mortimer

2014

Earth Planet Sp

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For the Western-Pacific region spread-F has been found to occur with delays after geomagnetic activity (GA) ranging from 5 to 10 days as station groups are considered from low midlatitudes to equatorial regions. The statistical (superposed-epoch) analyses also indicate that at the equator the spread-F, and therefore associated medium-scale traveling ionospheric disturbances (MS-TIDs) occur with additional delays around 16, 22 and 28 days representing a 6-day modulation of the delay period. These results are compared with similar delays, including the modulation, for D-region enhanced hydroxyl emission (Shefov, 1969). It is proposed that this similarity may be explained by MS-TIDs influencing both the F and D regions as they travel. Long delays of over 20 days are also found near the equator for airglow-measured MS-TIDs (Sobral et al., 1997). These are recorded infrequently and have equatorward motions, while normally eastward motions are measured at the equator. Also in midlatitudes D-region absorption events have been shown (statistically) to have similar long delays after GA. It is suggested that atmospheric gravity waves and associated MS-TIDs may be generated by some of the precipitations responsible for the absorption. The recording of the delayed spread-F events depends on the GA being well below the average levels around sunset on the nights of recording. This implies that lower upper-atmosphere neutral particle densities are necessary.

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The Role of Proton and Electron “Abnormal” Formations in Radiation Impact on Construction Elements of Spacecrafts

Grachov

Grigoryan

Novikov

et al.

Protection of Materials and Structures From Space Environment

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Electron (0.19–3.2 MeV) and proton (0.58–35 MeV) precipitations observed by OHZORA satellite at low latitude zones L = 1.6–1.8

Cited by 34 publications

References 12 publications

Fluxes of Quasi-trapped Electrons with Energies >0.08 MeV in the Near-Earth Space on Drift Shells L < 2

Fluxes of Quasi-trapped Electrons with Energies >0.08 MeV in the Near-Earth Space on Drift Shells L < 2

Delayed traveling ionospheric disturbances, especially in equatorial regions, following geomagnetic activity

The Role of Proton and Electron “Abnormal” Formations in Radiation Impact on Construction Elements of Spacecrafts

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