Peculiarities of the outer radiation belt dynamics during the strong magnetic storm of May 15, 2005

Tverskaya, L. V.; Ginzburg, E. A.; Иванова, Т. А.; Pavlov, N. N.; Svidsky, P. M.

doi:10.1134/s0016793207060023

Cited by 9 publications

(7 citation statements)

References 14 publications

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“…This event was also identified in previous studies, for example, in Tverskaya et al. (2007), who described it as “the devastation of the outer belt on May 15, 2005”. These two events demonstrate that in some cases, as it was supposed by Reeves et al.…”

Section: Sf Events and Dst Indexsupporting

confidence: 75%

Dynamics of Electron Flux in the Slot Region and Geomagnetic Activity

Nikitina

Trichtchenko

2021

Space Weather

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Electron flux in the slot region was analysed based on highly elliptical orbit satellite data for 1998 -2007 • Frequency and intensity of slot filling events were determined for different levels of geomagnetic activity • Geomagnetic indices better suited for assessment of electron flux in the slot region were identified Accepted ArticleThis article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

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Section: Sf Events and Dst Indexsupporting

confidence: 75%

Dynamics of Electron Flux in the Slot Region and Geomagnetic Activity

Nikitina

Trichtchenko

2021

Space Weather

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“…Figure 1 shows that on 15 May, 2005, southward directed IMF with accompanying strong solar wind flow pressure drove a major storm, which was marked by a sudden commencement (~0600 UT). This event was accompanied, near its commencement, by two series of sub-storms (at 0608 and 0822 UT), both with amplitude AE ~1800 nT (Tverskaya et al, 2007). According to the AE index ( Figure 1), there was another substorm onset at 0736 UT with amplitude AE ~1400 nT.…”

Section: Introductionmentioning

confidence: 96%

The causal sequence investigation of the ring current ion-flux increasing and the magnetotail ion injection during a major storm

McKenna‐Lawlor

Cao

et al. 2015

Sci. China Earth Sci.

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Comprehensive records are available in ENA data of ring current activity recorded by the NUADU instrument aboard TC-2 on 15 May, 2005 during a major magnetic storm (which incorporated a series of substorms). Ion fluxes at 4-min temporal resolution derived from ENA data in the energy ranges 50-81 and 81-158 keV are compared with in situ particle fluxes measured by the LANL-SOPA instruments aboard LANL-01, LANL-02, LANL-97, and LANL-84 (a series of geostationary satellites that encircle the equatorial plane at ~6.6 R E ). Also, magnetic fields measured simultaneously by the magetometers aboard GOES-10 and GOES-12 (which are also geostationary satellites) are compared with the particle data. It is demonstrated that ion fluxes in the ring current were enhanced during geomagnetic field tailward stretching in the growth phases of substorms rather than after Earthward directed dipolarization events. This observation, which challenges the existing concept that ring current particles are injected Earthward from the magnetotail following dipolarization events, requires further investigation using a large number of magnetic storm events. . 2016. The causal sequence investigation of the ring current ion-flux increasing and the magnetotail ion injection during a major storm.

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“…Figure 1 shows that the storm sudden commencement was accompanied at ∼0630 UT by a substorm with amplitude AL = −1800 nT. The main phase of this storm concluded with |Dst| max = 256 nT at ∼0900 UT [Tverskaya et al, 2007].…”

Section: Magnetic Storm Of 15 May 2005 and Contemporaneous Nuadu Ena mentioning

confidence: 97%

“…[4] The Neutral Atom Detector Unit (NUADU) [McKenna-Lawlor et al, 2004] aboard China's TC-2 mission has, from the launch of the spacecraft in 2004 up until the end of the mission in 2009, monitored the magnetospheric ENA emissions that accompanied successive geomagnetic storms. The motivation of the present paper is first to extract quantitatively magnetospheric ion flux distributions from NUADU/ENA data recorded during the main phase of a representative magnetic storm (15 May 2005) using an inversion technique specially developed for the analysis of NUADU data [Lu et al, 2008;McKenna-Lawlor et al, 2010]. These retrieved ion distributions are then compared with contemporaneous in situ measurements made by (identical) LANL/SOPA particle detectors flown aboard a series of geosynchronous satellites that encircle the equatorial plane near the outer radiation belt at about 6.6 R E [Belian et al, 1992].…”

Section: Introductionmentioning

confidence: 99%

Comparisons between ion distributions retrieved from ENA images of the ring current and contemporaneous, multipoint ion measurements recorded in situ during the major magnetic storm of 15 May 2005

McKenna‐Lawlor

Barabash

et al. 2010

J. Geophys. Res.

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[1] The Neutral Atom Detector Unit (NUADU) aboard the TC-2 spacecraft recorded energetic neutral atom (ENA) image data for >3 h during part of the main and recovery phases of a major magnetic storm on 15 May 2005. A custom designed, constrained linear inversion method was applied to retrieve ring current ion distributions in the ENA records out to L = 6.6. Comparisons were then made between the ion fluxes retrieved from these ENA data (energy ranges 50-81 keV and 81-158 keV) and complementary, contemporaneous particle fluxes measured in situ by Synchronous Orbit Particle Analyzer (SOPA) instruments aboard a series of geosynchronous satellites that were launched to encircle the equatorial plane at L ∼ 6.6 by the Los Alamos National Laboratory (LANL). The ENA data revealed the development of two emission peaks during the main phase of the storm which corresponded to the arrival from the magnetotail of a pair of particle injections. These injections reached, in each case, maximum value before the corresponding AL index amplitude peak was attained. The main phase of the storm concluded (Dst ≈ −256 nT) in the aftermath of this event pair, and the ring current ion fluxes thereafter gradually decayed over several hours (the storm recovery phase). This is the first time that the linear inversion method developed for NUADU data has been globally validated using multipoint in situ measurements made at different magnetic local times. It was found that the higher the derived flux values were on the duskside/nightside, the closer they were to the in situ measurements. The retrieved fluxes obtained on the duskside/nightside tended, however, to be still somewhat underestimated since the ENA measurements concerned were made around the outer edge of the ring current at an altitude where the magnetic field in the inner magnetosphere deviates from that dipole configuration assumed in the inversion procedure to pertain there. The two methods utilized to study ions during a large magnetic storm are complementary in that the retrieved ion fluxes provide high time resolution information concerning the changing, large-scale structure of ring current events, whereas in situ flux sampling presents "measurement truth" at particular locations within individual ring currents.

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Peculiarities of the outer radiation belt dynamics during the strong magnetic storm of May 15, 2005

Cited by 9 publications

References 14 publications

Dynamics of Electron Flux in the Slot Region and Geomagnetic Activity

Dynamics of Electron Flux in the Slot Region and Geomagnetic Activity

The causal sequence investigation of the ring current ion-flux increasing and the magnetotail ion injection during a major storm

Comparisons between ion distributions retrieved from ENA images of the ring current and contemporaneous, multipoint ion measurements recorded in situ during the major magnetic storm of 15 May 2005

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