Results 21 to 30 of about 6,894 (155)

Dynamics of the inner electron radiation belt: A review

Earth and Planetary Physics, 2023
The Van Allen radiation belts are an extraordinary science discovery in the Earth magnetosphere and consist of two electron belts. The inner Van Allen belt contains electrons of 10s to 100s keV; the outer belt consists mainly of 0.1−10 MeV electrons ...
YuXuan Li, Chao Yue, Ying Liu, Qiu-Gang Zong, Hong Zou, YuGuang Ye   +5 more
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Statistical Properties of Plasmaspheric Hiss From Van Allen Probes Observations [PDF]

Journal of Geophysical Research: Space Physics, 2018
AbstractVan Allen Probes observations are used to statistically investigate plasmaspheric hiss wave properties. This analysis shows that the wave normal direction of plasmaspheric hiss is predominantly field aligned at larger L shells, with a bimodal distribution, consisting of a near‐field aligned and a highly oblique component, becoming apparent at ...
D. P. Hartley, C. A. Kletzing, O. Santolík, L. Chen, R. B. Horne   +4 more
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Analytical Chorus Wave Model Derived from Van Allen Probe Observations [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractChorus waves play an important role in the dynamic evolution of energetic electrons in the Earth's radiation belts and ring current. Using more than 5 years of Van Allen Probe data, we developed a new analytical model for upper‐band chorus (UBC; 0.5fce < f < fce) and lower‐band chorus (LBC; 0.05fce < f < 0.5fce) waves, where fce is ...
Dedong Wang, Yuri Y. Shprits, Irina S. Zhelavskaya, Oleksiy V. Agapitov, Alexander Y. Drozdov, Nikita A. Aseev   +5 more
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Morningside Pi2 Pulsation Observed in Space and on the Ground [PDF]

Journal of Astronomy and Space Sciences, 2015
In this study, we examined a morningside Pi2 pulsation, with a non-substorm signature, that occurred in very quiet geomagnetic conditions (Kp = 0) at 05:38 UT on December 8, 2012, using data obtained by Van Allen Probes A and B (VAP-A and VAP-B ...
Essam Ghamry
doaj   +1 more source

Temperature of the plasmasphere from Van Allen Probes HOPE [PDF]

Journal of Geophysical Research: Space Physics, 2017
AbstractWe introduce two novel techniques for estimating temperatures of very low energy space plasmas using, primarily, in situ data from an electrostatic analyzer mounted on a charged and moving spacecraft. The techniques are used to estimate proton temperatures during intervals where the bulk of the ion plasma is well below the energy bandpass of ...
K. J. Genestreti, J. Goldstein, G. D. Corley, W. Farner, L. M. Kistler, B. A. Larsen, C. G. Mouikis, C. Ramnarace, R. M. Skoug, N. E. Turner   +9 more
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Van Allen Probes observations of direct wave‐particle interactions [PDF]

Geophysical Research Letters, 2014
Quasiperiodic increases, or “bursts,” of 17–26 keV electron fluxes in conjunction with chorus wave bursts were observed following a plasma injection on 13 January 2013. The pitch angle distributions changed during the burst events, evolving from sinN(α) to distributions that formed maxima at α = 75–80°, while fluxes at 90° and
Fennell, Joseph F., Roeder, J., Kurth, W. S., Henderson, M. G., Larsen, B. A., Hospodarsky, G. B., Wygant, J. R., Claudepierre, S., Blake, J. B., Spence, Harlan E., Clemmons, J. H., Funsten, H. O., Kletzing, C A., Reeves, Geoffrey   +13 more
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Prediction of Dynamic Plasmapause Location Using a Neural Network

Space Weather, 2021
As a common boundary layer that distinctly separates the regions of high‐density plasmasphere and low‐density plasmatrough, the plasmapause is essential to comprehend the dynamics and variability of the inner magnetosphere.
Deyu Guo, Song Fu, Zheng Xiang, Binbin Ni, Yingjie Guo, Minghang Feng, Jianguang Guo, Zejun Hu, Xudong Gu, Jianan Zhu, Xing Cao, Qi Wang   +11 more
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Van Allen Probes Observations of Oxygen Ions at the Geospace Plume

Frontiers in Astronomy and Space Sciences, 2021
The geospace plume couples the ionosphere, plasmasphere, and magnetosphere from sub-auroral regions to the magnetopause, on polar field lines, and into the magnetotail.
John C. Foster, Philip J. Erickson
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Simulations of Van Allen Probes Plasmaspheric Electron Density Observations [PDF]

Journal of Geophysical Research: Space Physics, 2018
AbstractWe simulate equatorial plasmaspheric electron densities using a physics‐based model (Cold PLasma, CPL; used in the ring current‐atmosphere interactions model) of the source and loss processes of refilling and erosion driven by empirical inputs.
S. De Pascuale, V. K. Jordanova, J. Goldstein, C. A. Kletzing, W. S. Kurth, S. A. Thaller, J. R. Wygant   +6 more
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Statistical study and corresponding evolution of plasmaspheric plumes under different levels of geomagnetic storms [PDF]

Annales Geophysicae, 2022
Using observations of Van Allen Probes, we present a statistical study of plasmaspheric plumes in the inner magnetosphere. Plasmaspheric plumes tend to occur during the recovery phase of geomagnetic storms.
H. Li, T. Fu, R. Tang, R. Tang, Z. Yuan, Z. Yang, Z. Ouyang, X. Deng   +7 more
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