Results 71 to 80 of about 357,993 (360)

Estimating the Impacts of Radiation Belt Electrons on Atmospheric Chemistry Using FIREBIRD II and Van Allen Probes Observations

Journal of Geophysical Research: Atmospheres, 2021
This study considers the impact of electron precipitation from Earth's radiation belts on atmospheric composition using observations from the NASA Van Allen Probes and NSF Focused Investigations of Relativistic Electron Burst Intensity, Range, and ...
K. Duderstadt, C. L. Huang, H. Spence, S. Smith, J. Blake, A. Crew, A. Johnson, D. Klumpar, Daniel R. Marsh, J. Sample, M. Shumko, F. Vitt   +11 more
semanticscholar   +1 more source

Modeling inward diffusion and slow decay of energetic electrons in the Earth\u27s outer radiation belt [PDF]

, 2015
A new 3-D diffusion code is used to investigate the inward intrusion and slow decay of energetic radiation belt electrons (\u3e0.5 MeV) observed by the Van Allen Probes during a 10 day quiet period on March 2013.
Angelopoulos, V., Baker, D. N., Blake, J. B., Claudepierre, S., Fennell, J. F., Henderson, M. G., Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Li, W., Ma, Q., Ni, B., Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +14 more
core   +4 more sources

The Response of Earth's Electron Radiation Belts to Geomagnetic Storms: Statistics From the Van Allen Probes Era Including Effects From Different Storm Drivers

Journal of Geophysical Research: Space Physics, 2019
A statistical study was conducted of Earth's radiation belt electron response to geomagnetic storms using NASA's Van Allen Probes mission. Data for electrons with energies ranging from 30 keV to 6.3 MeV were included and examined as a function of L‐shell,
D. Turner, E. Kilpua, H. Hietala, S. Claudepierre, T. O'Brien, J. F. Fennell, J. Blake, A. Jaynes, S. Kanekal, D. N. Baker, H. Spence, J. Ripoll, G. Reeves   +12 more
semanticscholar   +1 more source

Outer radiation belt and inner magnetospheric response to sheath regions of coronal mass ejections: a statistical analysis [PDF]

Annales Geophysicae, 2020
The energetic electron content in the Van Allen radiation belts surrounding the Earth can vary dramatically at several timescales, and these strong electron fluxes present a hazard for spacecraft traversing the belts.
M. M. H. Kalliokoski, E. K. J. Kilpua, A. Osmane, D. L. Turner, A. N. Jaynes, L. Turc, H. George, M. Palmroth, M. Palmroth   +8 more
doaj   +1 more source

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
openaire   +3 more sources

Simultaneous Observations of EMIC‐Induced Drifting Electron Holes (EDEHs) in the Earth's Radiation Belt by the Arase Satellite, Van Allen Probes, and THEMIS

Geophysical Research Letters, 2022
We present an observation of rapid flux depressions in relativistic electrons, which is referred to as “EMIC‐induced drifting electron holes (EDEHs).” The Arase, Van Allen Probes, and THEMIS detected simultaneously electron flux fluctuations.
S. Nakamura, Y. Miyoshi, K. Shiokawa, Y. Omura, T. Mitani, T. Takashima, N. Higashio, I. Shinohara, T. Hori, S. Imajo, A. Matsuoka, F. Tsuchiya, A. Kumamoto, Y. Kasahara, M. Shoji, H. Spence, V. Angelopoulos   +16 more
semanticscholar   +1 more source

Formation of the oxygen torus in the inner magnetosphere: Van Allen Probes observations [PDF]

, 2015
We study the formation process of an oxygen torus during the 12–15 November 2012 magnetic storm, using the magnetic field and plasma wave data obtained by Van Allen Probes.
De Pascuale, S., Keika, K., Kletzing, C. A., Kurth, W. S., Larsen, Bradford, MacDowall, R. J., Nakano, S., Nose, M., Oimatsu, S., Reeves, Geoffrey, Smith, Charles W., Spence, Harlan E.   +11 more
core   +3 more sources

An Empirical Model of the Equatorial Electron Pitch Angle Distributions in Earth's Outer Radiation Belt

Space Weather, 2022
In this study, we present an empirical model of the equatorial electron pitch angle distributions (PADs) in the outer radiation belt based on the full data set collected by the Magnetic Electron Ion Spectrometer (MagEIS) instrument onboard the Van Allen ...
Artem Smirnov, Yuri Y. Shprits, Hayley Allison, Nikita Aseev, Alexander Drozdov, Peter Kollmann, Dedong Wang, Anthony Saikin   +7 more
doaj   +1 more source

Magnetospheric Mass Density as Determined by ULF Wave Analysis

Frontiers in Astronomy and Space Sciences, 2021
The technique to estimate the mass density in the magnetosphere using the physical properties of observed magnetohydrodynamic waves is known as magnetoseismology.
Kazue Takahashi, Richard E. Denton 
doaj   +1 more source

Competing source and loss mechanisms due to wave-particle interactions in Earth’s outer radiation belt during the 30 September to 3 October 2012 geomagnetic storm [PDF]

, 2014
Drastic variations of Earth’s outer radiation belt electrons ultimately result from various competing source, loss, and transport processes, to which wave-particle interactions are critically important.
Angelopoulos, V., Baker, D. N., Blake, J. B., Bortnik, J., Claudepierre, S., Henderson, M. G., Huang, Chia-Lin L., Kletzing, C A., Kurth, W. S., Li, W., Ma, Q., Mann, I. R., Morley, S. K., Ni, B., Reeves, Geoffrey, Rodriguez, J. V., Spence, Harlan E., Thorne, R. M., Turner, D. L., Usanova, M.   +19 more
core   +3 more sources