Results 51 to 60 of about 5,320 (271)

Low-altitude measurements of 2–6 MeV electron trapping lifetimes at 1.5 ≤ L ≤ 2.5 [PDF]

open access: yes, 2007
During the Halloween Storm period (October–November 2003), a new Van Allen belt electron population was powerfully accelerated. The inner belt of electrons formed in this process decayed over a period of days to years. We have examined quantitatively the
Baker, D.N.   +4 more
core   +2 more sources

Time-dependent plasmapause motion [PDF]

open access: yesJournal of Geophysical Research, 1971
Time dependent plasmapause motion after increase and decrease in magnetic activity based on analytical model of plasma ...
openaire   +1 more source

New plasmapause model derived from CHAMP field-aligned current signatures [PDF]

open access: yesAnnales Geophysicae, 2013
We introduce a new model for the plasmapause location in the equatorial plane. The determination of the L-shell bounding the plasmasphere is based on magnetic field observations made by the CHAMP satellite in the topside ionosphere.
B. Heilig, B. Heilig, H. Lühr
doaj   +1 more source

Empirical plasmapause models from magnetic indices [PDF]

open access: yesGeophysical Research Letters, 2003
We use a database of CRRES in situ observations of plasmapause crossings to build empirical models of the plasmapause location as a function of geomagnetic indices. Previous models used the maximum value in Kp during the hours to days leading up to the plasmapause crossing.
O'Brien, T.P., Moldwin, M.B.
openaire   +2 more sources

Plasmapause, Convection, and Reconnection [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2019
AbstractBeing one of the first generation of space scientists who entered this field right after the space became accessible to in situ observations, I had good luck of addressing some of the basic questions in this field from the early years of my carrier. These are development of global convection in the magnetosphere when the interplanetary magnetic
openaire   +1 more source

An auroral westward flow channel (AWFC) and its relationship to field-aligned current, ring current, and plasmapause location determined using multiple spacecraft observations [PDF]

open access: yesAnnales Geophysicae, 2007
An auroral westward flow channel (AWFC) is a latitudinally narrow channel of unstable F-region plasma with intense westward drift in the dusk-to-midnight sector ionosphere. AWFCs tend to overlap the equatorward edge of the auroral oval, and their life
M. L. Parkinson   +5 more
doaj   +1 more source

A machine-learning-based electron density (MLED) model in the inner magnetosphere

open access: yesEarth and Planetary Physics, 2022
Plasma density is an important factor in determining wave-particle interactions in the magnetosphere. We develop a machine-learning-based electron density (MLED) model in the inner magnetosphere using electron density data from Van Allen Probes between ...
QingHua Zhou   +7 more
doaj   +1 more source

Response of convection electric fields in the magnetosphere to IMF orientation change [PDF]

open access: yes, 2009
[1] The transient response of convection electric fields in the inner magnetosphere to southward turning of the interplanetary magnetic field (IMF) is investigated using in‐situ electric field observations by the CRRES and Akebono spacecraft.
Brautigam, D.   +7 more
core   +1 more source

Polar observations of electron density distribution in the Earth’s magnetosphere. 2. Density profiles [PDF]

open access: yesAnnales Geophysicae, 2002
Using spacecraft potential measurements of the Polar electric field experiment, we investigate electron density variations of key plasma regions within the magnetosphere, including the polar cap, cusp, trough, plasmapause, and auroral zone.
H. Laakso   +3 more
doaj   +1 more source

Ionospheric Pc1 waves during a storm recovery phase observed by the China Seismo-Electromagnetic Satellite [PDF]

open access: yesAnnales Geophysicae, 2020
During the storm recovery phase on 27 August 2018, the China Seismo-Electromagnetic Satellite (CSES) detected Pc1 wave activities in both the Northern Hemisphere and Southern Hemisphere in the high-latitude, post-midnight ionosphere with a central ...
X. Gou   +15 more
doaj   +1 more source

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