Results 21 to 30 of about 2,277 (215)
Internal source of plasmaspheric hiss on Earth
地球与行星物理论评, 2022 Plasmasphere is an upward extension of the ionosphere at low and middle latitudes along the closed magnetic field lines rooted in the Earth, where the trapped whistler-mode waves in the frequency range from tens to thousands of Hertz are named as ...
Zhenpeng Su +3 more
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He+ dominance in the plasmasphere during geomagnetically disturbed periods: 1. Observational results [PDF]
, 2002 Observations made by the DMSP 1710 satellite during the recovery phase from geomagnetic disturbances in June 1991 show regions of He+ dominance around 830 km altitude at 09:00 MLT.
Wilford, C. R. +13 more
core +1 more source
A new climatological electron density model for supporting space weather services
Journal of Space Weather and Space Climate, 2022 The ionosphere is the ionized part of the Earth’s atmosphere, ranging from about 60 km up to several Earth radii, whereas the upper part above about 1000 km height up to the plasmapause is usually called the plasmasphere.
Hoque Mohammed Mainul +2 more
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Journal of Geophysical Research: Space Physics, 2021 AbstractWe study packages of VLF whistler‐mode waves observed by the Van Allen Probes satellites in the equatorial plasmasphere. We demonstrate that the main mechanism providing localization of these waves inside relatively broad (>1 RE across the ambient magnetic field) magnetospheric regions is a combined effect of the transverse gradients in the ...
openaire +2 more sources
Monitoring the plasmapause using geomagnetic field line resonances [PDF]
, 2004 This paper discusses the use of ground magnetometer data to derive plasma mass density profiles of the dayside plasmapause region with spatial and temporal resolution in the range 0.15-0.4 R-E and 20-60 min.
Menk, F.W. +5 more
core +1 more source
Photoelectron Flux Buildup in the Plasmasphere [PDF]
, 1978 Processes which confine photoelectrons to the plasmasphere (e.g., collisional backscattering from the thermosphere and magnetic trapping due to pitch angle redistribution through Coulomb collisions in the plasmasphere) tend to increase the steady state ...
Wickwar, Vincent B. +5 more
core +3 more sources
In situ and ground-based intercalibration measurements of plasma density at l = 2.5 [PDF]
, 2003 [1] Two independent ground-based experiments and two satellite-borne experiments are used to interpret the changes in plasmaspheric composition at the same point in space during moderate geomagnetic activity on 22 January and 14 February 2001.
Bailey, G.J. +12 more
core +1 more source
Does Ring Current Heating Generate the Observed O+ Shell?
Geophysical Research Letters, 2020 The Naval Research Laboratory (NRL) Sami3 is Also a Model of the Ionosphere (SAMI3) ionosphere/plasmasphere code is used to examine the effect of ring current heating during a storm. With a ring current heating function added to SAMI3, a cold thermal (
J. Krall, J. D. Huba, M.‐C. Fok
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The interactions between ULF waves and cold charged particles in the Earth's magnetosphere
地球与行星物理论评, 2022 In the solar wind-magnetosphere coupling processes, many kinds of plasma waves can be excited in the Earth's magnetosphere including ULF waves, hiss waves, chorus waves, etc. Among these waves, ULF waves are featured by the lowest wave frequency (1 mHz～1
Jie Ren, Qiugang Zong
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Premidnight plasmaspheric “plumes” [PDF]
Journal of Geophysical Research: Space Physics, 1997 To explain observations of brief intervals of cold, dense plasma by geosynchronous satellites in the midnight sector prior to or during substorm onset, it has recently been proposed that dense plasmaspheric plasma is drawn out to geosynchronous orbit in the premidnight region by inductive electric fields during the growth phase of a geomagnetic ...
Daniel M. Ober +6 more
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