plasmasphere


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plasmasphere

(plaz -mă-sfeer) A small toroidal region of plasma, primarily protons and electrons, that lies within the Earth's magnetosphere above the ionosphere. The plasma is produced by the action of the Sun's ultraviolet radiation and X-rays on molecules, etc., in the upper atmosphere. The plasmasphere is bounded by the plasmapause, where the plasma density drops abruptly.

plasmasphere

[′plaz·mə‚sfir]
(geophysics)
A region of relatively dense, cold plasma surrounding the earth and extending out to altitudes of approximately 2 to 6 earth radii, composed predominantly of electrons and protons, with thermal energies not exceeding several electronvolts.
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Nevertheless, the goal remains to create a world-class, operational solar radar capable of monitoring not only solar echoes despite noisy radio bursts but also the ionosphere, plasmasphere, radiation belts, and the magnetosphere.
In Part 2 the system will be expanded to include a far wider set of models of the solar corona the interplanetary medium the Earth s magnetosphere plasmasphere radiation belts ionosphere and thermosphere.
Another scenario is that the giant cloud of cold, electrically charged gas called the plasmasphere, which begins about 600 miles above Earth and stretches thousands of miles into the outer Van Allen belt, is scattering the electrons at the boundary with low frequency, electromagnetic waves that create a plasmapheric "hiss," said Baker.
The Earth's ionosphere model: international reference ionosphere (IRI) model and extensions to the plasmasphere.
It also carries a telescope to observe the dense torus of ion-ized gas encircling Earth, called the plasmasphere.
The report said that for the first time in human history, a telescope will also be set up on the moon to observe the plasmasphere over the Earth and survey the moon surface through radar.
Discoveries: plasmaspheric shoulders and notches, proton auroras in unexpected places, surprisingly slow plasmasphere rotation, a hot oxygen geocorona and a secondary interstellar neutral atom stream.
Another IMAGE device has taken the first global picture of the electrically charged layer, called the plasmasphere, that extends into space from Earth's upper atmosphere.
Farther out, the ionosphere feeds the plasmasphere, a donut-shaped region of helium and hydrogen ions plus electrons roaming at densities so low that they have essentially no collisions.
Goldstein, 35, is a space physicist specializing in the structure and dynamics of the Earth's plasmasphere.
Components that are capped with NUOPC and that are in the process of being introduced into NEMS include the WaveWatch III model (Tolman 2002), the Ionosphere Plasmasphere Electrodynamics (IPE) model [based on an earlier model described in Fuller-Rowell et al.
TOPCAT, a project from the University of Bath, will be the first GPS device aimed at measuring space weather conditions in the plasmasphere (the areas of space just beyond the eartha s atmosphere).