Pressure changes in the plasma sheet during substorm injections
| Autor: | Götz Paschmann, Eberhard Möbius, Wolfgang Baumjohann, D. C. Hamilton, L. M. Kistler |
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| Rok vydání: | 1992 |
| Předmět: |
Physics
Atmospheric Science Range (particle radiation) Ecology Plasma sheet Paleontology Soil Science Magnetosphere Forestry Geophysics Plasma Aquatic Science Oceanography Solar wind Space and Planetary Science Geochemistry and Petrology Physics::Space Physics Substorm Earth and Planetary Sciences (miscellaneous) Total pressure Atomic physics Pressure gradient Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Geophysical Research: Space Physics. 97:2973-2983 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/91ja02802 |
| Popis: | Data from the CHEM instrument on AMPTE CCE, data from the 3D plasma instrument and the SULEICA instrument on AMPTE IRM, and magnetometer data from both spacecraft are used to determine the particle pressure and total pressure as a function of radial distance in the plasma sheet for periods before and after the onset of substorm-associated ion enhancements over the range 7-19 RE. Events were chosen that occurred during times of increasing magnetospheric activity, as determined by an increasing AE index, in which a sudden increase, or 'injection', of energetic particle flux is observed. It is shown that the simultaneous appearance of energetic particles and changes in the magnetic field results naturally from pressure balance and does not necessarily indicate that the local changing field is accelerating the particles. |
| Databáze: | OpenAIRE |
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