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The structure of the magnetosphere as deduced from magnetospherically reflected whistlers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Edgar, B. C. |
| Copyright Year | 1972 |
| Description | Very low frequency (VLF) electromagnetic wave phenomenon called the magnetospherically reflected (MR) whistler was investigated. VLF (0.3 to 12.5 kHz) data obtained from the Orbiting Geophysical Observatories 1 and 3 from October 1964 to December 1966 were used. MR whistlers are produced by the dispersive propagation of energy from atmospheric lightning through the magnetosphere to the satellite along ray paths which undergo one or more reflections due to the presence of ions. The gross features of MR whistler frequency-time spectrograms are explained in terms of propagation through a magnetosphere composed of thermal ions and electrons and having small density gradients across L-shells. Irregularities observed in MR spectra were interpreted in terms of propagation through field-aligned density structures. Trough and enhancement density structures were found to produce unique and easily recognizable signatures in MR spectra. Sharp cross-field density dropoff produces extra traces in MR spectrograms. |
| File Size | 6812402 |
| Page Count | 193 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730007617 |
| Archival Resource Key | ark:/13960/t3tt9cs13 |
| Language | English |
| Publisher Date | 1972-03-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Earth Magnetosphere Ogo-a Ogo-3 Lightning Very Low Frequencies Ions Whistlers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
