Loading...
Please wait, while we are loading the content...
Similar Documents
The dominant mode of standing alfven waves at synchronous orbit
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Cummings, W. D. Countee, C. Lyons, D. Wiley II, W. |
| Copyright Year | 1975 |
| Description | Low-frequency oscillations of the earth's magnetic field recorded by the UCLA magnetometer on board ATS-1, have been examined for the six-month interval, January-June, 1968. The initial interpretation, that these oscillations represent the second harmonic of a standing Alfven wave, has been re-examined, and it is concluded that this hypothesis must be withdrawn. Using evidence from OGO-5 and ATS-5, as well as the data from ATS-1, it is argued that the dominant mode at the synchronous orbit must be the fundamental rather than the second harmonic. From 14 instances when the oscillations of distinctly different periods occurred during the same time interval at ATS-1 it is concluded that higher harmonics can exist. The period ratio in 7 of the 14 cases corresponds to the simultaneous occurrence of the second harmonic with the fundamental, and 4 other cases could be identified as the simultaneous occurrence of the fourth harmonic with the fundamental. |
| File Size | 385133 |
| Page Count | 17 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750008096 |
| Archival Resource Key | ark:/13960/t3kx05s6g |
| Language | English |
| Publisher Date | 1975-01-18 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Satellite Orbits Magnetohydrodynamic Waves Ogo-5 Harmonic Oscillation Satellite Observation Ats 1 Magnetic Fields Plasma Density Ats 5 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 |
