HYDROMAGNETIC SIGNALS IN THE IONOSPHERE,
Abstract
The equations which govern the propagation of hydromagnetic signals in a spatially inhomogeneous, multi-species, anisotropic ionosphere are derived and applied to several situations. Numerical results for the dependence of the ionospheric refractive indices on height and signal frequency are presented and discussed. Simplified model ionospheres, characterized by the refractive idices, are used to compute the ground-level magnetic signals produced by hydromagnetic waves incident normally from above, upon the collision-dominated lower ionosphere. Magnetic disturbances, which were observed at great distances from the high-altitude Argus nuclear explosions, are considered and are shown to have been probably hydromagnetic in origin. Also, it is shown that, in principle, the ionosphere is capable of supporting hydromagnetic surface waves. The relevant equations for the case of propagation across the geomagnetic field lines are derived and discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1963
- Accession Number
- AD0421842
Entities
People
- E. C. Field
Organizations
- RAND Corporation