Recent studies in micropulsation theory
@article{Southwood1974RecentSI, title={Recent studies in micropulsation theory}, author={David J. Southwood}, journal={Space Science Reviews}, year={1974}, volume={16}, pages={413-425} }
Three recent studies in the theory of micropulsations are described. Attention is given to the behaviour of the signal below the magnetosphere in the ionosphere and atmosphere, to the field line resonance problem and to hot plasma effects on magnetospheric hydromagnetic waves. In each case recent relevant observations are discussed.
37 Citations
Comments on Field Line Resonances and Micropulsations
- Business
- 1975
Summary
Features and limitations of a simple plasma model exhibiting hydro-magnetic transverse mode field line resonances are discussed in relation to geomagnetic micropulsations.
Dispersion relation for magnetosonic waves within the upper atmospheric plasma
- Physics
- 1990
The dispersion relation for magnetosonic waves within the upper atmospheric plasma has been derived. The result can be used to study the variation of the longitudinal and transverse component of…
Research in magnetospheric wave phenomena
- Physics
- 1975
During the last 4 years a number of developments have occurred which have led to an increased understanding of the role of wave phenomena in the physical processes of the magnetosphere. While the…
Propagation properties of hydromagnetic waves in a hot plasma and right-hand polarized PC1 and PC5
- Physics
- 1983
Problems of the physics of geoelectromagnetic waves (a review)
- Geology, Physics
- 2006
Relevant tasks, disputable issues, and unsettled problems of the physics of ultralow-frequency electromagnetic waves of natural origin (a period range of 0.2–600 s) are discussed in the paper. Waves…
Relationships of the characteristics of magnetohydrodynamic waves to plasma density gradients in the vicinity of the plasmapause
- Physics
- 1975
Top side electron density data obtained during the hours of ∼2100–2400 LT from the ionosphere sounder on the Isis 2 satellite are used to give indications of possible latitude gradients in the…
REVIEWS OF TOPICAL PROBLEMS: Ultra-low-frequency electromagnetic waves in the Earth's crust and magnetosphere
- Geology, Physics
- 2007
Research on natural intra- and extraterrestrially produced electromagnetic waves with periods ranging from 0.2 to 600 s is reviewed. The way in which the energy of rock movements transforms into the…
References
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THE large-scale structure of low frequency hydromagnetic waves in the magnetospheric plasma can be understood from observations of micropulsations at the Earth's surface. Signals have to penetrate…
The Effect of Two Periodic Conductivity Anomalies on Geomagnetic Micropulsation Measurements
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- 1973
Summary The effect of induced magnetic fields on the Earth based measurement of micropulsations is examined by means of two simple two-dimensional models, one with six and the other four variable…
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This paper examines in detail a set of large-amplitude pulsations in magnetic-field magnitude and proton fluxes (E > 98 kev) observed by Explorer 26 in connection with a bay event during the magnetic…
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- 1974
A theory of long-period (Pc 3 to Pc 5) magnetic pulsations is presented based on the idea of a steady state oscillation of a resonant local field line that is excited by a monochromatic surface wave…
Latitude‐dependent characteristics of long‐period geomagnetic micropulsations
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- 1971
In summer 1969 a line of 7 magnetic stations was set up in western Canada between the geomagnetic latitudes of 59° and 77°N and within ∼2° of 302°E corrected geomagnetic longitude. This paper…
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