Propagation of hydromagnetic waves in magnetosphere

Propagation of whistler mode waves with a modulated frequency in the magnetosphere

[1] This paper presents results from experimental and numerical studies of the propagation of whistler mode waves in the Earth’s magnetosphere. An experiment conducted at the High Frequency Active Auroral Research Program (HAARP) on 16 March 2008 demonstrates that ionospherically generated waves with particular frequency‐time formats are amplified on their pass from HAARP to the conjugate locat...

The Structure of Hydromagnetic Shock Waves

Es werden Wellen in einem quasi-neutralen Gas untersucht, das Ionen und Elektronen enthält und genügend kalt ist, so daß die thermischen Bewegungen vernachlässigt werden können. Außerdem werden Zusammenstöße zwischen den Teilchen vernachlässigt, jedoch nicht die Trägheitseffekte des elektrischen Stromes. Die nicht-linearen Gleichungen für unendlich ausgedehnte, ebene Kompressionswellen, die sic...

The Rotation of Hydromagnetic Waves by the Ionosphere

We show that the Doppler shift on whistler mode signals from VLF transmitters may be used to infer the magnetic field of an hydromagnetic wave above the ionosphere in the magnetosphere. This inferred field can then be compared with that measured on the ground. We examine one event in detail and show the data imply that a it/2 rotation of the orientation of the wave ellipse has occurred between ...

Properties of Fast Forward Shock Caused Waves in the Magnetosphere

The study of properties of propagation of interplanetary shocks into the Earth’s magnetosphere is significant to improve our understanding of the Sun-Earth system. The interplanetary shocks interact with the bow shock and cause pressure pulses on the magnetopause and its movement, launching different waves into the magnetosphere. In our study we used a set of more than 40 fast forward shocks to...

Interaction of Energetic Ring Current Protons with Magnetospheric Hydromagnetic Waves