A new mechanism of the atmosphere-magnetosphere interaction, which might be called ``acousticmagnetospheric cyclotron accelerator'', is proposed. The idea of this mechanism stems from the fact that strong acoustical perturbations in the ionosphere (e.g., due to earthquakes, thunderstorms, etc.) may generate magnetic disturbances in the magnetosphere. Then, the latter will induce local resonant ...

We demonstrate the feasibility of using a nonconforming nite element method on an unstructured grid in solving a magnetospheric physics problem. We use this approach to construct a global discrete model of the magnetic eld of the magnetosphere that includes the eeects of shielding currents at the outer boundary (the magnetopause). As in the approach of 17] the internal magnetospheric eld model ...

A review of chorus emissions observed on ground-based stations and in the Earth’s magnetosphere is presented. Different approaches to modelling these emissions are discussed. It is pointed out that the most likely energy source of chorus emissions lies in the anisotropic hot electrons in the equatorial magnetosphere. The energy of these electrons is transferred to waves via the electron cyclotr...

The dual technique magnetometer system onboard the Cassini orbiter is described. This instrument consists of vector helium and fluxgate magnetometers with the capability to operate the helium device in a scalar mode. This special mode is used near the planet in order to determine with very high accuracy the interior field of the planet. The orbital mission will lead to a detailed understanding ...

[1] The Earth’s magnetosphere is a spatially extended nonlinear system driven far from equilibrium by the turbulent solar wind. During substorms it exhibits both global and multi-scale features which reconciliation has been a long standing issue. This paper presents a data-derived model of the solar wind-magnetosphere coupling that combines a nonlinear dynamical description of the global featur...

The main goal of this paper is to study the Ultra Low Frequency-UlF magnetic pulsatrons (magnetic micropulsations) in the magnetosphere due to disturbances produced possibly by different mechanisms such as magnetic storms and/or substorms, energetic electron beams and so on. These pulsations are seen as electromagnetic ion cyclotron/kinetic Alfv6n waves with a broad spectrum of frequencies, in ...

Systems science is a relatively new way of studying the magnetosphere. This perspective outlines need for it and how can contribute to our understanding so give more reliable forecasts, predictions, space weather climatologies.