The major thrust of this dissertation was to test an original method for resolving the current system associated with polar magnetic substorms from ground based magnetic observations. This method is based on a general technique of inversion review by Wiggins in 1972 and appears to give quite satisfactory results, at least, when the current system considered is simulated by a three-dimensional current system consisting of field-aligned currents flowing down to the ionosphere westward in the ionosphere, and back again to the magnetosphere. Before attempting the inversion of actual polar magnetic substorm data, the problems arising from the fact that the Earth is an electrical conductor which modifies the ground based magnetic signature of any...
The geomagnetic field variations measured at the surface of the Earth are composed of both internal...
Based on the output data of the magnetogram inversion technique, we analyze the dynamics of the Pede...
We present a technique for determination of the position and extent of the current systems present d...
The major thrust of this dissertation was to test an original method for resolving the current syste...
The classic substorm current wedge model represents ground and space magnetic perturbations measured...
The ionosphere is a region of the upper atmosphere where a significant rate of photo-ionisation from...
Summary. It is now well accepted that magnetic field perturbations associ-ated with polar magnetic s...
Determination of the distribution of electric currents at the ionospheric level by a ground-based ma...
A computer code has been developed for calculating ground magnetic perturbations due to a substorm c...
The past four decades have seen a considerable amount of research on the study of magnetospheric su...
The possibility of separating the effects of ionospheric currents from those of field-aligned curren...
A two-dimensional magnetometer array was progressively installed in Scandinavia, from 1974 onwards, ...
Dissertation (Ph.D.) University of Alaska Fairbanks, 1983During the International Magnetospheric Stu...
No average status can be defined for the sources of the external magnetic field over the polar caps,...
In recent years, quantitative analysis of the magnetosphere-ionosphere coupling and electrodynamics ...
The geomagnetic field variations measured at the surface of the Earth are composed of both internal...
Based on the output data of the magnetogram inversion technique, we analyze the dynamics of the Pede...
We present a technique for determination of the position and extent of the current systems present d...
The major thrust of this dissertation was to test an original method for resolving the current syste...
The classic substorm current wedge model represents ground and space magnetic perturbations measured...
The ionosphere is a region of the upper atmosphere where a significant rate of photo-ionisation from...
Summary. It is now well accepted that magnetic field perturbations associ-ated with polar magnetic s...
Determination of the distribution of electric currents at the ionospheric level by a ground-based ma...
A computer code has been developed for calculating ground magnetic perturbations due to a substorm c...
The past four decades have seen a considerable amount of research on the study of magnetospheric su...
The possibility of separating the effects of ionospheric currents from those of field-aligned curren...
A two-dimensional magnetometer array was progressively installed in Scandinavia, from 1974 onwards, ...
Dissertation (Ph.D.) University of Alaska Fairbanks, 1983During the International Magnetospheric Stu...
No average status can be defined for the sources of the external magnetic field over the polar caps,...
In recent years, quantitative analysis of the magnetosphere-ionosphere coupling and electrodynamics ...
The geomagnetic field variations measured at the surface of the Earth are composed of both internal...
Based on the output data of the magnetogram inversion technique, we analyze the dynamics of the Pede...
We present a technique for determination of the position and extent of the current systems present d...