In this paper, we show that the electric field generated by a lightning return stroke to a tall structure can change polarity at very close distance range, typically at distances of about one tenth the height or so of the struck object. This change in the polarity seems to be a specific signature of the very close vertical electric field. Two different theoretical explanations of such an inversion of polarity are given, the first based on general field equations for a perfectly conducting ground and the second based on the equation derived by Baba and Rakov (2005a) for the case when the return stroke wavefront speed is assumed to be equal to the speed of light and the reflection coefficient at the top of the tall structure is zero. A simple...
We present measurements of nearby vertical and horizontal electric fields from leaders and return st...
In this paper it is shown how the finitely conducting ground modifies the signature of the radiation...
The knowledge of lightning current parameters comes essentially from direct measurements obtained us...
In this paper, we show that the electric field generated by a lightning return stroke to a tall stru...
New general expressions relating lightning return stroke currents and far radiated electric and magn...
In this paper, an analysis of electric and magnetic fields radiated by lightning first and subsequen...
We discuss in this paper the influence of the presence of an elevated strike object on the peak of t...
Measurements of return stroke currents on instrumented towers reveal the existence of reflections at...
In this paper, analytical expressions relating far fields and currents associated with lightning str...
none9In this paper, analytical expressions relating far fields and currents associated with lightnin...
In this paper we present and discuss measurements of electric (vertical and radial) and magnetic fie...
In this paper, the radiated electric and magnetic fields above a perfectly conducting ground at diff...
none9We discuss in this paper the influence of the presence of an elevated strike object on the peak...
The paper is a contribution to the studies of factors that can affect electric (E) and magnetic (H) ...
We investigate the effect of the finite conductivity of the ground on the amplitude and waveshape of...
We present measurements of nearby vertical and horizontal electric fields from leaders and return st...
In this paper it is shown how the finitely conducting ground modifies the signature of the radiation...
The knowledge of lightning current parameters comes essentially from direct measurements obtained us...
In this paper, we show that the electric field generated by a lightning return stroke to a tall stru...
New general expressions relating lightning return stroke currents and far radiated electric and magn...
In this paper, an analysis of electric and magnetic fields radiated by lightning first and subsequen...
We discuss in this paper the influence of the presence of an elevated strike object on the peak of t...
Measurements of return stroke currents on instrumented towers reveal the existence of reflections at...
In this paper, analytical expressions relating far fields and currents associated with lightning str...
none9In this paper, analytical expressions relating far fields and currents associated with lightnin...
In this paper we present and discuss measurements of electric (vertical and radial) and magnetic fie...
In this paper, the radiated electric and magnetic fields above a perfectly conducting ground at diff...
none9We discuss in this paper the influence of the presence of an elevated strike object on the peak...
The paper is a contribution to the studies of factors that can affect electric (E) and magnetic (H) ...
We investigate the effect of the finite conductivity of the ground on the amplitude and waveshape of...
We present measurements of nearby vertical and horizontal electric fields from leaders and return st...
In this paper it is shown how the finitely conducting ground modifies the signature of the radiation...
The knowledge of lightning current parameters comes essentially from direct measurements obtained us...