GEOMETRICAL AND PHYSICAL PARAMETERS AFFECTING DISTANT ELECTRIC FIELDS RADIATED BY LIGHTNING RETURN STROKES.
نویسندگان
چکیده
منابع مشابه
Geometrical and Physical Parameters Affecting Distant Electric Fields Radiated by Lightning Return Strokes
In this paper detailed numerical results are presented for the estimation of the electric field generated by the first return stroke, in order to reproduce the main characteristics of field waveforms measured at distances beyond 50 km. The effect of parameters such as the lightning channel geometry, distance from the source, return-stroke current speed, its attenuation along the channel is disc...
متن کاملExpressions for far electric fields produced at an arbitrary altitude by lightning return strokes
[1] Electromagnetic fields produced at high altitudes by return strokes in cloud-to-ground lightning are needed in studies of transient luminous events in the mesosphere. Such calculations require the use of a lightning return stroke model. Two of the widely used return stroke models are (1) the modified transmission line model with exponential decay (MTLE) of current with height and (2) the mo...
متن کاملLightning Electric and Magnetic Fields
Characteristics of measured electric and magnetic fields generated by various lightning processes are reviewed. Ground flashes of both polarities and cloud flashes are considered. Examples of different types of field waveforms are given.
متن کاملThe Deep Physics Hidden within the Field Expressions of the Radiation Fields of Lightning Return Strokes
Based on the electromagnetic fields generated by a current pulse propagating from one point in space to another, a scenario that is frequently used to simulate return strokes in lightning flashes, it is shown that there is a deep physical connection between the electromagnetic energy dissipated by the system, the time over which this energy is dissipated and the charge associated with the curre...
متن کاملOn Practical Implementation of Electromagnetic Models of Lightning Return-Strokes
In electromagnetic models, the return-stroke channel is represented as an antenna excited at its base by either a voltage or a current source. To adjust the speed of the current pulse propagating in the channel to available optical observations, different representations for the return-stroke channel have been proposed in the literature using different techniques to artificially reduce the prop...
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ژورنال
عنوان ژورنال: Progress In Electromagnetics Research B
سال: 2014
ISSN: 1937-6472
DOI: 10.2528/pierb14012009