Study and characterization of the transient electromagnetic field radiated by lightning

摘要

Lightning fascinates and frightens us. The considerable damage it causes to property and its unfortunate victims plainly demonstrate that the imaginary is based on a phenomenon that is very real and can be fairly well explained, but cannot be combated. Lightning is one of those natural events which catches people's imagination with its obvious violence and the destructive power attributed to it. Only modest attempts can be made to control its effects and the consequences. The aim of the present paper is to dissect, to better understand the phenomenon of lightning and thus make more tools to help for designing a more effective means of protection against lightning, when we discuss the properties of transient electromagnetic fields of lightning (TEMFL) through the characterization of components (Static Induction and Radiant) that form the three vectors of electromagnetic fields (electric vertical, electric horizontal and magnetic Azimuthal). The development of simulation code under Matlab "Sim-Lightning" helped us to reconstitute the allure of the spatio-temporal variation (TEMFL). By comparison of the results obtained by our code Sim-Lightning with others in the literature, experimental or simulated were given a very satisfactory approximation.