Study of lightning channel through 3D reconstruction images: a case study

摘要: Forty-three lightning flashes were observed, during the summers from 2010 to 2013, in urban area of Sao Bernardo do Campo, Paulo. The 10 thunderstorms monitoring simultaneously by a stereo system, E-field measurement and BrasilDat network. Several images tortuous observed identify real tortuosity channel. positive cloud-to-ground presented longer horizontal transversal displacements than negative flashes. Cases stepped leader its respective return stroke on vision identifying main channel used stroke. Long channels looping events. Most electromagnetic models studies propagation not consider tortuosity. So, application can come up with details as well clarify