Dynamic characteristics of currents lightning strikes
The work is devoted to research of parameters of lightning on the Earth of different polarity. In this work facts to define the parameters of the current of lightning in the North Caucasus were used. They were received from the stormy registrar LS 8000 of Alpine geophysical institute. The stormy registrar guarantees the receiving of information about lightnings from the whole territory of the North Caucasus. The analysis of the results of time parameters' registration of the lightnings current impulses in 2009-2010 years was done. The analysis of the database allowed to find the average values of the currents amplitude $I_{max}$, time of accumulation $\tau_{\varphi}$ and the time of recession $\tau{c}$ of the current wave in the lightnings canals of different polarities. We found the expression for the current lightnings with the help of database and received values of the lightning parameters with different polarities, using the methods of mathematical statistics.