A Ground-Lightning Environment for Engineering Usage.

摘要

Data on lightning incidence are first examined. Expressions are derived relating lightning incidence to the monthly thunderstorm-day statistic,to diurnal variation of activity,and to structure height. By using these expressions the number of lightning strikes to be expected over any period of time can be estimated,on a climatological basis,for a structure of known height located anywhere in the world. The following physical parameters of lightning are then discussed;peak current,time to peak current,rate of current rise,magnitude and duration of continuing currents,total charge transfer,number of strokes,and time between.