Abstract:
Two direction finding stations placed in close proximity are used to monitor lightning ground
flashes occurred in several thunderstorms during the monsoon season (April to July 1998).
From the data collected by both stations, about 90% of the coincidence signal recordings
selected on the criteria based on the time of occurrence and the multiplicity are found to be
in good agreement with respect to amplitude and direction. It is shown that the angular
accuracy of 0.50 and a signal resolution of 1.5% can be achieved only after a careful study
since the data are highly influenced by site errors. Percentage of positive ground flashes
was found to be in the range of 2% - 20%.
