The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This work presents preliminary observations of the first lightning flash striking an instrumented lightning rod on the top of a common building in Brazil. The measurements include direct electric current in the lightning rod, high-speed recordings using different types of cameras and data from two lightning location systems (LLS) that operate in Brazil: RINDAT and BrasilDAT. The striking flash contained...
The processes that give origin to the current pulses during the initial continuous current (ICC), M-components and return strokes in upward flashes are subject of recent studies and require further understanding. Apparently, the common aspect behind these processes relies on the physics that govern the recoil leaders (RL), which is presently not well understood. This study uses high-speed cameras...
BrasilDAT network is an EarthNetworks Total Lightning System (ENTLS) that detects both intra-cloud and cloud-to-ground discharges. Multiple time-of-arrival (TOA) sensors send to central processor the whole waveform of every event detected. The EarthNetworks Lightning Sensor (ENLS) operates in a wide range (from 1Hz to 12MHz) and was designed to reduce system noise and to broaden the frequency range...
There has been some discussion concerning the nature of luminosity pulses observed during the continuing currents of positive cloud-to-ground flashes. It still undefined whether or not these pulses can be considered M components when compared to similar events observed in negative flashes. In the present paper we expand this discussion by analyzing electric field waveforms associated with channel...
Although positive lightning flashes to ground are not as frequent as negative flashes, their large amplitudes and destructive characteristics make understanding their parameters an important issue. This study summarizes the characteristics of 103 positive cloud-to-ground (+CG) flashes that have been recorded using high-speed video cameras (up to 8000 frames per second) in three countries together...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.