Title :
Two-Dimensional Observations of a Downward Cloud to Ground Lightning Discharge
Author_Institution :
Sch. of Electr. Eng. & Informatics, Bandung Inst. of Technol.
Abstract :
This paper discusses the detailed phenomenon of a downward cloud to ground lightning discharge. The VHF broadband interferometry system has been employed to obtain a two-dimensional image of this cloud to ground lightning discharge progressions. From the observation results, the cloud to ground lightning shows a series of strokes and it is typical for a cloud to ground flash. Several discharge events are observed during this lightning. These include initial and subsequent leaders, dart leader, and J- or K-processes. Period of this lightning flash is in the range of hundred milliseconds. The strokes of this flash are of normal polarity, i.e. they lower negative charge to ground
Keywords :
atmospheric techniques; clouds; electric charge; lightning; radiowave interferometry; 2D image; 2D observation; J-process; K-process; VHF broadband interferometry system; dart leader; discharge events; downward cloud; ground lightning discharge progression; lightning flash; negative charge; Broadband antennas; Character generation; Clouds; Electric breakdown; Global Positioning System; Informatics; Lightning; Optical interferometry; Sensor systems; Signal processing;
Conference_Titel :
Properties and applications of Dielectric Materials, 2006. 8th International Conference on
Conference_Location :
Bali
Print_ISBN :
1-4244-0189-5
Electronic_ISBN :
1-4244-0190-9
DOI :
10.1109/ICPADM.2006.284322
