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Radiation field wave forms produced by lightning stepped leaders

1975; American Geophysical Union; Volume: 80; Issue: 18 Linguagem: Inglês

10.1029/jc080i018p02653

2156-2202

E. Philip Krider, George J. Radda,

Electrical Fault Detection and Protection

Journal of Geophysical Research (1896-1977)Volume 80, Issue 18 p. 2653-2657 Radiation field wave forms produced by lightning stepped leaders E. Philip Krider, E. Philip KriderSearch for more papers by this authorGeorge J. Radda, George J. RaddaSearch for more papers by this author E. Philip Krider, E. Philip KriderSearch for more papers by this authorGeorge J. Radda, George J. RaddaSearch for more papers by this author First published: 20 June 1975 https://doi.org/10.1029/JC080i018p02653Citations: 61AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Broad band electric field data are presented which show stepped leader wave forms preceding records of distant lightning return strokes. The majority of leader pulses are characterized by a large initial peak with a small and slow opposite overshoot. Total pulse durations range from 15–40 μs several milliseconds before the return stroke to 2–10 μs immediately preceding the return stroke. Close to the ground the stepped leader pulses occur at regular 10- to 20-μs intervals and are almost unipolar with rise times of about 1 MS and full widths at half maximum in the range from 1 to 3 μs. The ratio of the peak of the last leader pulse to the subsequent return stroke peak is typically 0.1, which suggests a peak step current near the ground of about 10% of the return stroke peak current. References Appleton, E. V., F. W. Chapman, On the nature of atmospherics, 4, Proc. Roy. Soc. London, Ser. 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