Update Direct-Strike Lightning Environment for Stockpile-to-Target Sequence (Second Revision)

Technical Report · Tue Oct 05 00:00:00 EDT 2010

DOI:https://doi.org/10.2172/1124903· OSTI ID:1124903

Uman, Martin A. ^[1]; Rakov, V. A. ^[1]; Elisme, J. O. ^[1]; Jordan, D. M. ^[1]; Biaji, C. J. ^[1]; Hill, J. D. ^[1]

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1. Univ. of Florida, Gainesville, FL (United States)

The University of Florida has surveyed all relevant publications reporting lightning characteristics and presents here an up-to-date version of the direct-strike lightning environment specifications for nuclear weapons published in 1989 by R. J. Fisher and M. A. Uman. Further, we present functional expressions for current vs. time, current derivative vs. time, second current derivative vs. time, charge transfer vs. time, and action integral (specific energy) vs. time for positive and negative first return strokes, for negative subsequent return strokes, and for positive and negative continuing currents; and we give sets of constants for these functional expressions so that the resultant waveforms exhibit approximately the median and extreme lightning parameters presented in the updated direct strike environment. Fourier transforms of the return stroke current waveforms are presented. The results of our literature survey are included in three Appendices entitled Return Stroke Current, Continuing Current, and Positive Lightning.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 1124903
• Report Number(s): LLNL-SR-458333
• Country of Publication: United States
• Language: English

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