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- T. C. Marshall
- Department of Physics and Astronomy University of Mississippi University Mississippi USA
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- M. Stolzenburg
- Department of Physics and Astronomy University of Mississippi University Mississippi USA
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- C. R. Maggio
- Department of Physics and Astronomy University of Mississippi University Mississippi USA
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- L. M. Coleman
- Department of Physics and Astronomy University of Mississippi University Mississippi USA
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- P. R. Krehbiel
- Langmuir Laboratory for Atmospheric Research New Mexico Institute of Mining and Technology Socorro New Mexico USA
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- T. Hamlin
- Langmuir Laboratory for Atmospheric Research New Mexico Institute of Mining and Technology Socorro New Mexico USA
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- R. J. Thomas
- Langmuir Laboratory for Atmospheric Research New Mexico Institute of Mining and Technology Socorro New Mexico USA
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- W. Rison
- Langmuir Laboratory for Atmospheric Research New Mexico Institute of Mining and Technology Socorro New Mexico USA
書誌事項
- 公開日
- 2005-02
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2004gl021802
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>In situ electric field (E) measurements and inferred lightning initiation locations of three cloud‐to‐ground flashes are used to identify a thunderstorm region in which the preflash E exceeded the threshold for runaway breakdown. The maximum measured E in the region was 186 kV m<jats:sup>−1</jats:sup> at 5.77 km altitude, which for runaway electrons is equivalent to 370 kV m<jats:sup>−1</jats:sup> at sea level; this E value is ∼130% of the estimated threshold for an avalanche of runaway electrons. In addition, the volume where E exceeded the runaway threshold was estimated to be 1–4 km<jats:sup>3</jats:sup>, with a vertical depth of about 1000 m. At least within part of this volume the characteristic scale height for exponential growth of runaway electrons was 100 m or less. Thus for these three flashes the electric field conditions necessary for runaway breakdown existed, and runaway breakdown could have initiated the flashes.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 32 (3), 2005-02
American Geophysical Union (AGU)
