LEMP from Lightning Discharges Observed by JLDN
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- Ishii Masaru
- The University of Tokyo
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- Saito Mikihisa
- The University of Tokyo
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- Fujii Fumiyuki
- The University of Tokyo
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- Hojo Jun-Ichi
- Lightning Research Office
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- Matsui Michihiro
- Franklin Japan Corporation
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- Itamoto Naoki
- Hokuriku Electric Power Co.
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- Shinjo Kazuo
- Hokuriku Electric Power Co.
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Abstract
JLDN (Japanese Lightning Detection Network) is a large-scale lightning location system, which covers from Hokkaido to Southwest Islands of Japan. It observes LEMP (lightning electromagnetic impulse) in the frequency ranges from VLF to LF, and estimates location and current amplitudes of lighting return strokes. The present study evaluates its ability to discriminate LEMP from return-strokes by comparing its output with the observation of a fast-antenna network constructed on Fukui Plain. It turns out that about 90% of the sources of LEMP, interpreted by JLDN as positive return strokes in the 10kA range in summer, are not cloud-to-ground strokes but in-cloud discharges. The number of termination points on ground produced by negative cloud-to-ground strokes in summer is about 1.3 to 1.4 times of the number of negative flashes observed by JLDN.
Journal
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- IEEJ Transactions on Power and Energy
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IEEJ Transactions on Power and Energy 125 (8), 765-770, 2005
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001204600941312
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- NII Article ID
- 10016615892
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- NII Book ID
- AN10136334
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- BIBCODE
- 2005IJTPE.125..765I
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- ISSN
- 13488147
- 03854213
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- NDL BIB ID
- 7440901
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed