Deducing Locations and Charge Moment Changes of Lightning Discharges by ELF Network Observations in Japan
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- Hobara Yasuhide
- Dept. of Communication Eng. and Informatics, The University of Electro-Communications
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- Inoue Takahiro
- Mitsubishi Electric TOKKI Systems Corporation
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- Hayakawa Masashi
- Dept. of Communication Eng. and Informatics, The University of Electro-Communications
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- Shiokawa Kazuo
- Solar-Terrestrial Environment Laboratory, Nagoya University
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The electromagnetic radiations from lightning discharges have been intensively studied for a long time in different frequency ranges. Recent observations of electromagnetic radiations from lightning in the ELF (extremely low frequency) frequency range so-called ELF transients are recognized as a powerful tool to obtain one of the most important properties of lightning discharges; the charge moment changes (Qds). In this paper we demonstrate the spatio-temporal distributions of lightning discharges together with their charge moment change (CMC) around Japan by using our newly developed domestic ELF observation network. This is the first time to obtain such type of distribution by using only ELF observations in the spatial scale of Japan (a few thousands km). We found that the obtained lightning source distributions both over the Pacific Ocean and the Sea of Japan are originated from the thunderstorm active regions confirmed by other measurements such as WWLLN. Statistical properties of the charge moment changes indicate that both number and CMC of positive CGs are superior to those of negative CGs. Moreover considerably large CMC with both polarities are identified for the CGs over the Pacific Ocean as well as those with positive polarity over the Sea of Japan.
収録刊行物
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- 電気学会論文誌B(電力・エネルギー部門誌)
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電気学会論文誌B(電力・エネルギー部門誌) 133 (12), 994-1000, 2013
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204603424128
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- NII論文ID
- 130003382895
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- NII書誌ID
- AN10136334
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- ISSN
- 13488147
- 03854213
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- NDL書誌ID
- 025091538
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可