カテゴリ: 論文誌(論文単位)グループ名: 【B】電力・エネルギー部門発行日: 2013/12/02タイトル(英語): Deducing Locations and Charge Moment Changes of Lightning Discharges by ELF Network Observations in Japan著者名: Yasuhide Hobara (Dept. of Communication Eng. and Informatics, The University of Electro-Communications), Takahiro Inoue (Mitsubishi Electric TOKKI Systems Corporation), Masashi Hayakawa (Dept. of Communication Eng. and Informatics, The University of Elect著者名(英語): Yasuhide Hobara (Dept. of Communication Eng. and Informatics, The University of Electro-Communications), Takahiro Inoue (Mitsubishi Electric TOKKI Systems Corporation), Masashi Hayakawa (Dept. of Communication Eng. and Informatics, The University of Electro-Communications), Kazuo Shiokawa (Solar-Terrestrial Environment Laboratory, Nagoya University)キーワード: ELF transient，charge moment change，red sprite，thunderstorm activity要約(英語): 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.本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.133 No.12 （2013） 特集：System Technical Performance（系統の技術性能）本誌掲載ページ: 994-1000 p原稿種別: 論文／英語電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/133/12/133_994/_article/-char/ja/
