Upward Lightning Observed by LF Broadband Interferometer

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2013/03/01

タイトル(英語): Upward Lightning Observed by LF Broadband Interferometer

著者名: Yuji Takayanagi (Graduate School of Engineering, Osaka University), Manabu Akita (New Mexico Institute of Mining & Technology), Yoshitaka Nakamura (Kobe City College of Technology), Satoru Yoshida (Graduate School of Engineering, Osaka University), Takesh

著者名(英語): Yuji Takayanagi (Graduate School of Engineering, Osaka University), Manabu Akita (New Mexico Institute of Mining & Technology), Yoshitaka Nakamura (Kobe City College of Technology), Satoru Yoshida (Graduate School of Engineering, Osaka University), Takeshi Morimoto (Faculty of Science and Engineering, Kinki University), Tomoo Ushio (Graduate School of Engineering, Osaka University), Zen-ichiro Kawasaki (Graduate School of Engineering, Osaka University), Daohong Wang (Faculty of Engineering, Gifu University), Nobuyuki Takagi (Faculty of Engineering, Gifu University), Hitoshi Sakurano (Kaela R&D Company Limited), Yoshiyuki Kubouchi (Hokkei Industries Company Limited)

キーワード: lightning discharges in winter，upward lightning，broadband interferometry，EM source location

要約(英語): We have been designing and developing a 3-D lightning location system based on the broadband digital interferometry technique in LF bands. The LF broadband digital interferometer (LF DITF) consists of four or more LF receivers which detect electromagnetic (EM) waves in a wide frequency range from 400 Hz to 1 MHz associated with lightning discharges. Since each receiver detects EM waves in LF, the LF DITF is able to locate lightning discharges in several hundred kilometers. During the winter season in 2010-2011, a simultaneous observation of a LF DITF, a VHF DITF, and Rogowski coils was conducted in Hokuriku, Japan, which borders the Sea of Japan, for evaluation of the LF DITF for locating upward leaders and further understanding of winter lightning in Japan. We show the time series variation of the cases of a bipolar lightning flash and of an upward negative flash.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.133 No.3 （2013） 特集：2011 International Symposium on Electrical Insulating Materials

本誌掲載ページ: 132-141 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/133/3/133_132/_article/-char/ja/