Upward Lightning Observed by LF Broadband Interferometer
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概要
- 論文の詳細を見る
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.
著者
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Ushio Tomoo
Division Of Electrical Electric And Information Engineering Graduate School Of Engineering Osaka Uni
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Kawasaki Zen-ichiro
Division Of Electrical Electric And Information Engineering Graduate School Of Engineering Osaka Uni
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Wang Daohong
Department Of Electrical And Electronic Engineering Faculty Of Engineering Gifu University
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Morimoto Takeshi
Department Of Applied Visual Science Graduate School Of Medicine
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Yoshida Satoru
Division Of Cardiology Department Of Internal Medicine
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Nakamura Yoshitaka
Department Of Abdominal And General Sugery Tenri Hospital
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Takagi Nobuyuki
Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine
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Takagi Nobuyuki
Department of Electrical and Electronic Engineering, Faculty of Engineering, Gifu University
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Takayanagi Yuji
Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University
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Akita Manabu
Department of Physics, New Mexico Institute of Mining & Technology
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Sakurano Hitoshi
Kaela R&D Company Limited
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Kubouchi Yoshiyuki
Hokkei Industries Company Limited
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Sakurano Hitoshi
Kaela R&D Company Limited
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Yoshida Satoru
Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University
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Ushio Tomoo
Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University
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Nakamura Yoshitaka
Department of Electrical Engineering, Kobe City College of Technology
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