Hiroshi KIKUCHI (菊池博史)

0120200_情報・ネットワーク工学専攻, 0120000_大学院情報理工学研究科, The University of Electro-Communications

ジャーナル論文 - rm_published_papers: Scientific Journal 査読済み

Temporal Dependencies Between Total Lightning and Rainfall in Multicellular Systems: A Predictive Approach for Torrential Rain During Summer Thunderstorms in Japan

by Hiroshi KIKUCHI

公開済 02/2026

Radio Science, 61, e2025RS008380

会議発表プレゼンテーション

Observations of summer thunderstorms with X-band multi-parameter phased array weather radar and LF/MF band lightning location system

by Hiroshi KIKUCHI

公開済 23/07/2025

International Symposium on Lightning and Wind Turbines, 23/07/2025–23/07/2025

ジャーナル論文 - rm_published_papers: Scientific Journal 査読済み

Downward terrestrial gamma-ray flash associated with collision of lightning leaders

by Hiroshi KIKUCHI

公開済 23/05/2025

Science Advances, 11, 21

Lightning discharges can produce transient gamma-ray emissions called terrestrial gamma-ray flashes (TGFs), which originates from electrons accelerated to relativistic energies in strong electric fields. However, it is not yet understood how lightning produces an enormous number of relativistic electrons in dense atmospheres. We present that, thanks to a ground-based observation with optical, radio frequency and high-energy measurements focused on television transmission towers in Kanazawa, Japan, a TGF and a cloud-to-ground discharge of −56 kA occurred when a downward negative leader was colliding with an upward positive leader from the tower. Because the cloud-to-ground current followed the TGF by 30 μs, the TGF started when two leaders approached each other. Our results indicate that an immense number of electrons were produced and accelerated to relativistic energies in a strong and compact electric-field region between the two leaders.

ジャーナル論文 - rm_misc: Summary National Conference

２周波同時観測による地震に関連する電磁気異常の調査

by Hiroshi KIKUCHI

公開済 01/2025

第103回日本大気電気学会, P1-31