Research on electrical properties of summer and winter lightning by using low frequency electromagnetic waves and comprehensive observations of thunderstorm activities

利用低频电磁波研究夏季和冬季闪电电特性及雷暴活动综合观测

• 批准号: 22560266
• 负责人: HOBARA Yasuhide
• 金额: $ 3万
• 依托单位: The University of Electro-Communications
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560266/
• 关键词: 電気・電磁環境; 落雷電荷量マップ; 自然現象観測・予測; 自然災害; 超高層物理学; 落雷電荷モーメント; ELFトランジェント; 雷放電; 国際宇宙ステーション; GLIMS; 落雷電荷量マツプ

Electrical properties of winter lightning in Hokuriku region around the sea of Japan and of summer lightning over Kanto region are studied by using newly developed ELF observation network to detect radiations from lightning flashes. To date spatio-temporal distributions of lightning flashes with a polarity and charge moment information have been successfully derived This is the first attempt to use multipoint measurement of the ELF frequency range for such short separation distance. Moreover, one-year statistical analysis has been carried out by using the data from LF conventional lightning network together with our ELF network. As a result, we found that lightning flashes delivering a large amount of charge are frequently occurred around the sea of Japan and over the Pacific Ocean during the wintertime.

利用新近发展的ELF观测网对日本海北陆地区冬季闪电和关东地区夏季闪电的电特性进行了研究。迄今为止，已成功地导出了具有极性和电荷矩信息的闪电时空分布。这是首次尝试在如此短的间隔距离下使用ELF频率范围的多点测量。同时，利用低频常规闪电网和我国ELF闪电网的观测资料，进行了一年的统计分析。结果，我们发现，在冬季，日本海周围和太平洋上空经常发生提供大量电荷的闪电。

项目成果

Ionospheric perturbations associated with two huge earthquakes in Japan, using principal component analysis for multiple subionospheric VLF/LF propagation paths

与日本两次大地震相关的电离层扰动，对多个亚电离层 VLF/LF 传播路径使用主成分分析

• 发表时间: 2012
• 期刊: Ann. Geophysics (Italy)
• 作者: Ono;Y.;Y. Ida;Y. Kasahara;Y. Hobara;M. Hayakawa;A. Rozhnoi;M. Solovieva;O. A. Molchanov;and K. Ohta
• 通讯作者: and K. Ohta

Subionospehric VLF perturbations of red sprites: 3D FDTD modeling and experimental results

红色精灵的亚电离层 VLF 扰动：3D FDTD 建模和实验结果

• 发表时间: 2012
• 作者: 中村遼平;芳原容英;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara
• 通讯作者: Y.Hobara

STATISTICAL ANALYSIS OF THE ULF MAGNETIC FIELD DATA DURING EARTHQUAKE SWARM

地震群期间超低频磁场数据统计分析

• 发表时间: 2011
• 作者: 中村遼平;芳原容英;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;芳原容英;芳原容英
• 通讯作者: 芳原容英

VLF/LF subionsopheric propagation for the 2011 off the pacific coast of Tohoku EQ signature

2011 年东北太平洋沿岸 EQ 特征的 VLF/LF 亚电离层传播

• 发表时间: 2011
• 作者: 中村遼平;芳原容英;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;Y.Hobara;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英;芳原容英
• 通讯作者: 芳原容英

VLF subionospheric disturbances and ELF transients associated with TLEs: observations and modeling in PROPAGATION EFFECTS OF VERY LOW FREQUENCY RADIO WAVES

与 TLE 相关的 VLF 亚电离层扰动和 ELF 瞬变：甚低频无线电波传播效应的观测和建模

• 发表时间: 2010
• 作者: Vernon Cooray;Yasuhide Hobara;芳原容英
• 通讯作者: 芳原容英