多地点LF帯センサによる雷放電リーダの三次元標定とレーダ反射因子との比較

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: 2014/04/01

タイトル(英語): Lightning Observation in 3D using a Multi LF Sensor Network and Comparison with Radar Reflectivity

著者名: 吉田　智（気象研究所），Wu　Ting（大阪大学大学院工学研究科），牛尾　知雄（大阪大学大学院工学研究科），高柳　裕次（（株）日立製作所）

著者名(英語): Satoru Yoshida (Meteorological Research Institute), Ting Wu (Graduate School of Engineering, Osaka University), Tomoo Ushio (Graduate School of Engineering, Osaka University), Yuji Takayanagi (Hitachi Ltd.)

キーワード: 雷放電，大気電気学，リモートセンシング　　lightning discharges，atmospheric electricity，remote sensing

要約(英語): A 3D lightning mapper consisting of multi LF sensors has been developed to monitor the thunderstorms and charge structure of thunderstorms. We have been conducting observation campaign with the 3D lightning mapper in Kansai, Japan, from October 2012. In this paper, we show 3D source locations of cloud-to-cloud (CC) and cloud-to-ground (CG) flashes and compare with radar reflectivity estimated by a phased array radar with quite high temporal and spatial resolution. Most LF sources are located in high radar reflectivity regions, indicating that the 3D lightning mapper can monitor thunderstorms. It is found that a lightning flash with heavily branches is clearly imaged. With bi-directional leader theory that negative and positive ends of a lightning leader develop simultaneously, we estimate positive and negative charge regions in a thundercloud from LF source locations. Radar reflectivity estimated by the phased array radar support the charge structure estimated by LF source locations.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.4 （2014） 特集：平成25年基礎・材料・共通部門大会

本誌掲載ページ: 188-196 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/134/4/134_188/_article/-char/ja/