タイトル | Ionospheric perturbations observed by the low altitude satellite DEMETER and possible relation with seismicity |
著者(日) | 芳原, 容英; 中村, 遼平; 鈴木, 元気; 早川, 正士; Parrot, Michel |
著者(英) | Hobara, Yasuhide; Nakamura, Ryohei; Suzuki, M.; Hayakawa, Masashi; Parrot, Michel |
著者所属(日) | 電気通信大学大学院情報理工学研究科 : 電気通信大学地震電磁気研究ステーション; 電気通信大学大学院情報理工学研究科; 電気通信大学大学院情報理工学研究科; 電気通信大学地震電磁気研究ステーション : 電気通信大学先端ワイヤレスコミュニケーション研究センター; フランス国立環境物理化学宇宙研究所 |
著者所属(英) | Graduate School of Informatics and Engineering, The University of Electro-Communications (UEC) : Research Station on Seismo-Electromagnetics, The University of Electro-Communications (UEC); Graduate School of Informatics and Engineering, The University of Electro-Communications (UEC); Graduate School of Informatics and Engineering, The University of Electro-Communications (UEC); Research Station on Seismo-Electromagnetics, The University of Electro-Communications (UEC) : Advanced Wireless Communications Research Center, The University of Electro-Communications (UEC); Laboratoire de Physique et Chimie de l'Environment et de l'Espace |
発行日 | 2013-01 |
発行機関など | 日本大気電気学会 Society of Atmospheric electricity of Japan |
刊行物名 | Journal of Atmospheric Electricity |
巻 | 33 |
号 | 1 |
開始ページ | 21 |
終了ページ | 29 |
刊行年月日 | 2013-01 |
言語 | eng |
抄録 | The high-altitude ionospheric perturbations around the equatorial anomalies (EA) are often observed by DEMETER spacecraft on the nighttime orbits. The ionospheric perturbations are recognized as an enhancement of the electric field in the ELF frequency range in the satellite coordinate. Clear perturbations are mostly recognized on the dayside of the satellite orbit and the peak perturbation intensity tends to increase with increasing magnetic latitude based on around 1000 perturbation events observed in the year of 2005. The perturbation intensities are examined in relation with major seismic activities. As a result, most importantly higher perturbation intensity persists for the time period around the occurrence days of the land earthquakes rather than those for the sea earthquakes and without major earthquakes nearby. However, the difference of the observed perturbation intensity between above-mentioned three cases are rather small due to relatively large variability indicative of the weak correlation of seismicity with the high altitude ionospheric perturbations near EA. |
内容記述 | 形態: カラー図版あり Physical characteristics: Original contains color illustrations |
キーワード | ionospheric perturbations; satellite observation; equatorial anomaly; seismic activity |
資料種別 | Journal Article |
ISSN | 0919-2050 |
NCID | AA11610202 |
SHI-NO | AA0065501002 |
URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/19530 |