| タイトル | Identification of full-substorm onset from ground-magnetometer data by singular value transformation |
| DOI | info:doi/10.5109/19197 |
| 本文（外部サイト） | https://catalog.lib.kyushu-u.ac.jp/opac_download_md/19197/p063.pdf |
| 参考URL | http://hdl.handle.net/2324/19197 |
| 著者（英） | Tokunaga, Terumasa; Yumoto, Kiyohumi; Uozumi, Teiji; CPMN Group |
| 発行日 | 2011-03-17 |
| 発行機関など | Faculty of Science, Kyushu University |
| 刊行物名 | Memoirs of the Faculty of Science, Kyushu University. Series D, Earth and planetary sciences |
| 巻 | 32 |
| 号 | 3 |
| 開始ページ | 63 |
| 終了ページ | 73 |
| 刊行年月日 | 2011-03-10 |
| 言語 | eng |
| 内容記述 | Pi 2 magnetic pulsations observed on the ground are a good indicator of the auroral breakup. However, they have not only corresponding full-substorm onsets but also most pseudobreakups. Another well-known substorm related phenomenon observed on the ground is positive bays. In order to identify full-substorm onsets from ground-magnetometer data, we developed a new algorithm based on "Singular Spectrum Analysis(SSA)". The algorithm enables us to screen Pi 2 pulsations accompanied by the magnetic positive bay. We applied proposed algorithm to ground-magnetometer data and compared to the obtained results with Polar/UVI data. As a result, we succeeded in identifying 62% of the full-substorm onsets from ground-magnetometer data obtained in the nighttime sector between 21 and 03LT. |
| キーワード | auroral substorm; Pi 2 pulsation; positive bay; Singular Value Transformation |
| 資料種別 | Departmental Bulletin Paper |
| 著者版フラグ | publisher |
| ISSN | 0916-7390 |
| NCID | AA10816494 |
