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Study of Dispersion of Lightning Whistlers Observed by Akebono Satellite in the Earth's Plasmasphere
https://doi.org/10.24517/00028570
https://doi.org/10.24517/000285709fadfc4a-e770-4dc8-9a63-deeb19f1a428
名前 / ファイル | ライセンス | アクション |
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IS-PR-KASAHARA-Y-3472.pdf (1.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-05 | |||||
タイトル | ||||||
タイトル | Study of Dispersion of Lightning Whistlers Observed by Akebono Satellite in the Earth's Plasmasphere | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
ID登録 | ||||||
ID登録 | 10.24517/00028570 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Bayupati, I Putu Agung
× Bayupati, I Putu Agung× Kasahara, Yoshiya× Goto, Yoshitaka |
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著者別表示 |
笠原, 禎也
× 笠原, 禎也× 後藤, 由貴 |
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書誌情報 |
IEICE Transactions on Communications 巻 E95.B, 号 11, p. 3472-3479, 発行日 2012-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0916-8516 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10826261 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1587/transcom.E95.B.3472 | |||||
出版者 | ||||||
出版者 | 電子情報通信学会 IEICE | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | When the Akebono (EXOS-D) satellite passed through the plasmasphere, a series of lightning whistlers was observed by its analog wideband receiver (WBA). Recently, we developed an intelligent algorithm to detect lightning whistlers from WBA data. In this study, we analyzed two typical events representing the clear dispersion characteristics of lightning whistlers along the trajectory of Akebono. The event on March 20, 1991 was observed at latitudes ranging from 47.83° (47,83°N) to -11.09° (11.09°S) and altitudes between ∼2232 and ∼7537km. The other event on July 12, 1989 was observed at latitudes from 34.94° (34.94°N) and -41.89° (41.89°S) and altitudes ∼1420-∼7911km. These events show systematic trends; hence, we can easily determine whether the wave packets of lightning whistlers originated from lightning strikes in the northern or the southern hemispheres. Finally, we approximated the path lengths of these lightning whistlers from the source to the observation points along the Akebono trajectory. In the calculations, we assumed the dipole model as a geomagnetic field and two types of simple electron density profiles in which the electron density is inversely proportional to the cube of the geocentric distance. By scrutinizing the dipole model we propose some models of dispersion characteristic that proportional to the electron density. It was demonstrated that the dispersion D theoretically agrees with observed dispersion trend. While our current estimation is simple, it shows that the difference between our estimation and observation data is mainly due to the electron density profile. Furthermore, the dispersion analysis of lightning whistlers is a useful technique for reconstructing the electron density profile in the Earth's plasmasphere. | |||||
権利 | ||||||
権利情報 | Copyright © 2012 The Institute of Electronics, Information and Communication Engineers | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.jstage.jst.go.jp/browse/transcom | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.ieice.org/jpn/index.html |