論文

査読有り
2016年4月

Horizontal distributions of sprites derived from the JEM-GLIMS nadir observations

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  • M. Sato
  • M. Mihara
  • T. Adachi
  • T. Ushio
  • T. Morimoto
  • M. Kikuchi
  • H. Kikuchi
  • M. Suzuki
  • A. Yamazaki
  • Y. Takahashi
  • U. Inan
  • I. Linscott
  • R. Ishida
  • Y. Sakamoto
  • K. Yoshida
  • Y. Hobara
  • 全て表示

121
7
開始ページ
3171
終了ページ
3194
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/2015JD024311
出版者・発行元
AMER GEOPHYSICAL UNION

Global Lightning and Sprite Measurements on Japanese Experiment Module (JEM-GLIMS) started the nadir observations of lightning discharges and transient luminous events (TLEs) from the International Space Station (ISS) since November 2012. In the nadir observations, JEM-GLIMS optical instruments have to simultaneously detect incomparably intense lightning emissions and weak TLE emissions. To distinguish TLEs, especially sprite events, from lightning events, combined data analytical methods are adopted: (1) a subtraction of the wideband camera image from the narrowband camera image, (2) a calculation of the intensity ratio between different photometer channels, and (3) an estimation of the polarization and charge moment changes for the TLE-producing lightning discharges. We succeeded in identifying numbers of sprite events using the combined analytical methods, and here we report three sprite events detected by JEM-GLIMS as a case study. In the subtracted images, sprite emissions are located over the area of the sprite-producing lightning emissions. However, these sprites and sprite-producing lightning discharges did not occur at the nadir point of the ISS. For this reason, the geometry conversion of the sprite and sprite-producing lightning emissions as observed from the point just over the sprite-producing lightning discharges is performed. In the geometry-converted images, the locations of the sprite emissions are clearly displaced by 8-20km from the peak positions of the sprite-producing lightning emissions. Thus, the first quantitative spatial distributions of sprites and sprite-producing lightning discharges from the JEM-GLIMS nadir observations are revealed.

リンク情報
DOI
https://doi.org/10.1002/2015JD024311
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000375120200007&DestApp=WOS_CPL
ID情報
  • DOI : 10.1002/2015JD024311
  • ISSN : 2169-897X
  • eISSN : 2169-8996
  • Web of Science ID : WOS:000375120200007

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