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2013 Fiscal Year Final Research Report

Conjugacy of auroras and their relationship to solar activity

Research Project

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Project/Area Number 21403007
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Space and upper atmospheric physics
Research InstitutionNational Institute of Polar Research

Principal Investigator

SATO NATSUO  国立極地研究所, 名誉教授 (50132709)

Co-Investigator(Kenkyū-buntansha) YAMAGISHI Hisao  国立極地研究所, 研究教育系, 教授 (20132714)
KADOKURA Akira  国立極地研究所, 研究教育系, 教授 (70185883)
OGAWA Yasunobu  国立極地研究所, 研究教育系, 准教授 (00362210)
YUKIMATU Akira  国立極地研究所, 研究教育系, 准教授 (70260007)
ONO Takayuki  東北大学, 大学院・理学研究科, 教授
HOSOKAWA Keisuke  電気通信大学, 電気通信学部, 准教授 (80361830)
TAGUCHI Makoto  立教大学, 理学部, 教授 (70236404)
OKANO Syoichi  東北大学, 大学院・理学研究科, 教授 (10004483)
Project Period (FY) 2009-04-01 – 2014-03-31
Keywords宇宙科学 / 磁気圏・電離圏 / 超高層物理学 / オーロラ / 極域科学 / 南極昭和基地 / アイスランド / 地磁気共役点
Research Abstract

Syowa Station in Antarctica and stations in Iceland form an ideal set of observatories to study geomagnetically conjugate auroras in the auroral zone. A campaign of conjugate auroral observations using all-sky TV cameras has been carried out during the equinox periods. We examined several types of auroras, e.g., beads aurora, auroral breakup, spirals, and pulsating aurora, checking for similarity and dissimilarity in terms of shapes, movements, and luminosity variations at both observatories. We assumed their generation region and mechanisms. We were also able to trace the temporal movements and displacement of the auroras in the Northern and Southern Hemispheres with a high spatial-temporal resolution. We discussed their conjugate characteristics with reference to solar wind-magnetosphere and magnetosphere-ionosphere coupling processes.

  • Research Products

    (30 results)

All 2014 2013 2012 2011 2010 2009

All Journal Article (15 results) (of which Peer Reviewed: 15 results) Presentation (15 results) (of which Invited: 6 results)

  • [Journal Article] Interrelationship between preonset auroral and magnetic signatures at a geomagnetically conjugate Iceland-Syowa pair2014

    • Author(s)
      Motoba, M., S. Ohtani, A. Kadokura and J. Gjerloev
    • Journal Title

      J. Geophys. Res

      Volume: 119 Pages: 761-769

    • DOI

      10.1002/2013JA019512

    • Peer Reviewed
  • [Journal Article] Substorm onset process : Ignition of auroral acceleration and related substorm phases2014

    • Author(s)
      Morioka, A., Y. Miyoshi, Y. Kasaba, N. Sato, A. Kadokura 他3名
    • Journal Title

      J. Geophys. Res

      Volume: 119

    • DOI

      10.1002/2013JA019442

    • Peer Reviewed
  • [Journal Article] Large flow shears around auroral beads at substorm onset2013

    • Author(s)
      Hosokawa, K., S. E. Milan, M. Lester, A. Kadokura, N. Sato, G. Bjornsso
    • Journal Title

      Geophys. Res., Lett

      Volume: vol.40 Pages: 4987-4991

    • DOI

      10.1002/grl.50958

    • Peer Reviewed
  • [Journal Article] Simultaneous ground-satellite observations of meso-scale auroral arc undulations2013

    • Author(s)
      Motoba, T., K. Hosokawa, Y. Ogawa, N. Sato, A. Kadokura, S. E. Milan, and M. Lester
    • Journal Title

      J. Geophys. Res

      Volume: 117 Pages: A06213

    • DOI

      10.1029/2011JA017291

    • Peer Reviewed
  • [Journal Article] First observations of 4fce auroral roar emissions2012

    • Author(s)
      Sato, Y., T. Ono, N. Sato, Y. Ogawa
    • Journal Title

      Geophys. Res., Lett

      Volume: 39

    • DOI

      10.1029/2012GL051205

    • Peer Reviewed
  • [Journal Article] Magnetic conjugacy of northern and southern auroral beads2012

    • Author(s)
      Motoba, T., A. Kadokura, K. Hosokawa and N. Sato
    • Journal Title

      Geophys. Res., Lett

      Volume: VOL. 39 Pages: L08108

    • DOI

      10.1029/2012GL051599

    • Peer Reviewed
  • [Journal Article] Ground-based aurora conjugacy and dynamic tracing of geomagnetic conjugate points2012

    • Author(s)
      Sato, N., A. Kadokura, T. Motoba, K. Hosokawa, G. Bjornsson and T. Saemundsson
    • Journal Title

      Geophysical Monograph Series

      Volume: 197, AGU Pages: 91-98

    • DOI

      10.1029/2011GM001154

    • Peer Reviewed
  • [Journal Article] Displacement of conjugate point during a substorm in a global MHD simulation2011

    • Author(s)
      Saita, S., A. Kadokura, N. Sato 他9名
    • Journal Title

      J. Geophys. Res

      Volume: 116 Pages: A06213

    • DOI

      10.1029/2010JA016155

    • Peer Reviewed
  • [Journal Article] In-situ evidence for IMF-induced tail twisting associated with relative displacement of conjugate auroral features2011

    • Author(s)
      Motoba, T., K. Hosokawa, Y. Ogawa, N. Sato, A. Kadokura, S. C. Buchert and H. Rème
    • Journal Title

      J. Geophys. Res

      Pages: A04209

    • DOI

      10.1029/2010JA016206

    • Peer Reviewed
  • [Journal Article] On the simultaneity of substorm onset between two hemispheres2011

    • Author(s)
      Morioka, A., Y. Miyoshi, F. Tsuchiya, M. Misawa, Y. Kasaba, T. Asozu, S. Okano, A. Kadokura, N. Sato, 他7 名
    • Journal Title

      J. Geophys. Res

      Volume: 116 Pages: A04211

    • DOI

      10.1029/2010JA016174

    • Peer Reviewed
  • [Journal Article] MF/HF auroral radio emissions emanating from the topside ionosphere2010

    • Author(s)
      Sato, Y., T. Ono, N. Sato and R. Fujii
    • Journal Title

      Geophys. Res. Lett

      Volume: 37 Pages: L14102

    • DOI

      10.1029/2010GL043731

    • Peer Reviewed
  • [Journal Article] Plasma irregularities adjacent to auroral patches in the post-midnight sector2010

    • Author(s)
      Hosokawa, T. Motoba, A. S. Yukimatu, S. E. Milan, M. Lester, A. Kadokura, N. Sato, G. Bjornsson
    • Journal Title

      J. Geophys. Res

      Volume: 115 Pages: A09303

    • DOI

      10.1029/2010JA015319

    • Peer Reviewed
  • [Journal Article] Varying IMF By effects on interhemispheric conjugate auroral features during weak substorm2010

    • Author(s)
      Motoba, T., K. Hosokawa, N. Sato, Kadokura and G. Bjornsson
    • Journal Title

      J. Geophys. Res

      Volume: 115 Pages: A09210

    • DOI

      10.1029/2010JA015369

    • Peer Reviewed
  • [Journal Article] Modulation of ionospheric conductance and electric field associated with pulsating aurora2010

    • Author(s)
      Hosokawa, K., Y. Ogawa, A. Kadokura, H. Miyaoka and N. Sato
    • Journal Title

      J. Geophys. Res

      Volume: 115 Pages: A03201

    • DOI

      10.1029/2009JA014683

    • Peer Reviewed
  • [Journal Article] Spatial and temporal conjugacy of meso-scale discrete aurora2009

    • Author(s)
      Sato, N. and A. Kadokura
    • Journal Title

      Proc. Future Perspectives of Space Plasma and Particle Instrumentation and International Collaborations, AIP (American Institute of Physics)

      Pages: 201-206

    • Peer Reviewed
  • [Presentation] 真夜中から朝側の磁気圏で観測された単色Pc2-3脈動2013

    • Author(s)
      佐藤夏雄, 門倉昭, 田中良昌, 櫻井亨
    • Organizer
      第4回極域科学シンポジウム
    • Place of Presentation
      極地研
    • Year and Date
      20131112-15
  • [Presentation] 脈動オーロラの準周期的変調に及ぼす低温電子フラックスと電場の準周期的変動の寄与2013

    • Author(s)
      佐藤夏雄, 門倉昭, 田中良昌
    • Organizer
      地球電磁気・地球惑星圏学会第134回総会・講演会
    • Place of Presentation
      高知大学
    • Year and Date
      20131102-05
  • [Presentation] Driver of quasi-periodic modulation of pulsating aurora : Role of cold electron flux and electric field2013

    • Author(s)
      Natsuo Sato, Akira Kadokura, Yoshimasa Tanaka and Takanori Nishiyama
    • Organizer
      AGU 2013 Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2013-12-10
  • [Presentation] Japan-China collaboration on aurora observation at Chinese Zhongshan Station in Antarctica2013

    • Author(s)
      Sato, N, H. Yang, H. Hu, Z. -J. Hu, L. Ruiyuan, A. Kadokura, H. Yamagishi, A. S. Yukimatu, H. Miyaoka
    • Organizer
      NSFC-CAS-JSPS International Workshop
    • Place of Presentation
      広州Sun-Yat Sen Univ., China
    • Year and Date
      2013-12-06
  • [Presentation] Pulsating aurora : Role of cold electrons and electric field in the magnetosphere2013

    • Author(s)
      Natsuo Sato, A. Kadokura, Y. Tanaka and T. Nishiyama
    • Organizer
      CAWSESS II International Symposium
    • Place of Presentation
      Nagoya University
    • Year and Date
      2013-11-23
  • [Presentation] Particle and field at the onset of pulsating aurora in the magnetosphere2013

    • Author(s)
      Natsuo Sato, Akira Kadokura, Yoshimasa Tanaka
    • Organizer
      International Living With a Star Workshop 2013 (ILSW-2013)
    • Place of Presentation
      Irkutsk, Russia
    • Year and Date
      2013-06-26
  • [Presentation] 脈動オーロラ発生時の磁気圏赤道域付近の粒子・波動・電磁場2013

    • Author(s)
      佐藤夏雄, 門倉昭, 田中良昌, 細川敬介, 元場哲郎
    • Organizer
      日本地球惑星科学連合 (JpGU) 2013年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2013-05-20
  • [Presentation] 脈動オーロラのTHEMIS衛星-地上同時観測2012

    • Author(s)
      佐藤夏雄, 門倉 昭, 田中良昌
    • Organizer
      SJEPSS秋学会
    • Place of Presentation
      札幌
    • Year and Date
      2012-10-23
  • [Presentation] Dynamic tracing geomagnetic conjugate points using synchronous auroras2011

    • Author(s)
      Sato, N
    • Organizer
      AGU Chapman Conference
    • Place of Presentation
      Fairbanks, Alaska
    • Year and Date
      2011-03-03
    • Invited
  • [Presentation] Spatial and temporal tracing of real geomagnetic conjugate point observed by Syowa-Iceland conjugate-pair auroras2010

    • Author(s)
      Sato, N., T. Motoba, A. Kadokura, K. Hosokawa, G. Bjornsson, and T. Saemundsson
    • Organizer
      SCAR Open Science Conference
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      2010-08-04
    • Invited
  • [Presentation] Spatial and temporal tracing of real geomagnetic conjugate point observed by Syowa-Iceland conjugate-pair auroras2010

    • Author(s)
      Sato, N., T. Motoba, A. Kadokura, K. Hosokawa, G. Bjornsson, and T. Saemundsson
    • Organizer
      SCAR Open Science Conference
    • Place of Presentation
      Buenos Aires, Argentina
    • Year and Date
      2010-08-04
    • Invited
  • [Presentation] Interhemispheric Auroral Features Observed at Syowa-Iceland Conjugate-pair2010

    • Author(s)
      Sato, N.
    • Organizer
      AGU Western Pacific Geophysics Meeting
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      2010-06-23
    • Invited
  • [Presentation] Gunnlaugur Bjornsson, Thorsteinn Saemundsson, Interhemispheric Conjugacy of Westward Traveling Surge Aurora2010

    • Author(s)
      Sato, N., H. Doi, A. Kadokura
    • Organizer
      IPY Oslo Science Conference
    • Place of Presentation
      Oslo, Norway
    • Year and Date
      2010-06-09
  • [Presentation] Conjugate aurora2009

    • Author(s)
      Sato, N.
    • Organizer
      International Conference of Space Science and Communication (IconSpace)
    • Place of Presentation
      ポートデクソン, マレーシア
    • Year and Date
      2009-10-20
    • Invited
  • [Presentation] ICESTAR activity in Japan during IPY2007-20082009

    • Author(s)
      Sato, N.
    • Organizer
      The 4th Malaysian International Seminar on Antarctica (MISA4)
    • Place of Presentation
      クアラルンプール, マレーシア
    • Year and Date
      2009-04-03
    • Invited

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Published: 2015-06-25  

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