Study on development and decay of inner magnetospheric disturbances by using ground and satellite multipoint observations

2012 Fiscal Year Final Research Report

• Project/Area Number: 22740322
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Space and upper atmospheric physics
• Research Institution: Kyoto University
• Principal Investigator: NOSE Masahito 京都大学, 大学院・理学研究科, 助教 (90333559)
• Project Period (FY): 2010 – 2012
• Keywords: 地球惑星磁気圏 / 磁気嵐 / 内部起因磁場 / サブストーム / リングカレント / 高エネルギー酸素イオン / 粒子加速 / 酸素イオントーラス

Research Abstract

The field variations during geomagnetic storms are produced by both the magnetospheric currents such as the ring current and the induced currents inside the Earth’s interior. Previous studies have reported that the magnetic field variations due to the induced currents are about 25% of the Dst index; but we found that the Earth-induced current contribution varies between 20% and 55%, and depends on the rate of change of the Dst index. With regard to ring current development, we suggest that the non-adiabatic acceleration of preexisting cold ions by magnetic fluctuations associated with dipolarization plays a more important role than the energetic particle injection from the plasma sheet into the inner magnetosphere.

Research Products

• [Journal Article] Revisiting the role of magnetic field fluctuations in nonadiabatic acceleration of ions during dipolarization (2012)
  • Author(s): Nose, M., Y. Ono, S. P. Christon, and A. T. Y. Lui
  • Journal Title: J. Geophys. Res. Volume: 117 Pages: A02207
  • DOI: doi:10.1029/2012JA017518
  • Peer Reviewed
• [Journal Article] A new substorm index derived from high-resolution geomagnetic field data at low latitude (2012)
  • Author(s): Nose, M., T. Iyemori, L. Wang, A. Hitchman, J. Matzka, M. Feller, S. Egdorf, S. Gilder, N. Kumasaka, K. Koga, H. Matsumoto, H. Koshiishi, G. Cifuentes-Nava, J. J. Curto, A. Segarra, and C. Celik, Wp index
  • Journal Title: Space Weather Volume: 10 Pages: S08002
  • DOI: doi:10.1029/2012SW000785
  • Peer Reviewed
• [Journal Article] A statistical study of energy release and transport midway between the magnetic reconnection and initial dipolarization regions in the near-Earth magnetotail associated with substorm expansion onsets (2012)
  • Author(s): Miyashita, Y., S. Machida, M. Nose, K. Liou, Y. Saito, and W. R. Paterson
  • Journal Title: J. Geophys. Res. Volume: 117 Pages: A11214
  • DOI: doi:10.1029/2012JA017925
  • Peer Reviewed
• [Journal Article] Magnetic field depression at the Earth's surface during energetic neutral atom emission fade-out in the inner magnetosphere (2011)
  • Author(s): Nose, M., S. Ohtani, P. C:son Brandt, T. Iyemori, K. Keika, and D. Y. Lee
  • Journal Title: J. Geophys. Res. Volume: 116 Pages: A06220
  • DOI: doi:10.1029/2010JA015799
  • Peer Reviewed
• [Journal Article] Oxygen torus in the deep inner magnetosphere and its contribution to recurrent process of O+-rich ring current formation (2011)
  • Author(s): Nose, M., K. Takahashi, R. R. Anderson, and H. J. Singer
  • Journal Title: J. Geophys. Res. Volume: 116 Pages: A10224
  • DOI: doi:10.1029/2010JA016651
  • Peer Reviewed
• [Journal Article] Modeling the super storm in November 2003 (2011)
  • Author(s): Fok, M.-C., T. E. Moore, S. P. Slinker, J. A. Fedder, D. C. Delcourt, M. Nose, and S.-H. Chen
  • Journal Title: J. Geophys. Res. Volume: 116 Pages: A00J17
  • DOI: doi:10.1029/2010JA015720
  • Peer Reviewed
• [Journal Article] Magnetic observatory data and metadata: Types and availability, in Geomagnetic Observations and Models (2011)
  • Author(s): Reay, S. J., D. C. Herzog, S. Alex, E. P. Kharin, S. McLean, M. Nose, and N. A. Sergeyeva
  • Journal Title: IAGA Special Sopron Book Series Volume: Vol. 5 Pages: 149-181
  • DOI: doi:10.1007/978-90-481-9858-0_7
  • Peer Reviewed
• [Journal Article] Geomagnetic indices, in Geomagnetic Observations and Models (2011)
  • Author(s): Menvielle, M., T. Iyemori, A. Marchaudon, and M. Nose
  • Journal Title: IAGA Special Sopron Book Series Volume: Vol. 5 Pages: 183-228
  • DOI: doi:10.1007/978-90-481-9858-0_8
  • Peer Reviewed
• [Journal Article] Evolution of ring current ion energy spectra during the storm recovery phase: Implication for dominant ion loss processes (2011)
  • Author(s): Keika, K., P. C. Brandt, M. Nose, and D. G. Mitchell
  • Journal Title: J. Geophys. Res. Volume: 116 Pages: A00J20
  • DOI: doi:10.1029/2010JA015628
  • Peer Reviewed
• [Journal Article] Magnetic local time dependence of geomagnetic disturbances contributing to the AU and AL indices (2011)
  • Author(s): Tomita, S., M. Nose, T. Iyemori, H. Toh, M. Takeda, J. Matzka, G. Bjornsson, T. Saemundsson, A. Janzhura, O. Troshichev, and G. Schwarz
  • Journal Title: Ann. Geophys Volume: 29 Pages: 673-678
  • DOI: doi:10.5194/angeo-29-673-2011
  • Peer Reviewed
• [Journal Article] Pi2 pulsations in the inner magnetosphere simultaneously observed by the Active Magnetospheric Particle Tracer Explorers/Charge Composition Explorer and Dynamics Explorer 1 satellites (2011)
  • Author(s): Teramoto, M., K. Takahashi, M. Nose, D.-H. Lee, and P. R. Sutcliffe
  • Journal Title: J. Geophys. Res. Volume: 116 Pages: A07225
  • DOI: doi:10.1029/2010JA016199
  • Peer Reviewed
• [Journal Article] Energetic O+ and H+ ions in the plasma sheet: Implications for the transport of ionospheric ions (2011)
  • Author(s): Ohtani,S., M. Nose, S. P. Christon, and A. T. Y. Lui
  • Journal Title: J. Geophys. Res Volume: 116 Pages: A10211
  • DOI: doi:10.1029/2010JA016532
  • Peer Reviewed
• [Journal Article] Geomagnetism and the orientation of temples in Thailand (2011)
  • Author(s): Iyemori, T., M. Hashizume, A. Saito, M. Nose, N. Choosakul, T. Tsuda, Y. Odagi
  • Journal Title: J. Siam Soc Volume: 99 Pages: 139-149
  • Peer Reviewed
• [Journal Article] Excitation mechanism of low-latitude Pi2 pulsations: Cavity mode resonance or BBF-driven process? (2010)
  • Author(s): Nose, M.
  • Journal Title: J. Geophys. Res Volume: 115 Pages: A07221
  • DOI: doi:10.1029/2009JA015205
  • Peer Reviewed
• [Journal Article] Magnetic field dipolarization in the deep inner magnetosphere and its role in development of O+-rich ring current (2010)
  • Author(s): Nose, M., H. Koshiishi, H. Matsumoto, P. C:son Brandt, K. Keika, K. Koga, T. Goka, and T. Obara
  • Journal Title: J. Geophys. Res. Volume: 115 Pages: A00J03
  • DOI: doi:10.1029/2010JA015321
  • Peer Reviewed
• [Journal Article] A new generation mechanism of butterfly pitch angle distributions of energetic ions: Multiple pitch angle scattering in the stretched magnetic field (2010)
  • Author(s): Shibahara, K., M. Nose, T. Fritz, and J. Niehof
  • Journal Title: J. Geophys. Res. Volume: 115 Pages: A07229
  • DOI: doi:10.1029/2010JA015281
  • Peer Reviewed
• [Journal Article] Pressure changes associated with substorm dipolarization in the near-Earth plasma sheet (2010)
  • Author(s): Miyashita, Y., S. Machida, A. Ieda, D. Nagata, Y. Kamide, M. Nose, K. Liou, T. Mukai, S. P. Christon, C. T. Russell, I. Shinohara, and Y. Saito
  • Journal Title: J. Geophys. Res Volume: 115 Pages: A12239
  • DOI: doi:10.1029/2010JA015608
  • Peer Reviewed
• [Journal Article] Multipoint observation of fast mode waves trapped in the dayside plasmasphere (2010)
  • Author(s): Takahashi, K., J. Bonnell, K.-H. Glassmeier, V. Angelopoulos, H. J. Singer, P. J. Chi, R. E. Denton, Y. Nishimura, D.-H Lee, M. Nose, and W. Liu
  • Journal Title: J. Geophys. Res Volume: 115 Pages: A12247
  • DOI: doi:10.1029/2010JA015956
  • Peer Reviewed
• [Journal Article] Mass-dependent evolution of ENA energy spectra during storm-time substorms: Implication for O+nonadiabatic acceleration (2010)
  • Author(s): Keika, K., P. C. Brandt, S. Ohtani, D. G. Mitchell, K. Min, M. Nose, T. Obara, H. Koshiishi, H. Matsumoto
  • Journal Title: J. Geophys. Res Volume: 115 Pages: A00I12
  • DOI: doi:10.1029/2010JA
  • Peer Reviewed
• [Presentation] son Brandt, Dipolarization in the deep inner magnetosphere and selective acceleration of O+ ions (2012)
  • Author(s): Nose., M., K. Takahashi, K. Keika, L. Kistler, H. Koshiishi, H. Matsumoto, K. Koga, and P. C
  • Organizer: 第132回地球電磁気・地球惑星圏学会総会
  • Place of Presentation: 北海道・札幌(Oral).
  • Year and Date: 20121000
• [Presentation] A new substorm index derived from high-resolution geomagnetic field data at low latitude (2012)
  • Author(s): Nose., M., T. Iyemori, L. Wang, A. Hitchman, J. Matzka, M. Feller, S. Egdorf, S. Gilder, N. Kumasaka, K. Koga, H. Matsumoto, H. Koshiishi, G. Cifuentes-Nava, J. J. Curto, A. Segarra, and C. Celik, Wp index
  • Organizer: XVth IAGA Workshop on Geomagnetic Observatory Instruments, Data Acquisition and Processing
  • Place of Presentation: San Fernando, Cadiz, Spain (Poster).
  • Year and Date: 20120600
• [Presentation] Evaluation of the earth-induced current contribution for a precise prediction of the Dst index (2011)
  • Author(s): Nose, M.
  • Organizer: 2011 AGU Fall Meeting
  • Place of Presentation: San Francisco, USA (Poster)
  • Year and Date: 20111200
• [Presentation] Oxygen torus in the deep inner magnetosphere and its contribution to recurrent process of O+-rich ring current formation (2011)
  • Author(s): Nose, M., K. Takahashi, R. R. Anderson, and H. J. Singer
  • Organizer: 第130回地球電磁気・地球惑星圏学会総会
  • Place of Presentation: 兵庫県・神戸(Oral).
  • Year and Date: 20111100
• [Presentation] Oxygen torus in the deep inner magnetosphere and its contribution to recurrent process of O+-rich ring current formation (2011)
  • Author(s): Nose, M., K. Takahashi, R. R. Anderson, and H. J. Singer
  • Organizer: Workshop on Physical Processes in Non-Uniform Finite Magnetospheric Systems
  • Place of Presentation: Fukuoka (Poster).
  • Year and Date: 20110900
• [Presentation] Temporal variation of the Earth-induced current contribution to the Dst index (2011)
  • Author(s): Nose, M.
  • Organizer: IUGG XXV 2011
  • Place of Presentation: Melbourne, Australia (Oral).
  • Year and Date: 20110700
• [Presentation] Singer Search for "oxygen torus" in the deep inner magnetosphere - Possible source of O+-rich ring current (2011)
  • Author(s): Nose, M., K. Takahashi, R. R. Anderson, and H. J.
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 千葉県・幕張 (Oral, Invited).
  • Year and Date: 20110500
• [Presentation] Detection of the oxygen torus in the inner magnetosphere using toroidal Alfven waves (2010)
  • Author(s): Nose, M., K. Takahashi, R. R. Anderson, and H. J. Singer
  • Organizer: 2010 AGU Fall Meeting
  • Place of Presentation: San Francisco, USA (Poster)
  • Year and Date: 20101200
• [Presentation] Temporal variation of the Earth-induced current contribution to the Dst index (2010)
  • Author(s): 能勢正仁
  • Organizer: 第128回地球電磁気・地球惑星圏学会総会
  • Place of Presentation: 沖縄県・那覇(Oral)
  • Year and Date: 20101000
• [Presentation] Magnetic field dipolarization in the deep inner magnetosphere and its role in development of O+-rich ring current (2010)
  • Author(s): 能勢正仁、越石英樹、松本晴久、P. C:son Brandt、桂華邦裕、古賀清一、五家建夫、小原隆博
  • Organizer: 第128回地球電磁気・地球惑星圏学会総会
  • Place of Presentation: 沖縄県・那覇 (Poster).
  • Year and Date: 20101000
• [Remarks]
  • URL: http://wdc.kugi.kyoto-u.ac.jp/~nose
• [Remarks]
  • URL: http://s-cubed.info