研究者詳細 - 家田　章正

論文 - 家田　章正

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Duskward displacement of plasmoids and reconnection in the near-Earth magnetotail 査読有り

Ieda Akimasa, Miyashita Yukinaga

EARTH PLANETS AND SPACE 76 巻 2024年12月

地球電離圏の電荷交換衝突におけるカーブ軌道効果査読有り

Ieda, A.

Journal of Geophysical Research: Space Physics 2022年1月

担当区分：筆頭著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

電離圏と磁気圏の結合を理解するためには、電離圏電気伝導度を定量的に把握することが必要である。電気伝導度の主体は、イオンと中性粒子の衝突断面積である。この断面積は、２つの成分を持つが両成分の和ではなく、高温では電荷交換成分に、低温では中性粒子の分極による成分に漸近する。両成分が等しくなる遷移温度は、電離圏温度（200-2000 K）付近である。これまで電離圏分野の古典的研究では、遷移温度において、トータルの衝突断面積は、分極成分や電荷交換成分に等しいと近似されてきた。すなわち、両成分は結合しないと仮定されてきた。一方、原子衝突分野の研究では、トータルの断面積は、電離圏の古典的研究よりも1.4倍大きいと近似されている。この電離圏分野と原子衝突分野の違いの根拠は不明瞭であった。

本研究では、電荷交換衝突と分極衝突の結合を、カーブ粒子軌道効果により表現した。すなわち、粒子軌道が曲がることにより電荷交換衝突断面積が実効的に増大する効果を取り入れた。その結果、遷移温度において、トータルの断面積は、電荷交換成分から22%増大することを見いだした。原子衝突分野では、この結合を物理的意味のない二乗平均により表現したために過大評価している。電離圏分野の古典的研究がこの結合を無視した原因は、カーブ粒子軌道効果と、外部境界付近をかすめる軌道の小さい効果とを、混同したことであると思われる。もうひとつの原因は、結合を表現する理論式がなかったためであると思われる。その様な理論式は本研究で初めて導いたので、今後は電荷交換衝突と分極衝突の結合を無視せずに含めて、イオン-中性衝突断面積を計算すれば良い。

DOI： 10.1029/2020JA028441

Atomic Oxygen Ion‐Neutral Collision Frequency Models at Ionospheric Temperatures 査読有り

Ieda, A.

Journal of Geophysical Research: Space Physics 2021年1月

Ion-Neutral Collision Frequencies for Calculating Ionospheric Conductivity 査読有り

Ieda A.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125 巻 ( 2 ) 2020年2月

Location and Timing of Magnetic Reconnections in Earth's Magnetotail: Accomplishments of the 29-Year Geotail Near- Earth Magnetotail Survey 査読有り国際共著

Nagai, T., Shinohara, I., Saito, Y., Ieda, A., & Nakamura, R.

Journal of Geophysical Research: Space Physics 128 巻 2023年12月

Simultaneous observation of auroral substorm onset in Polar satellite global images and ground-based all-sky images 査読有り

Ieda Akimasa, Kauristie Kirsti, Nishimura Yukitoshi, Miyashita Yukinaga, Frey Harald U., Juusola Liisa, Whiter Daniel, Nose Masahito, Fillingim Matthew O., Honary Farideh, Rogers Neil C., Miyoshi Yoshizumi, Miura Tsubasa, Kawashima Takahiro, Machida Shinobu

EARTH PLANETS AND SPACE 70 巻 2018年5月

Stepwise tailward retreat of magnetic reconnection: THEMIS observations 査読有り

Ieda, A. , Y. Nishimura, Y. Miyashita, V. Angelopoulos, A. Runov, T. Nagai, H. U. Frey, D. H. Fairfield, J. A. Slavin, H. Vanhämaki, H. Uchino, R. Fujii, Y. Miyoshi, and S. Machida

J. Geophys. Res. Space Physics 121 巻頁： 4548-4568 2016年5月

担当区分：筆頭著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Auroral stepwise poleward expansions were clarified by investigating a multiple-onset substorm that occurred on 27 February 2009. Five successive auroral brightenings were identified in all-sky images, occurring at approximately 10 min intervals. The first brightening was a faint precursor. The second brightening had a wide longitude; thus, it represented the Akasofu substorm onset. Other brightenings expanded poleward; thus, they were interpreted to be auroral breakups. These breakups occurred stepwise; that is, later breakups were initiated at higher latitudes. Corresponding reconnection signatures were studied using Time History of Events and Macroscale Interactions during Substorms (THEMIS) satellite observations from between 8 and 24 Re down the magnetotail. The Akasofu substorm onset was not accompanied by a clear reconnection signature in the tail. In contrast, the three subsequent auroral breakups occurred simultaneously (within a few min) with three successive fast flows at 24 Re; thus, these were interpreted to be associated with impulsive reconnection episodes. These three fast flows consisted of a tailward flow and two subsequent earthward flows. The flow reversal at the second breakup indicated that a tailward retreat of the near-Earth reconnection site occurred during the substorm expansion phase. In addition, the earthward flow at the third breakup was consistent with the classic tailward retreat near the end of the expansion phase; therefore, the tailward retreat is likely to have occurred in a stepwise manner. We interpreted the stepwise characteristics of the tailward retreat and poleward expansion to be potentially associated by a stepwise magnetic flux pile-up.

DOI： 10.1002/2015JA022244

Approximate forms of daytime ionospheric conductance 査読有り

Ieda, A., S. Oyama, H. Vanhamäki, R. Fujii, A. Nakamizo, O. Amm, T. Hori, M. Takeda, G. Ueno, A. Yoshikawa, R. J. Redmon, W. F. Denig, Y. Kamide, and N. Nishitani

J. Geophys. Res. 119 巻 2014年11月

担当区分：筆頭著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

The solar zenith angle (SZA) dependence of the conductance is studied and a simple theoretical form for the Hall-to-Pedersen conductance ratio is developed, using the peak plasma production height. The European Incoherent Scatter (EISCAT) radar observations at Tromso (67 MLAT) on 30 March 2012 were used to calculate the conductance. The daytime electric conductance is associated with plasma created by solar extreme ultraviolet radiation incident on the neutral atmosphere of the Earth. However, it has been uncertain whether previous conductance models are consistent with the ideal Chapman theory for such plasma productions. We found that the SZA dependence of the conductance is consistent with the Chapman theory after simple modifications. The Pedersen conductance can be understood by approximating the plasma density height profile as being flat in the topside E region, and by taking into account the upward gradient of atmospheric temperature. An additional consideration is necessary for the Hall conductance, which decreases with increasing SZA more rapidly than the Pedersen conductance. This rapid decrease is presumably caused by a thinning of the Hall conductivity layer from noon towards nighttime. We expressed this thinning in terms of the peak production height in the Chapman theory.

DOI： 10.1002/2014JA020665

A Statistical Study of Near-Earth Magnetotail Evolution During Pseudosubstorms and Substorms With THEMIS Data

Fukui Kento, Miyashita Yukinaga, Machida Shinobu, Miyoshi Yoshizumi, Ieda Akimasa, Nishimura Yukitoshi, Angelopoulos Vassilis

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125 巻 ( 1 ) 2020年1月

Simultaneous observation of auroral substorm onset in Polar satellite global images and ground-based all-sky images (vol 70, 73, 2018)

EARTH PLANETS AND SPACE 71 巻 2019年7月

Revisiting substorm events with preonset aurora

Miyashita Yukinaga, Ieda Akimasa

ANNALES GEOPHYSICAE 36 巻 ( 5 ) 頁： 1419-1438 2018年10月

Theory, modeling, and integrated studies in the Arase (ERG) project

Seki Kanako, Miyoshi Yoshizumi, Ebihara Yusuke, Katoh Yuto, Amano Takanobu, Saito Shinji, Shoji Masafumi, Nakamizo Aoi, Keika Kunihiro, Hori Tomoaki, Nakano Shin'ya, Watanabe Shigeto, Kamiya Kei, Takahashi Naoko, Omura Yoshiharu, Nose Masahito, Fok Mei-Ching, Tanaka Takashi, Ieda Akimasa, Yoshikawa Akimasa

EARTH PLANETS AND SPACE 70 巻 2018年2月

Visualization tool for three-dimensional plasma velocity distributions (ISEE_3D) as a plug-in for SPEDAS

Keika Kunihiro, Miyoshi Yoshizumi, Machida Shinobu, Ieda Akimasa, Seki Kanako, Hori Tomoaki, Miyashita Yukinaga, Shoji Masafumi, Shinohara Iku, Angelopoulos Vassilis, Lewis Jim W., Flores Aaron

EARTH PLANETS AND SPACE 69 巻 2017年12月

A direct link between chorus emissions and pulsating aurora on timescales from milliseconds to minutes: A case study at subauroral latitudes 査読有り

Ozaki, M., S. Yagitani, K. Sawai, K. Shiokawa, Y. Miyoshi, R. Kataoka, A. Ieda, Y. Ebihara, M. Connors, I. Schofield

J. Geophys. Res. Space Physics 120 巻頁： 9617-9631 2015年11月

Statistical visualization of the Earth's magnetotail and the implied mechanism of substorm triggering based on superposed-epoch analysis of THEMIS data 査読有り

Machida, S., Y. Miyashita, A. Ieda, M. Nosé, V. Angelopoulos, and J. P. McFadden

Ann. Geophys. 32 巻頁： 99–111 2014年2月

Ground-based ELF/VLF chorus observations at subauroral latitudes - VLF-CHAIN Campaign 査読有り

Shiokawa, K., Y. Yokoyama, A. Ieda, Y. Miyoshi, R. Nomura, S. Lee, N. Sunagawa, Y. Miyashita, M. Ozaki, K. Ishizaka, S. Yagitani, R. Kataoka, F. Tsuchiya, I. Schofield, and M. Connors

J. Geophys. Res. 119 巻 2014年

General solution for calculating polarization electric fields in the auroral ionosphere and application examples 査読有り

Amm, O., R. Fujii, H. Vanhamäki, A. Yoshikawa, and A. Ieda

J. Geophys. Res. 118 巻頁： A11217 2013年5月

An application of the finite length Cowling channel model to auroral arcs with longitudinal variations 査読有り

Fujii, R., O. Amm, H. Vanhamäki, A. Yoshikawa, and A. Ieda

J. Geophys. Res. 117 巻頁： A11217 2012年11月

Observed correlation between pulsating aurora and chorus waves at Syowa Station in Antarctica 査読有り

Ozaki, M., S. Yagitani, K. Ishizaka, K. Shiokawa, Y. Miyoshi, A. Kadokura, H. Yamagishi, R. Kataoka, A. Ieda, Y. Ebihara, N. Sato, and I. Nagano

J. Geophys. Res. 117 巻頁： A08211 2012年

Rayleigh-Taylor type instability in auroral patches 査読有り

Shiokawa, K., A. Nakajima, A. Ieda, K. Sakaguchi, R. Nomura, T. Aslaksen,M. Greffen, and E. Donovan

J. Geophys. Res. 115 巻頁： A02211, doi:10.1029/2009JA014273 2010年2月

A statistical investigation of the Cowling channel efficiency in the auroral zone 査読有り

Amm, O., R. Fujii, K. Kauristie, A. Aikio, A. Yoshikawa, A. Ieda, and H. Vanhamäki

J. Geophys. Res. 116 巻頁： A02304, doi:10.1029/2010JA015988 2010年

Reformulation and energy flow of the Cowling channel 査読有り

Fujii, R., O. Amm, A. Yoshikawa, A. Ieda, and H. Vanhamäki

J. Geophys. Res. 116 巻頁： A02305, doi:10.1029/2010JA015989 2010年

Pressure changes associated with substorm depolarization in the near-Earth plasma sheet 査読有り

Y. Miyashita, S. Machida, A. Ieda, D. Nagata, Y. Kamide, M. Nosé, K. Liou, T. Mukai, S. P. Christon, C. T. Russell, I. Shinohara, and Y. Saito

J. Geophys. Res. 115 巻頁： A12239, doi:10.1029/2010JA015608 2010年

Optical and particle observations of type B red aurora 査読有り

Ebihara, Y., T. Sakanoi, K. Asamura, M. Hirahara, and A. Ieda

Geophys. Res. Lett. 36 巻頁： L20105, doi:10.1029/2009GL041037 2009年10月

Geotail observations of plasma sheet ion composition over 16 years: On variations of average plasma ion mass and O+ triggering substorm model 査読有り

Nose, M., A. Ieda, and S. P. Christon

J. Geophys. Res. 114 巻頁： A07223, doi:10.1029/2009JA014203 2009年7月

Statistical visualization of the Earth's magnetotail based on Geotail data and the implied substorm model 査読有り

Machida, S., Y. Miyashita, A. Ieda, M. Nosé, D. Nagata, K. Liou, T. Obara, A. Nishida, Y. Saito, and T. Mukai

Ann. Geophys. 27 巻頁： 1035-1046 2009年

Longitudinal development of a substorm brightening arc 査読有り

Shiokawa, K., A. Ieda, A. Nakajima, K. Sakaguchi, R. Nomura, T. Aslaksen, M. Greffen, E. Spanswick, E. Donovan, S. B. Mende, J. McFadden, K.-H. Glassmeier, V. Angelopoulos, and Y. Miyashita

Ann. Geophys. 27 巻 ( 5 ) 頁： 1935-1940 2009年

Mapping of ionospheric parameters for space weather predictions: A concise review

Kamide, Y; Ieda, A

SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES 51 巻 ( 10 ) 頁： 1589 - 1599 2008年10月

Longitudinal association between magnetotail reconnection and auroral breakup based on Geotail and Polar observations 査読有り

Ieda A., Fairfield D. H., Slavin J. A., Liou K., Meng C. -I., Machida S., Miyashita Y., Mukai T., Saito Y., Nose M., Shue J. -H., Parks G. K., Fillingim M. O.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 113 巻 ( A8 ) 頁： A08207, 10.1029/2008JA013127 2008年8月

*Longitudinal association between magnetotail reconnection and auroral breakup based on Geotail and Polar observations 査読有り

Ieda, A., D. H. Fairfield, J. A. Slavin, K. Liou, C.-I. Meng, S. Machida, Y. Miyashita, T. Mukai, Y. Saito, M. Nosé, J.-H. Shue, G. K. Parks, and M. O. Fillingim

J. Geophys. Res. 113 巻 ( A8 ) 頁： A08207, 10.1029/2008JA013127 2008年8月

*Two classes of earthward fast flows in the plasma sheet 査読有り

J.-H. Shue, A. Ieda, A. T. Y. Lui, G. K. Parks, T. Mukai, and S. Ohtani

J. Geophys. Res. 113 巻 ( A2 ) 頁： A002205, doi:10.1029/2007JA012456 2008年2月

Mapping of ionospheric parameters for space weather predictions: A concise review 招待有り査読有り

Kamide Y., and A. Ieda

Sci. China Ser. E-Tech. Sci. 51 巻 ( 10 ) 頁： 1589-1599, doi:10.1007/s11431-008-0254-y 2008年

Towards understanding the electrodynamics of the 3-dimensional high-latitude ionosphere: present and future, 査読有り

Amm, O., A. Aruliah, S. C. Buchert, R. Fujii, J.W. Gjerloev, A. Ieda, T. Matsuo, C. Stolle, H. Vanham¨aki, and A. Yoshikawa

Ann. Geophys. 26 巻頁： 3913–3932 2008年

Simultaneous ground and satellite observations of an isolated proton arc at subauroral latitudes 査読有り

Sakaguchi, K., K. Shiokawa, A. Ieda, Y. Miyoshi, Y. Otsuka, T. Ogawa, M. Connors, E. F. Dononvan, and F. J. Rich

J. Geophys. Res 112 巻頁： A04202, doi:10.1029/2006JA012135 2007年

ERG - A small-satellite mission to investigate the dynamics of the inner magnetosphere 査読有り

Shiokawa, K., K. Seki, Y. Miyoshi, A. Ieda, T. Ono, M. Iizima, T. Nagatsuma, T. Obara, T. Takashima, K. Asamura, Y. Kasaba, A. Matsuoka, Y. Saito, H. Saito, M. Hirahara, Y. Tonegawa, F. Toyama, M. Tanaka, M. Nose, Y. Kasahara, K. Yumoto, H. Kawano, A. Yoshikawa, Y. Ebihara, A. Yukimatsu, N. Sato, S. Watanabe, and the Inner Magnetosphere Subgroup in the Society of Geomagnetism and Earth, Planetary and Space Sciences

Adv. Space Res. 38 巻 ( 8 ) 頁： 1861-1869 2006年

Geotail observations of signatures in the near-Earth magnetotail for the extremely intense substorms of the 30 October 2003 storm 査読有り

Miyashita Y., Y. Miyoshi, Y. Matsumoto, A. Ieda, Y. Kamide, M. Nosé, S. Machida, H. Hayakawa, R. W. McEntire, S. P. Christon, D. S. Evans, and O. A. Troshichev

J. Geophys. Res 110 巻頁： A09S25, doi:10.1029/2005JA011070 2005年

Magnetotail response to prolonged southward IMF Bz intervals: Loading, unloading, and continuous magnetospheric dissipation 査読有り

Tanskanen, E. I., J. A Slavin, D. H. Fairfield, D. G Sibeck, J. Gjerloev, T. Mukai, A. Ieda, and T. Nagai

J. Geophys. Res 110 巻頁： A03216, doi: 10.1029/2004JA010561 2005年

Real-time modeling of the ionosphere using GEDAS/KRM for space weather

Ieda, A. and Y. Kamide

Proceedings of The 7th International School/Symposium for Space Simulations 頁： 259-260 2005年

Solar wind control of the radial distance of the magnetic reconnection site in the magnetotail 査読有り

Nagai T., M. Fujimoto, R. Nakamura, W. Baumjohann, A. Ieda, I. Shinohara, S. Machida, Y. Saito, and T. Mukai

J. Geophys. Res 110 巻頁： A09208, doi:10.1029/2005JA011207 2005年

Plasmoids observed in the near-Earth magnetotail at X~-7 Re 査読有り

J. Geophys. Res 110 巻頁： A12214, doi:10.1029/2005JA011263 2005年

Difference between earthward and tailward flows in their dependences on geomagnetic and IMF conditions 査読有り

A Ieda, T Mukai, S Machida, JH Shue, SI Ohtani, T Nagai, Y Saito

Frontiers in Magnetospheric Plasma Physics: Celebrating 10 Years of Geotail Operation 16 巻頁： 186 - 189 2005年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：ELSEVIER SCIENCE BV

Earthward and tailward perpendicular fast flows in the plasma sheet were studied and their differences in response to geomagnetic conditions and to interplanetary magnetic field (IMF) conditions are discussed. We first identified the plasma sheet from 3.5 years of Geotail plasma and magnetic filed observations between 8 and 32 R-E down the tail. We then studied occurrence rates of fast flows during geomagnetically quiet and active intervals as identified by Kp and ASY indices, and during northward and southward IMF intervals. As a result, both earthward and tailward flows were observed more often during active or southward IMF intervals than during quiet or northward IMF intervals, as expected. On the other hand, we found that there is a difference between earthward and tailward flows: Dependences on geomagnetic conditions are more evident in tailward flows than in earthward flows. We further discuss that tailward flows indicate the substorm expansion phase better than earthward flows do.

Web of Science

Difference in magnetotail variations between intense and weak substorms 査読有り

Miyashita Y., Y. Kamide, S. Machida, K. Liou, T. Mukai, Y. Saito, A. Ieda, C.-I. Meng, and G. K. Parks

J. Geophys. Res 109 巻頁： doi:10.1029/2004JA010588 2004年

Roles of the magnetic reconnection in the Earth's magnetotail during substorms: Geotail observations 招待有り査読有り

Machida, S., A. Ieda, and Y. Miyashita

Physics of Magnetic Reconnection in High-Temperature Plasmas, edited by M. Ugai, Research Signpost, Kerala, India 頁： 161-191 2004年

Difference between earthward and tailward flows in their dependences on geomagnetic and IMF conditions 査読有り

Ieda, A., T. Mukai, S. Machida, J.-H. Shue, S.-I. Ohtani, T. Nagai, and Y. Saito

COSPAR Colloquia Series 16 巻頁： 186-189 2004年

Quiet time magnetotail plasma flow: Coordinated Polar ultraviolet images and Geotail observations 査読有り

Ieda A, Shue JH, Liou K, Ohtani SI, Meng CI, Fairfield DH, Mukai T, Saito Y, Machida S, Nagai T, Parks GK

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 108 巻 ( A9 ) 頁： 10.1029/2002JA009739 2003年9月

*Quiet time magnetotail plasma flow: Coordinated Polar ultraviolet images and Geotail observations 査読有り

Ieda, A., J.-H. Shue, K. Liou, S.-I. Ohtani, C.-I. Meng, D.H. Fairfield, T. Mukai, Y. Saito, S. Machida, T. Nagai, and G.K. Parks

J. Geophys. Res. 108 巻頁： 10.1029/2002JA009739 2003年

Quantitative relationships between rlasma sheet fast flows and nightside auroral power 査読有り

J.-H. Shue, S. Ohtani, P.T. Newell, K. Liou, C.-I. Meng, A. Ieda, and T. Mukai

J. Geophys. Res 108 巻頁： 10.1029/2002JA009794 2003年

Geotail observations of magnetic flux ropes in the plasm a sheet, 査読有り

Slavin, J.A., R.P. Lepping, J. Gjerloev, D.H. Fairfield, M. H esse, C.J. Owen, M.B. Moldwin, T. Nagai, A. Ieda, and T. Mukai

J. Geophys. Res 108 巻頁： 10.1029/2002JA009557 2003年

Simultaneous observations of earthward flow burst and plasmoid ejection during magnetospheric substorms 査読有り

Slavin, J.A., D.H. Fairfield, R.P. Lepping, M. Hesse, A. Ieda, E. Tanskanen, N. Ostgaard, T. Mukai, T. Nagai, H.J. Singer, and P.R. Sutcliffe

J. Geophys. Res 107 巻頁： 10.1029/2000JA003501 2002年

Magnetospheric signature of an ionospheric traveling convection vortex event 査読有り

Moretto, T., M. Hesse, A. Yahnin, A. Ieda, D. Man, and J.F. Waternann

J. Geophys. Res 107 巻頁： 10.1029/2001JA000049 2002年

Plasmoid ejection and auroral brightenings 査読有り

A Ieda, DH Fairfield, T Mukai, Y Saito, S Kokubun, K Liou, CI Meng, GK Parks, MJ Brittnacher

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 106 巻 ( A3 ) 頁： 3845 - 3857 2001年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER GEOPHYSICAL UNION

Geotail plasma and magnetic field observations of 24 plasmoids between 21 and 29 R-E have been compared with Polar ultraviolet observations of auroral brightenings. Both single and multiple plasmoids almost always corresponded to brightenings, but the brightenings were sometimes weak and spatially limited and did not always grow to a global substorm. Even a case where a plasmoid event occurred with fast postplasmoid flow corresponded to a weak brightening but no substorm. Some brightenings did not correspond to plasmoids, but these brightenings were observed away from the longitude of Geotail, indicating that plasmoids have a small longitudinal extent in the near tail. The plasmoids were occasionally observed before the brightenings but more frequently were observed 0-2 min after the brightenings with the delays probably due to the transit time to the observation point. It seems likely that; formation of a near-Earth neutral line causes each brightening in the polar ionosphere. but these formations do not always lead to a full-fledged substorm. What additional circumstance causes development of a full, large-scale substorm remains an open question.

Web of Science

*Plasmoid ejection and auroral brightenings 査読有り

Ieda, A., D.H. Fairfield, T. Mukai, Y. Saito, S. Kokubun, K. Liou, C.-I. Meng, G.K. Parks, and M.J. Brittnacher

J. Geophys. Res. 106 巻頁： 3845-3857 2001年

Statistical visualization of Earth's magnetotail during substorms by means of multidimensional superposed epoch analysis with Geotail data 査読有り

Machida, S., A. Ieda, T. Mukai, Y. Saito, and A. Nishida

J. Geophys. Res. 105 巻頁： 25,291-25,303 2000年

GEOTAIL observations of flow velocity and north-south magnetic field variations in the near and mid-distant tail associated with substorm onsets 査読有り

Machida, S., Y. Miyashita, A. Ieda, A. Nishida, T. Mukai, Y. Saito, and S. Kokubun,

Geophys. Res. Lett 26 巻頁： 635-638 1999年

Statistical analysis of the plasmoid evolution with Geotail observations 査読有り

Ieda, A; Machida, S; Mukai, T; Saito, Y; Yamamoto, T; Nishida, A; Terasawa, T; Kokubun, S

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 103 巻 ( A3 ) 頁： 4453 - 4465 1998年3月

*Statistical analysis of the plasmoid evolution with Geotail observations 査読有り

Ieda, A., S. Machida, T. Mukai, Y. Saito, T. Yamamoto, A. Nishida, T. Terasawa, and S. Kokubun

J. Geophys. Res. 103 巻頁： 4453-4465 1998年

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