Publications

Ohmori K., Saitoh T., Fujimoto A., Miyano E., "Variable Selection Methods for Multivariate Time Series Data Using Multivariate Granger Causality", Proceedings of International Conference on Artificial Life and Robotics, p.922-926, doi:10.5954/icarob.2025.gs6-2, 2025.

Tamura I., Fujimoto A., Kondo S., Noguchi R., "Shape-Preserving Embedding Technique for Binary Classification of Video Image of the Solar Surface", Proceedings of International Conference on Artificial Life and Robotics, p.835 - 838, doi:10.5954/icarob.2025.gs3-1, 2025.

Hiroshige Y.,  Fujimoto A., Ikeda A., Abe S., Yoshikawa A.,"A penalized motion detection model for extracting ionospheric echoes from low signal-to-noise ratio Ionogram video mages",Proceedings of International Conference on Artificial Life and Robotics, p.1025-1031, doi:10.5954/icarob.2024.gs5-3, 2024. 

Ikeda, A., Shinohara, M., Nozawa, H., Fujimoto, A., Otake, T., Nishimura, T.,"Evaluation of Student-Centered Science Communications through Text Analysis of Open-Ended Survey Questions", 工学教育, 公益社団法人 日本工学教育協会, Vol.72, No.6, p.6_20-6_26, doi:10.4307/jsee.72.6_20, 2024.

Hayashi M., Yoshikawa A., Fujimoto A.,"Mid-Latitude Ground Magnetic and Electric Field Responses Associated with SCW Development During Substorms",Springer Proceedings in Physics, Vol.303, p.63-74,doi:10.1007/978-981-97-0142-1_7, 2024.

Kitamura K., Masui H., Abe S., Uozumi T., Teramoto M., Fujimoto A., Sano K., Yoshikawa A., Cho M., A Framework for Space Education Integrating Science and Engineering through the development of 2U CubeSat, Proceedings of the International Astronautical Congress, IAC, 2-B, pp. 1305 - 1309, 2024.

Hamid N.S.A., Halim R.A.R., Sarudin I., Yoshikawa A., Fujimoto A.,"Examining Solar Flare Effects on Earth’s Ionosphere Using Ground-Based Measurements",Sains Malaysiana, Vol.52, No.8, p.2309-2322,doi:10.17576/jsm-2023-5208-11, 2023.

Bello S.A., Abdullah M., Hamid N.S.A., Yusuf K.A., Yoshikawa A., Fujimoto A.,"Robust least square modelling for selected daytime ionospheric parameters using geomagnetic observations at low latitudes", Advances in Space Research, Vol.72, No.5, p.1615-1633, doi:10.1016/j.asr.2023.04.040, 2023.

Ranasinghe, M., A. Fujimoto, A. Yoshikawa, and C. Jayaratne, “Seasonal variation of inter-hemispheric field-aligned currents deduced from time-series analysis of the equatorial geomagnetic field data during solar cycle 23–24”, Earth, Planets and Space, Vol.73, No.146, doi:10.1186/s40623-021-01481-6, 2021.

Baumjohann, W., A. Matsuoka, Y. Narita, W. Magnes, D. Heyner, K. H. Glassmeier, R. Nakamura, D. Fischer, F. Plaschke, M. Volwerk, T. L. Zhang, H. U. Auster, I. Richter, A. Balogh, C. M. Carr, M. Dougherty, T. S. Horbury, H. Tsunakawa, M. Matsushima, M. Shinohara, H. Shibuya, T. Nakagawa, M. Hoshino, Y. Tanaka, B. J. Anderson, C. T. Russell, U. Motschmann, F. Takahashi, and A. Fujimoto, “The BepiColombo–Mio Magnetometer en Route to Mercury”, Space Science Reviews, 216(8), doi:10.1007/s11214-020-00754-y, 2020.

Fujimoto, A., A. Yoshikawa, T. Uozumi, and S. Abe, “Seasonal dependence of semidiurnal equatorial magnetic variation during quiet and disturbed periods”, E3S Web of Conferences, 127, doi:10.1051/e3sconf/201912702025. 2019

Teramoto, M., T. Hori, S. Saito, Y. Miyoshi, S. Kurita, N. Higashio, A. Matsuoka, Y. Kasahara, Y. Kasaba, T. Takashima, R. Nomura, M. Nosé, A. Fujimoto, Y. M. Tanaka, M. Shoji, Y. Tsugawa, M. Shinohara, I. Shinohara, J. B. Blake, J. F. Fennell, S. G. Claudepierre, D. L. Turner, C. A. Kletzing, D. Sormakov, and O. Troshichev, “Remote Detection of Drift Resonance Between Energetic Electrons and Ultralow Frequency Waves: Multisatellite Coordinated Observation by Arase and Van Allen Probes”, Geophysical Research Letters, 46(21), pp.11642-11651, doi:10.1029/2019gl084379, (2019/11). 2019

Tanaka, Y. M., T. Nishiyama, A. Kadokura, M. Ozaki, Y. Miyoshi, K. Shiokawa, S. I. Oyama, R. Kataoka, M. Tsutsumi, K. Nishimura, K. Sato, Y. Kasahara, A. Kumamoto, F. Tsuchiya, M. Fukizawa, M. Hikishima, S. Matsuda, A. Matsuoka, I. Shinohara, M. Nosé, T. Nagatsuma, M. Shinohara, A. Fujimoto, M. Teramoto, R. Nomura, A. S. Yukimatu, K. Hosokawa, M. Shoji, and R. Latteck, “Direct Comparison Between Magnetospheric Plasma Waves and Polar Mesosphere Winter Echoes in Both Hemispheres”, Journal of Geophysical Research: Space Physics, 124(11), pp.9626-9639, doi:10.1029/2019ja026891, (2019/11). 2019

Soares, G., Y. Yamazaki, J. Matzka, K. Pinheiro, C. Stolle, P. Alken, A. Yoshikawa, T. Uozumi, A. Fujimoto, and A. Kulkarni, “Longitudinal variability of the equatorial counter electrojet during the solar cycle 24”, Studia Geophysica et Geodaetica, 63(2), pp.304-319, doi:10.1007/s11200-018-0286-0, (2019/04). 2019

Nakahara, M., A. Yoshikawa, T. Uozumi, and A. Fujimoto, “Electromagnetic induction responses to geomagnetic disturbances at low-and-mid-latitudes”, Journal of Physics: Conference Series, 1152, doi:10.1088/1742-6596/1152/1/012035, (2019). 2019

Imajo, S., M. Nosé, S. Kasahara, S. Yokota, A. Matsuoka, K. Keika, T. Hori, M. Teramoto, K. Yamamoto, S. Oimatsu, R. Nomura, A. Fujimoto, I. Shinohara, and Y. Miyoshi, “Meridional Distribution of Middle‐Energy Protons and Pressure‐Driven Currents in the Nightside Inner Magnetosphere: Arase Observations”, Journal of Geophysical Research: Space Physics, 124(7), pp.5719-5733, doi:10.1029/2019ja026682, (2019/07). 2019

Bolaji, O. S., E. O. Oyeyemi, O. E. Jimoh, A. Fujimoto, P. H. Doherty, O. P. Owolabi, J. O. Adeniyi, E. O. Falayi, E. Abe, R. O. Kaka, and A. Kotoye, “Morphology of the equatorial ionization anomaly in Africa and Middle East due to a sudden stratospheric warming event”, Journal of Atmospheric and Solar-Terrestrial Physics, 184, pp.37-56, doi:10.1016/j.jastp.2019.01.006, (2019/03). 2019

Bello, S. A., M. Abdullah, N. S. A. Hamid, B. W. Reinisch, A. Yoshikawa, and A. Fujimoto, “Response of Ionospheric Profile Parameters to Equatorial Electrojet Over Peruvian Station”, Earth and Space Science, 6(4), pp.617-628, doi:10.1029/2018ea000537, (2019/04). 2019

Akiyama, T., A. Yoshikawa, A. Fujimoto, and T. Uozumi, “Relationship between plasma bubble and ionospheric current, equatorial electrojet, and equatorial counter electrojet”, Journal of Physics: Conference Series, 1152, doi:10.1088/1742-6596/1152/1/012022, (2019). 2019

Fujimoto, A., A. Yoshikawa, and A. Ikeda, “Global response of Magnetic field and Ionosonde observations to intense solar flares on 6 and 10 September 2017”, E3S Web of Conferences, 62, doi:10.1051/e3sconf/20186201007, (2018/11). 2018

Yamamoto, K., M. Nosé, S. Kasahara, S. Yokota, K. Keika, A. Matsuoka, M. Teramoto, K. Takahashi, S. Oimatsu, R. Nomura, M. Vellante, B. Heilig, A. Fujimoto, Y. Tanaka, M. Shinohara, I. Shinohara, and Y. Miyoshi, “Giant Pulsations Excited by a Steep Earthward Gradient of Proton Phase Space Density: Arase Observation”, Geophysical Research Letters, 45(14), pp.6773-6781, doi:10.1029/2018gl078293, (2018/07). 2018

Shiokawa, K., M. Ozaki, A. Kadokura, Y. Endo, T. Sakanoi, S. Kurita, Y. Miyoshi, S. I. Oyama, M. Connors, I. Schofield, J. M. Ruohoniemi, M. Nośe, T. Nagatsuma, K. Sakaguchi, D. G. Baishev, A. Pashinin, R. Rakhmatulin, B. Shevtsov, I. Poddelsky, M. Engebretson, T. Raita, Y. M. Tanaka, M. Shinohara, M. Teramoto, R. Nomura, A. Fujimoto, A. Matsuoka, N. Higashio, T. Takashima, I. Shinohara, and J. M. Albert, “Purple Auroral Rays and Global Pc1 Pulsations Observed at the CIR‐Associated Solar Wind Density Enhancement on 21 March 2017”, Geophysical Research Letters, 45(20), pp.10,819-810,828, doi:10.1029/2018gl079103, (2018/10). 2018

Oimatsu, S., M. Nosé, M. Teramoto, K. Yamamoto, A. Matsuoka, S. Kasahara, S. Yokota, K. Keika, G. Le, R. Nomura, A. Fujimoto, D. Sormakov, O. Troshichev, Y. M. Tanaka, M. Shinohara, I. Shinohara, Y. Miyoshi, J. A. Slavin, R. E. Ergun, and P. A. Lindqvist, “Drift-Bounce Resonance Between Pc5 Pulsations and Ions at Multiple Energies in the Nightside Magnetosphere: Arase and MMS Observations”, Geophysical Research Letters, 45(15), pp.7277-7286, doi:10.1029/2018gl078961, (2018/07). 2018

Nosé, M., A. Matsuoka, A. Kumamoto, Y. Kasahara, J. Goldstein, M. Teramoto, F. Tsuchiya, S. Matsuda, M. Shoji, S. Imajo, S. Oimatsu, K. Yamamoto, Y. Obana, R. Nomura, A. Fujimoto, I. Shinohara, Y. Miyoshi, W. S. Kurth, C. A. Kletzing, C. W. Smith, and R. J. MacDowall, “Longitudinal Structure of Oxygen Torus in the Inner Magnetosphere: Simultaneous Observations by Arase and Van Allen Probe A”, Geophysical Research Letters, 45(19), pp.10,177-110,184, doi:10.1029/2018gl080122, (2018/10). 2018

Nosé, M., A. Matsuoka, S. Kasahara, S. Yokota, M. Teramoto, K. Keika, K. Yamamoto, R. Nomura, A. Fujimoto, N. Higashio, H. Koshiishi, S. Imajo, S. Oimatsu, Y. M. Tanaka, M. Shinohara, I. Shinohara, and Y. Miyoshi, “Magnetic Field Dipolarization and Its Associated Ion Flux Variations in the Dawnside Deep Inner Magnetosphere: Arase Observations”, Geophysical Research Letters, 45(16), pp.7942-7950, doi:10.1029/2018gl078825, (2018/08). 2018

Matsuoka, A., M. Teramoto, R. Nomura, M. Nosé, A. Fujimoto, Y. Tanaka, M. Shinohara, T. Nagatsuma, K. Shiokawa, Y. Obana, Y. Miyoshi, M. Mita, T. Takashima, and I. Shinohara, “The ARASE (ERG) magnetic field investigation”, Earth, Planets and Space, 70(1), doi:10.1186/s40623-018-0800-1, (2018/03). 2018

Matsuoka, A., Y. Kasaba, T. Nakagawa, Y. Miyoshi, Y. Kasahara, M. Nose, M. Shinohara, Y. Tanaka, M. Shoji, K. Ishisaka, I. Shinohara, Mariko Teramoto, R. Nomura, S. Matsuda, and A. Fujimoto, “Magnetic field disturbances observed by Arase (ERG) associated with the magnetic dipolarization”, 42nd COSPAR Scientific Assembly, 42, pp.D3.6-4-18, (July 01, 2018). 2018

Imajo, S., M. Nosé, A. Matsuoka, S. Kasahara, S. Yokota, M. Teramoto, K. Keika, T. Motoba, B. Anderson, R. Nomura, A. Fujimoto, I. Shinohara, and Y. Miyoshi, “Magnetosphere‐Ionosphere Connection of Storm‐Time Region‐2 Field‐Aligned Current and Ring Current: Arase and AMPERE Observations”, Journal of Geophysical Research: Space Physics, 123(11), pp.9545-9559, doi:10.1029/2018ja025865, (2018/11). 2018

Ikeda, A., T. Uozumi, A. Yoshikawa, A. Fujimoto, and S. Abe, “Schumann resonance parameters at Kuju station during solar flares”, E3S Web of Conferences, 62, doi:10.1051/e3sconf/20186201012, (2018/11). 2018

Yoshikawa, A., A. Fujimoto, A. Ikeda, T. Uozumi, and S. Abe, “Monitoring of Space and Earth electromagnetic environment by MAGDAS project: Collaboration with IKIR - Introduction to ICSWSE/MAGDAS project”, E3S Web of Conferences, 20, doi:10.1051/e3sconf/20172001013, (2017). 2017

Ikeda, A., T. Uozumi, A. Yoshikawa, A. Fujimoto, S. Abe, H. Nozawa, and M. Shinohara, “Characteristics of Schumann Resonance Parameters at Kuju Station”, E3S Web of Conferences, 20, doi:10.1051/e3sconf/20172001004, (2017). 2017

Fujimoto, A., T. Uozumi, S. Abe, H. Matsushita, S. Imajo, J. K. Ishitsuka, and A. Yoshikawa, “Long-term EEJ variations by using the improved EE-index”, Sun and Geosphere, 11(1), pp.37-47, (2016/03). 2016

Bolaji, O. S., E. O. Oyeyemi, O. P. Owolabi, Y. Yamazaki, A. B. Rabiu, D. Okoh, A. Fujimoto, C. Amory-Mazaudier, G. K. Seemala, A. Yoshikawa, and O. K. Onanuga, “Solar quiet current response in the African sector due to a 2009 sudden stratospheric warming event”, Journal of Geophysical Research: Space Physics, 121(8), pp.8055-8065, doi:10.1002/2016ja022857, (2016/08). 2016

Matsuoka, A., M. Shinohara, Y. M. Tanaka, A. Fujimoto, and K. Iguchi, “Development of fluxgate magnetometers and applications to the space science missions”, An Introduction to Space Instrumentation, pp.217-225, doi:10.5047/aisi.021. 2013

Fujimoto, A., Y. Miyoshi, and A. Matsuoka, “Science Output from Pc 5 Pulsation Study by the ERG Spacecraft”, Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 10(ists28), pp.Tr_11-Tr_15, doi:10.2322/tastj.10.Tr_11. 2012

Miyoshi, Y., T. Ono, T. Takashima, K. Asamura, M. Hirahara, Y. Kasaba, A. Matsuoka, H. Kojima, K. Shiokawa, K. Seki, M. Fujimoto, T. Nagatsuma, C. Z. Cheng, Y. Kazama, S. Kasahara, T. Mitani, H. Matsumoto, N. Higashio, A. Kumamoto, S. Yagitani, Y. Kasahara, K. Ishisaka, L. Blomberg, A. Fujimoto, Y. Katoh, Y. Ebihara, Y. Omura, M. Nose, T. Hori, Y. Miyashita, Y. M. Tanaka, T. Segawa, and E. W. Grp, “The Energization and Radiation in Geospace (ERG) Project”, Dynamics of the Earth's Radiation Belts and Inner Magnetosphere, 199, pp.103-116, doi:10.1029/2012gm001304. 2012

El Hawary, R., K. Yumoto, Y. Yamazaki, A. Mahrous, E. Ghamry, A. Meloni, K. Badi, G. Kianji, C. B. S. Uiso, N. Mwiinga, L. Joao, T. Affluo, P. R. Sutcliffe, G. Mengistu, P. Baki, S. Abe, A. Ikeda, A. Fujimoto, and T. Tokunaga, “Annual and semi-annual S q variations at 96° MM MAGDAS I and II stations in Africa”, Earth, Planets and Space, 64(6), pp.425-432, doi:10.5047/eps.2011.10.013. 2012

Tokunaga, T., D. Ikeda, K. Nakamura, T. Higuchi, A. Yoshikawa, T. Uozumi, A. Fujimoto, A. Morioka, K. Yumoto, and the CPMN Group, “変化点検出を応用した時系列データからの突発現象の前兆検出アルゴリズム”, 情報処理学会論文誌　数理モデル化と応用, 4(No.3), pp.14-34. 2011

Tokunaga, T., D. Ikeda, K. Nakamura, T. Higuchi, A. Yoshikawa, T. Uozumi, A. Fujimoto, A. Morioka, and K. Yumoto, “Onset time determination of precursory events in time series data by an extension of Singular Spectrum Transformation”, International Journal of Circuits, Systems and Signal Processing, 5(1), pp.46-60. 2011

Takla, E. M., K. Yumoto, M. G. Cardinal, S. Abe, A. Fujimoto, A. Ikeda, T. Tokunaga, Y. Yamazaki, A. Mahrous, E. Ghamry, G. Mengistu, T. Afullo, A. Macamo, L. Joao, H. Mweene, N. Mwiinga, C. Uiso, and P. Baki, “A study of latitudinal dependence of Pc 3-4 amplitudes at 96º magnetic meridian stations in Africa”, Sun and Geosphere, 6(2), pp.67-72. 2011

Maeda, G., K. Yumoto, Y. Kakinami, T. Tokunaga, A. Fujimoto, A. Ikeda, Y. Yamazaki, S. Abe, M. Sakai, N. Eto, H. Terada, M. Shinohara, Y. Fujita, and K. Matsuyama, “Deployment of MAGDAS in Africa”, Sun and Geosphere, 6(2), pp.58-62. 2011

Tokunaga, T., D. Ikeda, K. Nakamura, T. Higuchi, A. Yoshikawa, T. Uozumi, A. Fujimoto, A. Morioka, K. Yumoto, and the CPMN Group, “変化点検出を応用した時系列データからの突発現象の前兆検出アルゴリズム”, 情報処理学会研究報告(IPSJ SIG Technical Report), 2010-MPS-81(No.14), pp.1-6, (2010-12-09). 2010

Fujimoto, A., T. Ueno, and K. Yumoto, “A Science Mission for QSAT Project: Study of FACs in the Polar and Equatorial Regions”, Earth, Moon, and Planets, 104(1-4), pp.181-187, doi:10.1007/s11038-008-9291-6. 2009

Tsuruda, Y., A. Fujimoto, N. Kurahara, T. Hanada, K. Yumoto, and M. Cho, “QSAT: The Satellite for Polar Plasma Observation”, Earth, Moon, and Planets, 104(1-4), pp.349-360, doi:10.1007/s11038-008-9281-8. 2009

Fujimoto, A., O. E. Joshua, S. Abe, and K. Yumoto, “Characteristic of Equatorial Pc5 at ILE-IFE”, Series D, Earth and planetary sciences, XXXII(1), pp.25-30. 2008

Ueno, T., A. Fujimoto, and K. Yumoto, “Measurement of QSAT Residual Magnetism”, Series D, Earth and planetary sciences, XXXII(1), pp.7-23. 2008