Study of latitudinal coupling of upper atmospheric variations based on multi-point ground network observations

2023 Fiscal Year Annual Research Report

• Project/Area Number: 21H04518
• Research Institution: Nagoya University
• Principal Investigator: 塩川 和夫 名古屋大学, 宇宙地球環境研究所, 教授 (80226092)
• Co-Investigator(Kenkyū-buntansha): 西谷 望 名古屋大学, 宇宙地球環境研究所, 准教授 (10218159) ; 大山 伸一郎 名古屋大学, 宇宙地球環境研究所, 講師 (20444424) ; 横山 竜宏 京都大学, 生存圏研究所, 准教授 (30397525) ; 大塚 雄一 名古屋大学, 宇宙地球環境研究所, 准教授 (40314025) ; 藤本 晶子 九州工業大学, 大学院情報工学研究院, 准教授 (40578803) ; 野澤 悟徳 名古屋大学, 宇宙地球環境研究所, 准教授 (60212130) ; 吉川 顕正 九州大学, 理学研究院, 教授 (70284479) ; 能勢 正仁 名古屋市立大学, データサイエンス学部, 教授 (90333559)
• Project Period (FY): 2021-04-05 – 2026-03-31
• Keywords: 超高層大気 / 緯度間結合 / 夜間大気光 / 電離圏 / 地上ネットワーク観測 / 宇宙科学 / 地球科学 / オーロラ

Outline of Annual Research Achievements

・名古屋大学で受光部を交換修理して感度校正した高感度全天カメラ1式について、令和5年9月にドイツ南部のZugspitze観測点へ設置して自動定常観測を開始した。エチオピアは引き続き現地の内戦のために大学が入構禁止になっており設置ができていない。ZWO社の小型CMOSカメラ３台について、エジプトのアレキサンドリアにあるE-JUST大学で試験観測を行い、大気重力波の観測ができることを確認した。引き続き自動定常観測のためのシステム構築を現地で行っている。
・既存のカナダ、北欧、アイスランド、アラスカ、日本、インドネシア、タイ、オーストラリア、ナイジェリアなどの観測点における光学・電磁場計測器による観測、北海道陸別のSuperDARNレーダー、ノルウェーのナトリウムライダーの計測を維持・継続した。これらの観測データとGNSS衛星電波受信器網のデータのデータベース化を行った。
・これらの観測から、オーストラリアのダーウィンと鹿児島県の佐多岬での中間圏大気重力波や中規模伝搬性電離圏擾乱（MSTID）の10年以上の長期変動の特性を明らかにした。また、フィンランドの観測から、高緯度MSTIDには明確な低緯度側境界があることを見出し、中緯度MSTIDとの違いを明らかにした。さらにサブオーロラ帯の高エネルギー粒子降込みによる銀河電波吸収が、磁気嵐中のサブストームで経度方向に拡がる様子を明らかにするなど、数多くの研究成果が得られている。これらの研究成果は、国内外の学会・研究会で紹介され、論文として公表された。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

ウクライナ危機や現地の事情により、一部の観測が実施できていないが、既存のカナダ、北欧、アイスランド、アラスカ、日本、インドネシア、タイ、オーストラリア、ナイジェリアなどの観測点における光学・電磁場計測器による観測、北海道陸別のSuperDARNレーダーなどの計測を維持・継続できている。また、ノルウェーのナトリウムライダーも引き続き令和5年度も観測を継続している。これらの観測データとGNSS衛星電波受信器網のデータのデータベース化を行った。また、また、小型カメラを開発し、上記のようにいくつかの海外観測点に送付を開始できている。さらにこれらの地上観測データをあらせ衛星などの衛星データやモデリングと比較した解析を実施し、得られた成果を国内外の学会・研究会や論文で紹介・発表している。

Strategy for Future Research Activity

令和6年度には、小型カメラを中心とした自動定常観測を新たにエチオピアやエジプトで立ち上げていく。また、既存のカナダ、北欧、アイスランド、アラスカ、日本、インドネシア、タイ、オーストラリア、ナイジェリアなどの観測点における光学・電磁場計測器による観測、北海道陸別のSuperDARNレーダー、ノルウェーのナトリウムライダー等の地上観測を維持・継続する。前年度に引き続き、これらの新しい観測データや、GNSS衛星電波受信器網のデータのデータベース化を行う。さらに、これらの地上観測データをあらせ衛星などの衛星データやモデリングと比較した解析を実施し、研究成果を上げていく。得られた成果は国内外の学会・研究会や国際誌に論文として紹介・発表し、さらに共同研究を発展させる。

Research Products

• [Int'l Joint Research] EISCAT科学協会/オスロ大学/UiT ノルウェー北極大学(ノルウェー)
  • Country Name: NORWAY
  • Counterpart Institution: EISCAT科学協会/オスロ大学/UiT ノルウェー北極大学
• [Int'l Joint Research] 国立研究革新庁(BRIN)(インドネシア)
  • Country Name: INDONESIA
  • Counterpart Institution: 国立研究革新庁(BRIN)
• [Int'l Joint Research] ドイツ航空宇宙センター (DLR)(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: ドイツ航空宇宙センター (DLR)
• [Int'l Joint Research] バヒルダール大学(エチオピア)
  • Country Name: ETHIOPIA
  • Counterpart Institution: バヒルダール大学
• [Int'l Joint Research] 国立宇宙研究開発機関(NASRDA)(ナイジェリア)
  • Country Name: NIGERIA
  • Counterpart Institution: 国立宇宙研究開発機関(NASRDA)
• [Int'l Joint Research]
  • # of Other Countries: 10
• [Journal Article] Thermospheric wind response to March 2023 storm: Largest wind ever observed with a Fabry-Perot interferometer in Tromsoe, Norway since 2009. (2024)
  • Author(s): Oyama, S., H. Vanhamaki, L. Cai, A. Shinbori, K. Hosokawa, T. Sakanoi, K. Shiokawa, A. Aikio, I. I. Virtanen, Y. Ogawa, Y. Miyoshi, and S. Kurita
  • Journal Title: Space Weather Volume: 22 Pages: -
  • DOI: 10.1029/2023SW003728
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Statistical analysis of low-latitude boundary of polar-type medium-scale travelling ionospheric disturbances observed by a 630-nm airglow imager at Nyrola, Finland (2024)
  • Author(s): Sato, M., K. Shiokawa, S. Oyama, Y. Otsuka, A. Shinbori, and A. Oksanen
  • Journal Title: Journal of Geophysical Research Volume: 129 Pages: -
  • DOI: 10.1029/2023JA032077
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Westward Excursion of Pc1/EMIC Waves and Their Source Protons: Paradoxical Observations from Ground and Space (2024)
  • Author(s): Yin, Z., X. Zhou, Z. Hu, C. Yue, Q. Zong, Z. Liu, J. Liu, K. Shiokawa, S. Oyama and D. Baishev
  • Journal Title: Journal of Geophysical Research Volume: 129 Pages: -
  • DOI: 10.1029/2023JA032317
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Post-midnight purple arc and patches appeared on the high latitude part of the auroral oval: Dawnside counterpart of STEVE? (2024)
  • Author(s): Nanjo, N., G. A. Hofstra, K. Shiokawa, A. Shinbori, S. Nozawa, and K. Hosokawa
  • Journal Title: Earth Planets and Space Volume: 76 Pages: -
  • DOI: 10.1186/s40623-024-01995-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Field-aligned currents associated with pulsating auroral patches: Observation with Magneto-Impedance Magnetometer (MIM) onboard Loss through Auroral Microburst Pulsations (LAMP) sounding rocket (2024)
  • Author(s): Nose, M., K. Hosokawa, R. Nomura, M. Teramoto, K. Asamura, Y. Miyoshi, T. Mitani, T. Sakanoi, T. Namekawa, T. Kawano, Y. Iwanaga, S. Tatematsu, M. Hirahara, A. Halford, M. Shumko, M. R. Lessard, K. Lynch, N. Paschalidis, A. N. Jaynes, and M. G. McHarg
  • Journal Title: ツ?Journal of Geophysical Research Volume: 129 Pages: -
  • DOI: 10.1029/2023JA032232
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Direct evidence of drift-compressional wave generation in the Earth's magnetosphere detected by Arase (2024)
  • Author(s): Yamamoto, K. A. V. Rubtsov, D. V. Kostarev, P. N. Mager, D. Y. Klimushkin, M. Nose, A. Matsuoka, K. Asamura, Y. Miyoshi, S. Yokota, S. Kasahara, T. Hori, K. Keika, Y. Kasahara, A. Kumamoto, F. Tsuchiya, M. Shoji, S. Nakamura, and I. Shinohara
  • Journal Title: Geophysical Research Letters Volume: 51 Pages: -
  • DOI: 10.1029/2023GL107707
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] New observational projects in New Zealand for studying radiation belt loss processes in the deep inner magnetosphere: instrumentation, operation by solar power and initial results (2024)
  • Author(s): Obana, Y., K. Sakaguchi, M. Nose, K. Hosokawa, P. Jaquiery, S. Saita, K. Shiokawa, M. Connors, A. Kadokura, T. Nagatsuma, and Tanja Petersen
  • Journal Title: Earth, Planets and Space Volume: 76 Pages: -
  • DOI: 10.1186/s40623-024-01990-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 磁気インピーダンスセンサを用いた廉価な磁力計の開発:関東-東北-北海道への稠密磁場観測ネットワークの展開 (2024)
  • Author(s): 前田大輝，能勢正仁，野村太志，足立匠，山本優佳，熊本篤志，石田祐宣，市原寛，河野剛健，岩永吉広，立松峻一，浅利晴紀，平原秀行，海東恵美，長町信吾，渡邊修一，山内大輔
  • Journal Title: 宇宙科学情報解析論文誌 Volume: 13 Pages: 71-83
  • DOI: 10.20637/0002000302
  • Peer Reviewed / Open Access
• [Journal Article] Investigation of the Occurrence Characteristics and Possible Origins of Daytime Spread F Irregularities in Low Latitude Region (2024)
  • Author(s): Wei, L., C. Jiang, T. Yokoyama, J. Liu, G. Yang, and Y. Hu
  • Journal Title: J. Geophys. Res. Space Physics Volume: 129 Pages: -
  • DOI: 10.1029/2023JA031809
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A penalized motion detection model for extracting ionospheric echoes from low signal-to-noise ratio Ionogram video images (2024)
  • Author(s): Hiroshige, Y., Fujimoto, A., Ikeda, A., Abe, S., Yoshikawa, A.
  • Journal Title: Proceedings of International Conference on Artificial Life and Robotics Volume: - Pages: 1025-1031
  • Peer Reviewed
• [Journal Article] Performance of the double-thin-shell approach for studying nighttime medium-scale traveling ionospheric disturbances using two dense GNSS observation networks in Japan (2024)
  • Author(s): Weizheng Fu, Yuichi Otsuka, Atsuki Shinbori, Michi Nishioka and Septi Perwitasari
  • Journal Title: Earth, Planets and Space Volume: 76 Pages: -
  • DOI: 10.1186/s40623-023-01956-8
  • Peer Reviewed / Open Access
• [Journal Article] Geomagnetic activity dependence and dawn- dusk asymmetry of thermospheric winds from 9-year measurements with a Fabry-Perot interferometer in Tromsoe, Norway (2023)
  • Author(s): Oyama, S., A. Aikio, T. Sakanoi, K. Hosokawa, H. Vanhamaki, L. Cai, I. Virtanen, M. Pedersen, K. Shiokawa, A. Shinbori, N. Nishitani, and Y. Ogawa
  • Journal Title: Earth Planets Space Volume: 75 Pages: -
  • DOI: 10.1186/s40623-023-01829-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] IMF dependence of midnight bifurcation in the thermospheric wind at an auroral latitude based on nine winter measurements in Tromsoe, Norway (2023)
  • Author(s): Oyama, S., K. Hosokawa, H. Vanhamaki, A. Aikio, T. Sakanoi, L. Cai, I. I. Virtanen, K. Shiokawa, N. Nishitani, A. Shinbori, and Y. Ogawa
  • Journal Title: Geophysical Research Letters Volume: 50 Pages: -
  • DOI: 10.1029/2023GL104334
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Statistical Analysis of the Horizontal Phase Velocity Distribution of Atmospheric Gravity Waves and Medium-Scale Traveling Ionospheric Disturbances in Airglow Images over Darwin (12.4oS, 131.0oE) (2023)
  • Author(s): Tsuboi, T., K. Shiokawa, Y. Otsuka, H. Fujinami, T. Nakamura, and D. Neudegg
  • Journal Title: Journal of Geophysical Research Volume: 128 Pages: -
  • DOI: 10.1029/2022JA030769
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] On the Creation, Depletion, and End of Life of Polar Cap Patches (2023)
  • Author(s): Eriksen, N. K., D. A. Lorentzen, K. Oksavik, L. Baddeley, K. Hosokawa, K. Shiokawa, E. Bland, L. Paxton, Y. Zhang, K. McWilliams, T. Yeoman, and D. R. Themens
  • Journal Title: Journal of Geophysical Research Volume: 128 Pages: -
  • DOI: 10.1029/2023JA031739
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Statistical Analysis of the Horizontal Phase Velocity Distribution of Atmospheric Gravity Waves and Medium-Scale Traveling Ionospheric Disturbances in Airglow Images over Sata (31.0oN, 130.7oE) (2023)
  • Author(s): Tsuboi, T., K. Shiokawa, Y. Otsuka, H. Fujinami, and T. Nakamura
  • Journal Title: Journal of Geophysical Research Volume: 128 Pages: -
  • DOI: 10.1029/2023JA031600
  • Peer Reviewed / Open Access
• [Journal Article] Longitudinal development of cosmic noise absorption based on multipoint observations at subauroral latitudes during storm-time substorms on August 25-28, 2018 (2023)
  • Author(s): Kato, Y., K. Shiokawa, Y. Tanaka, M. Ozaki, A. Kadokura, S. Oyama, A. Oinats, M. Connors, and D. G. Baishev
  • Journal Title: Journal of Geophysical Research Volume: 128 Pages: -
  • DOI: 10.1029/2023JA031950
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multi-event conjugate measurements of the SAR arc detachment from the auroral oval using DMSP satellites and an all-sky camera at Athabasca, Canada (2023)
  • Author(s): Gololobov, A., K. Shiokawa, D. Baishev, Y. Inaba, Y. Otsuka and M. Connors
  • Journal Title: Journal of Geophysical Research Volume: 128 Pages: -
  • DOI: 10.1029/2022JA030544
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Modeling of Multi-Ion Plasma Bubbles in the Equatorial Ionosphere (2023)
  • Author(s): Jiang, C., L. Wei, T. Yokoyama, R. Tian, T. Liu, and G. Yang
  • Journal Title: J. Geophys. Res. Space Physics Volume: 128 Pages: -
  • DOI: 10.1029/2023JA031753
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A three-dimensional stochastic structure model derived from high-resolution isolated equatorial plasma bubble simulations (2023)
  • Author(s): Rino, C., T. Yokoyama, and C. Carrano
  • Journal Title: Earth, Planets and Space Volume: 75 Pages: -
  • DOI: 10.1186/s40623-023-01823-6
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Nighttime Midlatitude E-F Coupling in Geomagnetic Conjugate Ionospheres: A Double Thin Shell Model and a Multi-Source Data Investigation (2023)
  • Author(s): Fu, W., T. Yokoyama, N. Ssessanga, G, Ma, and M. Yamamoto
  • Journal Title: J. Geophys. Res. Space Physics Volume: 123 Pages: -
  • DOI: 10.1029/2022JA031074
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Radiation Analysis of LEO Mission in the South Atlantic Anomaly During Geomagnetic Storm (2023)
  • Author(s): K. M. Girgis, T. Hada, S. Matsukiyo and A. Yoshikawa
  • Journal Title: IEEE Journal of Radio Frequency Identification Volume: 6 Pages: -
  • DOI: 10.1109/JRFID.2022.3163441
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Geomagnetic storm effects on the LEO proton flux during solar energetic particle events (2023)
  • Author(s): Girgis, K. M., Hada, T., Yoshikawa, A., Matsukiyo, S., Pierrard, V., and Samwel, S. W.
  • Journal Title: Space Weather Volume: 21 Pages: -
  • DOI: 10.1029/2023SW003664
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Automatic detection of auroral Pc5 geomagnetic pulsation using machine learning approach guided with discrete wavelet transform (2023)
  • Author(s): Stephen Omondi, Akimasa Yoshikawa, Waheed K. Zahra, Ibrahim Fathy, Ayman Mahrous
  • Journal Title: Advances in Space Research Volume: 72 Pages: -
  • DOI: 10.1016/j.asr.2022.06.063
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Simulation of dawn-to-dusk electric field in the Jovian inner magnetosphere via Region 2-like field-aligned current (2023)
  • Author(s): Nakamura, Y., Terada, K., Tao, C. Terada, N., Kasaba, Y., Leblanc, F., Yoshikawa, A., et al.
  • Journal Title: Journal of Geophysical Research Volume: 128 Pages: -
  • DOI: 10.1029/2022JA031248
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Examining Solar Flare Effects on Earth's Ionosphere using Ground-Based Measurements (2023)
  • Author(s): Hamid, N.S.A., Halim, R.A.R., Sarudin, I., Yoshikawa, A., Fujimoto, A.
  • Journal Title: Sains Malaysiana Volume: 52(8) Pages: 2309-2322
  • DOI: 10.17576/jsm-2023-5208-11
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Responses of the African-European equatorial-, low-, mid-, and high-latitude ionosphere to geomagnetic storms of 2013, 2015 St Patrick's Days, 1 June 2013, and 7 October 2015 (2023)
  • Author(s): Akala, A.O., Afolabi, R.O., and Otsuka, Y
  • Journal Title: Advances in Space Research Volume: 72 Pages: 775-789
  • DOI: 10.1016/j.asr.2022.10.029
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Statistical Analysis of Global and Regional Ionospheric Total Electron Content (TEC) Using Extreme Value Distributions (2023)
  • Author(s): Emmela, Suneetha and Ratnam, D. Venkata and Otsuka, Yuichi and Shinbori, Atsuki and Sori, Takuya and Nishioka, Michi and Perwitasari, Septi
  • Journal Title: IEEE Transactions on Geoscience and Remote Sensing Volume: 62 Pages: -
  • DOI: 10.1109/TGRS.2023.3338513
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Generation of equatorial plasma bubble after the 2022 Tonga volcanic eruption (2023)
  • Author(s): A. Shinbori, T. Sori, Y. Otsuka, M. Nishioka, S. Perwitasari, T. T. Tsuda, A. Kumamoto, F. Tsuchiya, S. Matsuda, Y. Kasahara, A. Matsuoka, S. Nakamura, Y. Miyoshi, I. Shinohara
  • Journal Title: Scientific Reports Volume: 13 Pages: -
  • DOI: 10.1038/s41598-023-33603-3
  • Peer Reviewed / Open Access
• [Journal Article] First detection of midlatitude plasma bubble by SuperDARN during a geomagnetic storm on May 27 and 28, 2017 (2023)
  • Author(s): Sori, T., Shinbori, A., Otsuka, Y., Nishioka, M., Perwitasari, S., & Nishitani, N.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 128 Pages: -
  • DOI: 10.1029/2022JA031157
  • Peer Reviewed / Open Access
• [Journal Article] New aspects of the upper atmospheric disturbances caused by the explosive eruption of the 2022 Hunga Tonga-Hunga Ha'apai volcano (2023)
  • Author(s): A. Shinbori, Y. Otsuka, T. Sori, M. Nishioka, S. Perwitasari, T. T. Tsuda, N. Nishitani, A. Kumamoto, F. Tsuchiya, S. Matsuda, Y. Kasahara, A. Matsuoka, S. Nakamura, Y. Miyoshi, I. Shinohara
  • Journal Title: Earth, Planets and Space Volume: 75 Pages: -
  • DOI: 10.1186/s40623-023-01930-4
  • Peer Reviewed / Open Access
• [Journal Article] Machine learning approach for ionospheric scintillation prediction on ROTI parameter over the African region during solar cycle 24 (2023)
  • Author(s): Stephen Tete, Yuichi Otsuka, Waheed K. Zahra, Ayman Mahrous
  • Journal Title: Advances in Space Research Volume: 72 Pages: -
  • DOI: 10.1016/j.asr.2023.12.026
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Equinoctial asymmetry of plasma bubble occurrence and electric field at evening: GPS and ionosonde measurements in Southeast Asia (2023)
  • Author(s): Yuichi Otsuka, Prayitno Abadi, Kornyanat Hozumi, Alif Almahi
  • Journal Title: Journal of Atmospheric and Solar-Terrestrial Physics Volume: 252 Pages: -
  • DOI: 10.1016/j.jastp.2023.106136
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Assessing the potential of ionosonde for forecasting post-sunset equatorial spread F: an observational experiment in Southeast Asia (2023)
  • Author(s): Prayitno Abadi, Umar Ali Ahmad, Yuichi Otsuka, Punyawi Jamjareegulgarn, Alif Almahi, Septi Perwitasari, Slamet Supriadi, Wendi Harjupa, Reza Rendian Septiawan
  • Journal Title: Earth, Planets and Space Volume: 75 Pages: -
  • DOI: 10.1186/s40623-023-01941-1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Day-to-day variability of the equatorial ionosphere in Asian sector during August-October 2019 (2023)
  • Author(s): Huixin Liu, Yuichi Otsuka, Kornyanat Hozumi, Tao Yu
  • Journal Title: Frontiers in Astronomy and Space Sciences, Sec. Space Physics Volume: 10 Pages: -
  • DOI: 10.3389/fspas.2023.1198739
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ionospheric disturbances over South America related to Tonga volcanic eruption (2023)
  • Author(s): Hisao Takahashi, CAOB Figueiredo, D Barros, CM Wrasse, GA Giongo, RH Honda, LFR Vital, LCA Resende, PK Nyassor, TT Ayorinde, CS Carmo, MB Padua, Y Otsuka
  • Journal Title: Earth, Planets and Space Volume: 75 Pages: -
  • DOI: 10.1186/s40623-023-01844-1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Equatorial Plasma Bubble Intensities across Longitudinal Sectors of the Globe using GNSS Observations (2023)
  • Author(s): Okoh, D., K. Shiokawa, Y. Otsuka, B. Rabiu, J. B. Habarulema. Y. Migoya-Orue, C. Cesaroni
  • Journal Title: Journal of Atmospheric and Solar-Terrestrial Physics Volume: 249 Pages: -
  • DOI: 10.1016/j.jastp.2023.106097
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Periodic oscillations of Doppler frequency excited by the traveling ionospheric disturbances associated with the Tonga eruption in 2022 (2023)
  • Author(s): Hiroyuki Nakata, Keisuke Hosokawa, Susumu Saito, Yuichi Otsuka, Ichoro Tomizawa
  • Journal Title: Earth, Planets and Space Volume: 75 Pages: -
  • DOI: 10.1186/s40623-023-01914-4
  • Peer Reviewed / Open Access
• [Presentation] EMIC wave induced proton precipitation during the 27-28 May 2017 storm: Comparison of BATSRUS+RAM-SCB simulations with ground/space based observations (2023)
  • Author(s): Shreedevi P R, Yiqun Yu, Yoshizumi Miyoshi, Xingbin Tian, Sandeep Kumar, Minghui Zhu, Satoko Nakamura, Chae-Woo Jun, et al.
  • Organizer: EGU 2023
• [Presentation] Development of Technique for Estimating Plasmaspheric Total Electron Content Variations from GPS Total Electron Content Data (2023)
  • Author(s): Yuichi Otsuka, Zhiyu Chen, Atsuki Shinbori, Takuya Sori, Kazuo Shiokawa, Septi Perwitasari, Michi Nishioka
  • Organizer: IRI workshop
  • Int'l Joint Research / Invited
• [Presentation] Recent results of the ground-based multi-point network of the PWING project and the Optical Mesosphere Thermosphere Imagers and introduction of the new PBASE program (2023)
  • Author(s): Shiokawa, K., Y. Otsuka, and the PWING Team
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research / Invited
• [Presentation] Geomagnetic activity dependence and dawn-dusk asymmetry of thermospheric winds: statistical analysis of Fabry-Perot interferometer measurements in Tromsoe, Norway (2023)
  • Author(s): Shin-ichiro Oyama, Anita Aikio, Takeshi Sakanoi, Keisuke Hosokawa, Heikki Vanhamaki, Lei Cai, Virtanen I Ilkka, Marcus N Pedersen, Kazuo Shiokawa, et al.
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Horizontal inhomogeneity in the D-region ionosphere due to X-class solar flares by OCTAVE VLF/LF observations (2023)
  • Author(s): Masaharu Nakayama, Hiroyo Ohya, Fuminori Tsuchiya, Kazuo Shiokawa, Kenro Nozaki and Hiroyuki Nakata
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Post-midnight にオーロラオーバルの極側で見られた STEVE のような発光の事例解析 (2023)
  • Author(s): 南條壮汰，Gabriel Arne Hofstra，野澤悟徳，塩川和夫，川端哲也，細川敬祐
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] 小スケール大気重力波に伴う温度・風速変動の観測的評価：水平伝搬方向の見積もり (2023)
  • Author(s): 鈴木臣、野澤悟徳，大山伸一郎，塩川和夫
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] Multi-event study of 630-nm airglow enhancement during substorms based on ground-based observations in Japan (2023)
  • Author(s): 森田早紀、塩川和夫、新堀淳樹、大塚雄一、藤本晶子、吉川顕正、西岡未知、Septi Perwitasari
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] On the EMIC wave activity in the inner magnetosphere associated with solar wind dynamic pressure variations (2023)
  • Author(s): Shreedevi P.R., Yoshizumi Miyoshi, Yiqun Yu, Xingbin Tian, Vania Jordanova, Chae-Woo Jun , Kazuo Shiokawa
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Efforts of Nagoya University on archiving and publication of university academic data (2023)
  • Author(s): Miyoshi, Nose, Otsuka, Umeda, Masuda, Hori, Shinbori, Iijima, Jun, Matsumoto, Shiokawa, Hashiba ,Naoe, Matsubara, Aoki, Takahashi, Yamada, Hayashi, Suzuki
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Arase observations of field and plasma characteristics in the source region of a storm-time auroral brightening arc (2023)
  • Author(s): Chen Liwei, 塩川 和夫, 三好 由純, 大山 伸一郎, Jun Chae-Woo, 小川 泰信, 細川 敬祐, 風間 洋一, Wang Shiang-Yu, Tam Sunny Wing-Yee et al.
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] 地上光学・電波機器とあらせ衛星・Van Allen Probes衛星の同時観測に基づくサブオーロラ帯の３種類のオーロラの複数例解析：Coulomb衝突によるHeat fluxの見積り (2023)
  • Author(s): 椙村 怜, 塩川 和夫, 大塚 雄一, 大山 伸一郎, Connors Martin, 門倉 昭, Poddelsky Alexey, Poddelsky Igor, 西谷 望, Shepherd Simon, Ruohoniemi J, Smith Charles, et al.
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] Possible roles of magnetospheric density ducts in controlling the shape of pulsating aurora and the energy of precipitating electrons (2023)
  • Author(s): Ito, Y., K. Hosokawa, Y. Ogawa, Y. Miyoshi, F. Tsuchiya, M. Fukizawa, K. Murase, S. Oyama, S. Nakamura, Y. Kasahara, S. Matsuda, S. Kasahara, T. Hori, S. Yokota, K. Keita, I. Shinohara
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] 多周波リオメータ，EMCCD全天カメラを用いたオメガバンドオーロラに伴う放射線帯電子降下の時空間構造に関する研究 (2023)
  • Author(s): 高野向陽, 細川敬祐, 大山伸一郎, A. Kero, 三好由純
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Japan's Activities for the EISCAT_3D Project (2023)
  • Author(s): Yasunobu Ogawa, Hiroshi Miyaoka, Satonori Nozawa, Taishi Hashimoto, Shin-ichiro Oyama, Koji Nishimura, Takuo T. Tsuda, Hitoshi Fujiwara, Masaki Tsutsumi, Yoshimasa Tanaka et al.
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Small-scale pulsating auroral distribution obtained with the auroral camera on the LAMP rocket (2023)
  • Author(s): Sakanoi, T., K. Asamura, Y. Miyoshi, K. Hosokawa, A. Halford, M. Lessard
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Low-energy energetic neutral atom analyzer (PEP/JNA) onboard the JUICE mission (2023)
  • Author(s): Asamura, K., M. Shimoyama, Y. Futaana, Y. Saito, Y. Miyoshi, T. Sakanoi, PEP team
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] LAMP Observation of Precipitating Electron Simultaneously Forming Microbursts and Pulsating Auroras (2023)
  • Author(s): Namekawa, T., T. Mitani, K. Asamura, Y. Miyoshi, K. Hosokawa, M. Lwssard, C. Moser, A. Halford, T. Sakanoi, M. Kawamura, M. Nose, R. Nomura, M. Teramoto, D. Hampton, M. Shumko, A. Jaynes, M. McHarg, V. Ledvina
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Field-aligned currents associated with pulsating auroral patches: Observation with Magneto-Impedance Magnetometer (MIM) onboard Loss through Auroral Microburst Pulsations (LAMP) sounding rocket (2023)
  • Author(s): Nose, M., K. Hosokawa, R. Nomura, M. Teramoto, K. Asamura, Y. Miyoshi, T. Mitani, T. Sakanoi, T. Namekawa, T. Kawano,
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Relativistic electron microburst is a high-energy tail of pulsating aurora electrons: LAMP sounding rocket experiment and computer simulation (2023)
  • Author(s): Miyoshi, Y., K. Asamura, K. Hosokawa, T. Mitani, T. Namekawa, S. Saito, T. Sakanoi, M. Nose, K. Takahashi, Y. Obayashi, M. Lessard, A. Halford, M. Shumko, N. Paschalidis, M. McHarg, A. Jaynes, D. Hampton, V. Ledvina, K. Lynch, H. Kim
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Towards a closer cooperation between space and seismology communities (2023)
  • Author(s): Pilipenko, S. and K. Shiokawa
  • Organizer: 7th International Workshop on Earthquake Process (IWEP7)
  • Int'l Joint Research
• [Presentation] Multi-event analysis of STEVE, SAR arc, and red/green arc at subauroral latitudes using ground optical and radio instruments and the Arase and Van Allen Probes satellites (2023)
  • Author(s): Rei Sugimura, Kazuo Shiokawa, Yuichi Otsuka, Shin-ichiro Oyama, Martin Connors, Akira Kadokura, Alexey Poddelsky, Igor Poddelsky, Nozomu Nishitani et al.
  • Organizer: CEDAR 2023 Workshop
  • Int'l Joint Research
• [Presentation] EMIC wave induced proton precipitation during the 27-28 May 2017 storm: Comparison of BATSRUS+RAM-SCB simulations with ground/space based observations (2023)
  • Author(s): Shreedevi P R, Yiqun Yu, Yoshizumi Miyoshi, Xingbin Tian, Sandeep Kumar, Minghui Zhu, Satoko Nakamura, Chae-Woo Jun, Masafumi Shoji et al.
  • Organizer: EGU
  • Int'l Joint Research
• [Presentation] High-energy particle precipitation associated with electromagnetic ion cyclotron waves and its consequences on the atmosphere (2023)
  • Author(s): Kazuo Shiokawa, M. Ozaki, Y. Miyoshi, and the PWING Team
  • Organizer: ICTP-SCOSTEP-ISWI Workshop on the Predictability of the Solar-Terrestrial Coupling - PRESTO
  • Int'l Joint Research
• [Presentation] Magnetosphere-ionosphere coupling (2023)
  • Author(s): Kazuo Shiokawa
  • Organizer: ICTP-SCOSTEP-ISWI Workshop on the Predictability of the Solar-Terrestrial Coupling - PRESTO
  • Int'l Joint Research / Invited
• [Presentation] Proton precipitation at sub-auroral latitudes and its association to EMIC waves: Global Modelling and Observations (2023)
  • Author(s): Shreedevi P R, Yiqun Yu, Yoshizumi Miyoshi, Xingbin Tian, Sandeep Kumar, Minghui Zhu, Satoko Nakamura, Chae-Woo Jun, Masafumi Shoji et al.
  • Organizer: IUGG General Assembly
  • Int'l Joint Research
• [Presentation] Using multipoint observations to quantify microburst precipitation caused by whistler mode chorus waves (2023)
  • Author(s): S. S. Elliott, A. W. Breneman, C. Colpitts, J. M. Pettit, C. A. Cattell, A. J. Halford, M. Shumko, J. Sample, A. T. Johnson, Y. Miyoshi, Y. Kasahara, et al.
  • Organizer: IUGG General Assembly
  • Int'l Joint Research / Invited
• [Presentation] EMIC wave induced proton precipitation during the 27-28 May 2017 storm: Comparison of BATSRUS+RAM-SCB simulations with ground/space based observations (2023)
  • Author(s): Shreedevi P R, Yiqun Yu, Yoshizumi Miyoshi, Xingbin Tian, Sandeep Kumar, Minghui Zhu, Satoko Nakamura, Chae-Woo Jun, Masafumi Shoji et al.
  • Organizer: URSI GASS
  • Int'l Joint Research
• [Presentation] Localized mesospheric ozone destruction induced by magnetospheric EMIC waves (2023)
  • Author(s): Mitsunori Ozaki, Kazuo Shiokawa, Ryuho Kataoka, Martin Mlynczak, Larry Paxton, Martin Connors, Satoshi Yagitani, Yuichi Otsuka, Satoshi Nakahira, and Ian Mann
  • Organizer: URSI GASS
  • Int'l Joint Research / Invited
• [Presentation] Study of the propagation of different VLF emissions from multi-point observations in northern Finland (2023)
  • Author(s): Claudia Martinez-Calderon, Jyrki Manninen, Kazuo Shiokawa , Mitsunori Ozaki, Ondrej Santolik and Tauno Turunen
  • Organizer: URSI GASS
  • Int'l Joint Research / Invited
• [Presentation] Horizontal Inhomogeneity of Electron Density in the D-region Ionosphere During a X-class Solar Flare Using OCTAVE VLF/LF Observations (2023)
  • Author(s): Masaharu Nakayama, Hiroyo Ohya, Fuminori Tsuchiya, Kazuo Shiokawa, Kenro Nozaki and Hiroyuki Nakata
  • Organizer: URSI GASS
  • Int'l Joint Research
• [Presentation] Plasmaspheric Total Electron Content Variations obtained from GPS Total Electron Content Data (2023)
  • Author(s): Yuichi Otsuka, Zhiyu Chen, Atsuki Shinbori, Takuya Sori, Kazuo Shiokawa, Septi Perwitasari, Michi Nishioka, Fuminori Tsuchiya et al.
  • Organizer: URSI GASS
  • Int'l Joint Research / Invited
• [Presentation] VLF bursty-patches observed at PWING stations (2023)
  • Author(s): Jyrki Manninen, Claudia Martinez-Calderon, Kazuo Shiokawa, and the PWING Team
  • Organizer: URSI GASS
  • Int'l Joint Research
• [Presentation] Maps of foF2 and hmF2 obtained from a high-latitude all-sky airglow imager (2023)
  • Author(s): Michael Negale, Vince Eccles, Jeffrey Holmes, and Kazuo Shiokawa
  • Organizer: URSI GASS
  • Int'l Joint Research
• [Presentation] Ring-shaped expanding pulsating aurora: simultaneous observations with Arase (2023)
  • Author(s): Hosokawa, K., S. Kurita, Y. Miyoshi, S.-I. Oyama, Y. Ogawa, M. Ozaki, Y. Kasahara, Y. Kasaba, S. Yagitani, S. Matsuda, F. Tsuchiya, A. Kumamoto, I. Shinohara and R. Fujii
  • Organizer: URSI GASS
  • Int'l Joint Research
• [Presentation] Factors controlling the shape and energy of pulsating aurora: Simultaneous observations by Arase satellite, ground-based all-sky imagers and EISCAT radar (2023)
  • Author(s): Ito, Y., K. Hosokawa, Y. Ogawa, Y. Miyoshi, M. Fukizawa, F. Tsuchiya, K. Murase, S.-I. Oyama, S. Nakamura, Y. Kasahara, S. Matsuda, S. Kasahara, T. Hori, S. Yokota, K. Keika, I. Shinohara
  • Organizer: URSI GASS
  • Int'l Joint Research
• [Presentation] ノルウェー・トロムソーのファブリ・ペロー干渉計で2023年3月24日に観測された427.8nm窒素分子イオンオーロラを通したイオンアップフローの分光計測 (2023)
  • Author(s): 菊池大希、塩川和夫、大山伸一郎、小川泰信、栗原純一
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] タイトル：630-nm大気光増光の３地点同時観測に基づくサブストームに伴う中緯度への電場侵入の複数例解析 (2023)
  • Author(s): 森田早紀、塩川和夫、大塚雄一、西谷望、新堀淳樹、惣宇利卓也、藤本晶子、吉川顕正、西岡未知、Septi Perwitasari、山本衛
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] IMF dependence of midnight bifurcation of the thermospheric wind based on nine winter measurements in Tromsoe, Norway (2023)
  • Author(s): S. Oyama, K. Hosokawa, H. Vanhamaki, A. Aikio, T. Sakanoi, L. Cai, I. I. Virtanen, K. Shiokawa, N. Nishitani, A. Shinbori, and Y. Ogawa
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] Statistical study of the overlap region between plasmasphere and ring-current ions using the Van Allen Probes satellites (2023)
  • Author(s): Rei Sugimura, Kazuo Shiokawa, Charles Smith, Robert MacDowall, Harlan Spence, Geoff Reeves, Herbert O. Funsten
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] 大型研究プロジェクト「太陽地球系結合過程の研究基盤形成」 (2023)
  • Author(s): 山本 衛, 小川 泰信, 塩川 和夫, 吉川 顕正, 岩井 一正
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] 脈動オーロラの空間構造と降下電子エネルギーの制御に関するコーラス波ダクト伝搬の役割 (2023)
  • Author(s): 伊藤ゆり，細川敬祐，小川泰信，三好由純，土屋史紀，吹澤瑞貴，村瀬清華，大山伸一郎，中村紗都子，笠原禎也，松田昇也，笠原慧，堀智昭，横田勝一郎，桂華邦裕，篠原育
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] 磁気嵐中に発生したオメガバンドオーロラに伴う放射線帯電子降下の時空間変動: 多周波リオメータ, EMCCD 全天カメラによる同時観測 (2023)
  • Author(s): 高野向陽, 細川敬祐, 大山伸一郎, Antti Kero, 三好由純, 小川泰信, 栗田怜, 南條壮汰
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] Center for Heliospheric Science : a core center to promote heliospheric system science (2023)
  • Author(s): Yoshizumi Miyoshi, Iku Shinohara, Go Murakami, Shinsuke Imada, Tomoaki Hori, Satoko Nakamura, C.-W. Jun, Atsuki Shinbori, Takuya Sori et al.
  • Organizer: Hinode-16/IRIS-13 meeting
  • Int'l Joint Research / Invited
• [Presentation] Activities of the Hinode and SOLAR-C Science Center at ISEE in Nagoya University (2023)
  • Author(s): S. Masuda, Y. Miyoshi, T. Matsumoto, T. Hori, S. Nakamura, C.-W. Jun, A. Shinbori, T. Sori, H. Iijima, K. Iwai, T. Segawa, K. Kusano, K. Shiokawa et al.
  • Organizer: Hinode-16/IRIS-13 meeting
  • Int'l Joint Research
• [Presentation] Plasma and Field Variations in the Source Region of Substorm Auroral Brightening in the Inner Magnetosphere: Arase observations for three conjugate Events (2023)
  • Author(s): L. Chen, K. Shiokawa, Y. Miyoshi, S. Oyama, C-W. Jun, Y. Ogawa, K. Hosokawa, Y. Kazama, S. Y. Wang, S. W. Y. Tam, T. F. Chang, B. J. Wang et al.
  • Organizer: 15th International Conference on Substorms
  • Int'l Joint Research
• [Presentation] Substorm onset: An east-west aligned instability from spreading of flow channels driven by meso-scale polar cap flows (2023)
  • Author(s): Larry R. Lyons, Yukitoshi Nishimura, Jiang Liu, Ying Zou, William A. Bristow, Sneha Yadav, Eric Donovan, Nozomu Nishitani, Kazuo Shiokawa, Keisuke Hosokawa
  • Organizer: 15th International Conference on Substorms
  • Int'l Joint Research
• [Presentation] Latitudinal propagation of VLF emissions from multi-point observations in Finland: First results from the Oulujarvi ground station (2023)
  • Author(s): C. Martinez-Calderon, J. Manninen, K. Shiokawa, M. Ozaki, V. Vuolteenaho, and David Pisa
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] EMIC wave activity in the inner magnetosphere associated with solar wind dynamic pressure variations: Global modeling and observations (2023)
  • Author(s): Shreedevi P.R., Yoshizumi Miyoshi, Yiqun Yu, Vania Jordanova, Xingbin Tian, Chae-Woo Jun, Kazuo Shiokawa, Masafumi Shoji, Satoko Nakamura
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] Mesoscale polar cap flow channels: Initial evaluation of long duration Propagation and effects on space weather disturbances (2023)
  • Author(s): Larry R. Lyons, Yukitoshi Nishimura, Jiang Liu, Ying Zou, William A. Bristow, Sneha Yadav, Eric Donovan, Nozomu Nishitani, Kazuo Shiokawa, Keisuke Hosokawa
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] Statistical study of magnetospheric states for the overlap region between plasmasphere and ring-current ions using the Van Allen Probes satellites (2023)
  • Author(s): Rei Sugimura, Kazuo Shiokawa, Charles Smith, Robert MacDowall, Harlan Spence, Geoff Reeves, Herbert O. Funsten
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] IMF dependence of the midnight thermospheric wind at an auroral latitude based on 9 winter measurements in Tromsoe, Norway (2023)
  • Author(s): S. Oyama, K. Hosokawa, H. Vanhamaki, A. Aikio, T. Sakanoi, L. Cai, I. I. Virtanen, K. Shiokawa, N. Nishitani, A. Shinbori, and Y. Ogawa
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] First observation of temporal variation of STEVE heights by triangulation using two all-sky cameras at Athabasca, Canada (2023)
  • Author(s): L. Chen, K. Shiokawa, Y. Kato, T. Tsuboi, and M. Connors
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] Utilizing maps of foF2 and hmF2 obtained from a high-latitude all-sky airglow imager in a data assimilative model (2023)
  • Author(s): Michael Negale, Vince Eccles, Jeffrey Holmes, Keisuke Hosokawa, and Kazuo Shiokawa
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] Possible Influence of Ducted Chorus Wave Propagation on the Characteristics of the Pulsating Auroral Shape and the Energy of Electron Precipitation (2023)
  • Author(s): Ito, Y., K. Hosokawa, Y. Ogawa, Y. Miyoshi, F. Tsuchiya, M. Fukizawa, K. Murase, S. Oyama, S. Nakamura, Y. Kasahara, S. Matsuda, Y. Kasaba, S. Kasahara, T. Hori, S. Yokota, K. Keika, A. Matsuoka, M. Teramoto, I. Shinohara
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] A Review of Ionospheric Plasma: Measurements and Disturbances (2023)
  • Author(s): Kazuo Shiokawa
  • Organizer: INTERNATIONAL COLLOQUIUM ON EQUATORIAL AND LOW LATITUDE IONOSPHERE
  • Int'l Joint Research / Invited
• [Presentation] Ionosphereic Plasma (2023)
  • Author(s): Kazuo Shiokawa
  • Organizer: 3rd Iberian Space Science Summer School
  • Int'l Joint Research / Invited
• [Presentation] Localized mesospheric ozone destruction below isolated proton aurora at subauroral latitudes (2023)
  • Author(s): Mitsunori Ozaki, Kazuo Shiokawa, Ryuho Kataoka, Martin Mlynczak, Larry Paxton, Martin Connors, Satoshi Yagitani, Yuichi Otsuka, Satoshi Nakahira, and Ian Mann
  • Organizer: 14th Symposium on Polar Science
  • Int'l Joint Research
• [Presentation] IMF dependence of the midnight thermospheric wind at an auroral latitude based on 9 winter measurements in Tromsoe, Norway (2023)
  • Author(s): S. Oyama, K. Hosokawa, H. Vanhamaki, A. Aikio, T. Sakanoi, L. Cai, I. I. Virtanen, K. Shiokawa, N. Nishitani, A. Shinbori, and Y. Ogawa
  • Organizer: 14th Symposium on Polar Science
  • Int'l Joint Research
• [Presentation] Pc1 pulsations simultaneously observed at low- to high-latitude stations and by the Swarm satellites during the March 2023 storm, (2023)
  • Author(s): 能勢正仁, 塩川和夫, Liejun Wang, and Bill Jones
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] Application of magneto-impedance (MI) sensor to geomagnetic field measurements for magnetoseismology (2023)
  • Author(s): Nose, M., T. Maeda, H. Nomura, T. Adachi, Y. Yamamoto, A. Kumamoto, S. Ishida, T. Kawano, Y. Iwanaga, and S. Tatematsu
  • Organizer: IUGG General Assembly
  • Int'l Joint Research
• [Presentation] Field-aligned currents associated with pulsating auroral patches: Observation with Magneto-Impedance Magnetometer (MIM) onboard Loss through Auroral Microburst Pulsations (LAMP) sounding rocket (2023)
  • Author(s): Nose, M., K. Hosokawa, R. Nomura, M. Teramoto, K. Asamura, Y. Miyoshi, T. Mitani, T. Sakanoi, T. Namekawa, T. Kawano, Y. Iwanaga, S. Tatematsu, M. Hirahara, A. Halford, M. Shumko, M. R. Lessard, K. Lynch, N. Paschalidis, A. N. Jaynes, and M. G. McHarg
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Incoherent Scatter Observations by the MU Radar over Japan: Potential Contribution to the IRI Model (2023)
  • Author(s): Yokoyama, T., M. Yamamoto, and Y. Otsuka
  • Organizer: URSI GASS
  • Int'l Joint Research / Invited
• [Presentation] Multi-Scale Simulation of Equatorial Plasma Bubbles with GAIA Model (2023)
  • Author(s): Yokoyama, T., H. Jin, and H. Shinagawa
  • Organizer: URSI GASS
  • Int'l Joint Research / Invited
• [Presentation] Solar and Geomagnetic Activity Dependence of 150-km Echoes Observed by the Equatorial Atmosphere Radar in Indonesia (2023)
  • Author(s): Yokoyama, T., R. Takagi, and M. Yamamoto
  • Organizer: AOGS 20th Annual Meeting
  • Int'l Joint Research / Invited
• [Presentation] Automatic scaling of foF2 and foEs from ionograms obtained at Shigaraki MU Observatory (2023)
  • Author(s): Yokoyama, T., Y. Uneyama, P. Liu, and M. Yamamoto
  • Organizer: AOGS 20th Annual Meeting
  • Int'l Joint Research / Invited
• [Presentation] Spatiotemporal Sequence Prediction of Global Ionospheric Total Electron Content Map Based on Deep Learning Recurrent Neural Network (2023)
  • Author(s): Liu, P., T. Yokoyama, and M. Yamamoto
  • Organizer: URSI GASS
  • Int'l Joint Research
• [Presentation] 信楽イオノゾンデ観測を用いた機械学習によるスポラディックE層の自動検出と統計解析 (2023)
  • Author(s): 横山 竜宏, 采山 裕紀, 劉 鵬, 山本 衛
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] 深層学習再帰型ニューラルネットワークを用いた地球電離圏全電子数マップの時空間系列予測 (2023)
  • Author(s): 劉 鵬, 横山 竜宏, 山本 衛
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] Study of Nighttime Mid-latitude E-F Coupling in Geomagnetic Conjugate Regions Using a Double-thin-shell Model and Multi-source Data (2023)
  • Author(s): Weizheng Fu, 横山 竜宏, Nicholas Ssessanga, 馬 冠一, 山本 衛
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] The Occurrence Characteristics of Daytime Spread F in the Low Latitude Regions During 2013-2020 Observed by Puer Ionosonde (2023)
  • Author(s): Lehui Wei, Chunhua Jiang, and Tatsuhiro Yokoyama
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] Three-dimensional Simulation of Equatorial Spread F: Effects of Field-aligned Plasma Flow and Ionospheric Conductivity (2023)
  • Author(s): Zezhong Li, Jiuhou Lei, Binzheng Zhang, and Tatsuhiro Yokoyama
  • Organizer: Japan Geoscience Union Meeting 2023
• [Presentation] Latest activities of i-SPES & Kyutech FM-CW project (2023)
  • Author(s): 藤本 晶子, 阿部 修司, 吉川 顕正, 池田 昭大, 廣重 優, 中村 駿仁
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] Extraction of ionospheric echoes for time series Ionograms (2023)
  • Author(s): Hiroshige, Y., Fujimoto, A., Ikeda, A., Abe, S., Yoshikawa, A.
  • Organizer: Japan Geoscience Union Meeting 2023
  • Int'l Joint Research
• [Presentation] ペナルティ付き動体検出に基づいた時系列イオノグラム画像における電離圏エコー抽出モデルの開発 (2023)
  • Author(s): 廣重 優, 藤本 晶子, 阿部 修司, 池田 昭大, 吉川 顕正
  • Organizer: The 154 th SGEPSS General Assembly
• [Presentation] A penalized motion detection model for extracting ionospheric echoes from low signal-to-noise ratio Ionogram video images (2023)
  • Author(s): Hiroshige, Y., Fujimoto, A., Ikeda, A., Abe, S., Yoshikawa, A.
  • Organizer: 29th International Conference on Artificial Life and Robotics
  • Int'l Joint Research
• [Presentation] Extraction model of ionospheric echoes from ionogram video based images based on penalized motion detection (2023)
  • Author(s): Hiroshige, Y., Fujimoto, A., Ikeda, A., Abe, S., Yoshikawa, A.
  • Organizer: 2nd International Workshop on Metaverse
  • Int'l Joint Research
• [Presentation] Equinoctial asymmetry of plasma bubble occurrence and electric field at evening: GPS and ionosonde measurements in Southeast Asia (2023)
  • Author(s): Yuichi Otsuka, Prayitno Abadi, Kornyanat Hozumi, Alif Almahi
  • Organizer: 3rd International Workshop on Equatorial Plasma Bubbles (EPB窶?3)
  • Int'l Joint Research
• [Presentation] VHF Radar Observations of Field-Aligned Irregularities at Low and Middle Latitudes (2023)
  • Author(s): Yuichi Otsuka
  • Organizer: International Meridian Circle Program(IMCP) 2023 Space Weather School
  • Int'l Joint Research
• [Presentation] GNSS observations of traveling ionospheric disturbances in the ionosphere (2023)
  • Author(s): Yuichi Otsuka
  • Organizer: AAPPS-DPP2023
  • Int'l Joint Research / Invited
• [Presentation] Equinoctial asymmetry of GPS scintillation occurrence and drift velocities at post-sunset in Southeast Asia (2023)
  • Author(s): Yuichi Otsuka, Prayitno Abadi, Kornyanat Hozumi, Alif Almahi
  • Organizer: URSI GASS 2023
  • Int'l Joint Research
• [Presentation] Four-Minute Total Electron Content Fluctuations over Japan after the 2022 Hunga Tonga Hunga Ha'apai Volcanic Eruption (2023)
  • Author(s): Yuichi Otsuka, Fu Weizheng
  • Organizer: The 154 th SGEPSS General Assembly
  • Int'l Joint Research
• [Remarks] Optical Mesosphere Thermosphere Imagers
  • URL: https://stdb2.isee.nagoya-u.ac.jp/omti/
• [Remarks] ISEE Magnetometer network
  • URL: https://stdb2.isee.nagoya-u.ac.jp/magne/
• [Remarks] ISEE VLF/ELF database
  • URL: https://stdb2.isee.nagoya-u.ac.jp/vlf/
• [Remarks] EISCAT radar/Na lidar database
  • URL: https://www.isee.nagoya-u.ac.jp/~eiscat/data/EISCAT.html
• [Remarks] IUGONET Type-A
  • URL: http://search.iugonet.org/list.jsp