Japan Geoscience Union Meeting 2025

Yuichi Otsuka

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Convener, Chairperson

Sun. May 25, 2025 10:45 AM - 12:15 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University), Chairperson:Takeshi Sakanoi(Planetary Plasma and Atmospheric Research Center, Graduate School of Science, Tohoku University), Elvira Astafyeva(Institut de physique du Globe de Paris)

Sun. May 25, 2025 1:45 PM - 3:15 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University), Chairperson:Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Irina Zakharenkova(University Corporation for Atmospheric Research)

Sun. May 25, 2025 3:30 PM - 5:00 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University), Chairperson:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Weizheng Fu(Institute for Space-Earth Environmental Research, Nagoya University)

Sun. May 25, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [E] Poster
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University)

Mon. May 26, 2025 9:00 AM - 10:30 AM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University), Chairperson:Loren Chang(Department of Space Science and Engineering, National Central University), Charles Lin(Department of Earth Sciences, National Cheng Kung University)

Mon. May 26, 2025 10:45 AM - 12:15 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University), Chairperson:Akinori Saito(Department of Geophysics, Graduate School of Science, Kyoto University), Yuta Hozumi(The Catholic University of America)

Mon. May 26, 2025 1:45 PM - 3:15 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University), Chairperson:Bernd Kaifler(German Aerospace Center), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University)

Mon. May 26, 2025 3:30 PM - 5:00 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Keisuke Hosokawa(Department of Communication Engineering and Informatics, University of Electro-Communications), Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Loren Chang(Department of Space Science and Engineering, National Central University), Chairperson:Takanori Nishiyama(National Institute of Polar Research), Yang-Yi Sun(China University of Geosciences)

Mon. May 26, 2025 1:45 PM - 3:15 PM 104 (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-TT Technology & Techniques

[M-TT37] New Developments in Earth Science Explored by Dense GNSS Observation Networks

convener:Yusaku Ohta(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University), Mikiko Fujita(Japan Agency for Marine-Earth Science and Technology), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Takuya NISHIMURA(Disaster Prevention Research Institute, Kyoto University), Chairperson:Yusaku Ohta(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

Mon. May 26, 2025 3:30 PM - 5:00 PM 104 (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-TT Technology & Techniques

[M-TT37] New Developments in Earth Science Explored by Dense GNSS Observation Networks

convener:Yusaku Ohta(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University), Mikiko Fujita(Japan Agency for Marine-Earth Science and Technology), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Takuya NISHIMURA(Disaster Prevention Research Institute, Kyoto University), Chairperson:Mikiko Fujita(Japan Agency for Marine-Earth Science and Technology)

Mon. May 26, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Poster
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-TT Technology & Techniques

[M-TT37] New Developments in Earth Science Explored by Dense GNSS Observation Networks

convener:Yusaku Ohta(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University), Mikiko Fujita(Japan Agency for Marine-Earth Science and Technology), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Takuya NISHIMURA(Disaster Prevention Research Institute, Kyoto University)

Speaker, Author, Co-Author

Sun. May 25, 2025 10:45 AM - 12:15 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

Sun. May 25, 2025 1:45 PM - 3:15 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

2:45 PM - 3:00 PM

[PEM12-11] Temporal and spatial variation of electron density in the plasmasphere and ionosphere during the May 2024 super geomagnetic storm

*Atsuki Shinbori1, Naritoshi Kitamura1, Kazuhiro Yamamoto1, Atsushi Kumamoto2, Fuminori Tsuchiya2, Shoya Matsuda3, Yoshiya Kasahara3, Mariko Teramoto4, Ayako Matsuoka5, Takuya Sori5, Yuichi Otsuka1, Michi Nishioka6, Septi Perwitasari6, Yoshizumi Miyoshi1, Iku Shinohara7 (1.Institute for Space-Earth Environment Research (ISEE), Nagoya University, 2.Tohoku University, 3.Kanazawa University, 4.Kyushu Institute of Technology, 5.Kyoto University, 6.National Institute of Information and Communications Technology, 7.Institute of Space and Astronautical Science, JAXA)

Sun. May 25, 2025 3:30 PM - 5:00 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

4:00 PM - 4:15 PM

[PEM12-15] Investigation of Medium-Scale Traveling Ionospheric Disturbances using ISS-IMAP/VISI: Case Studies and Climatological Analysis

*Yuta Hozumi1,2, Akinori Saito3, Michi Nishioka4, Takeshi Sakanoi5, Jia Yue1,2, Min-Yang Chou1,2, Satoshi Andoh4, Atsushi Yamazaki6, Yuichi Otsuka7, Kazuo Shiokawa7 (1.The Catholic University of America, 2.NASA Goddard Space Flight Center/CCMC, 3.Graduate School of Science, Kyoto University, 4.National Institute of Information and Communications Technology, 5.Planetary Plasma and Atmospheric Research Center, Tohoku University, 6.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 7.Institute for Space-Earth Environmental Research, Nagoya University)

Sun. May 25, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [E] Poster
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

5:15 PM - 7:15 PM

[PEM12-P10] Statistical Relationship between Medium-Scale Traveling Ionospheric Disturbance and Sporadic E-layer: Geomagnetic Conjugate Observations by GPS Network and Ionosondes

*Kazui Watanabe1, Yuichi Otsuka1, Atsuki Shinbori1, Takuya Sori2, Michi Nishioka3, Septi Perwitasari3, Veera Kumar Maheswaran4 (1.Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan, 2.Research Institute for Sustainable Humanosphere, Kyoto University, 3.National Institute of Information and Communications Technology, Tokyo, Japan, 4.SASTRA Deemed University)

5:15 PM - 7:15 PM

[PEM12-P18] Possible generation mechanism of plasma bubbles during a geomagnetic storm in April 2023 based on satellite observations and simulations

*Takuya Sori1, Atsuki Shinbori2, Tomoaki Hori2, Yuichi Otsuka2, Chihiro Tao3, Hidekatsu Jin3, Tatsuhiro Yokoyama1, Michi Nishioka3, Septi Perwitasari3, Yasumasa Kasaba5, Atsushi Kumamoto4, Fuminori Tsuchiya5, Shoya Matsuda6, Yoshiya Kasahara6, Ayako Matsuoka7, Mariko Teramoto8, Kazuhiro Yamamoto2, Yoshizumi Miyoshi2, Iku Shinohara9, Mamoru Yamamoto1 (1.Research Institute for Sustainable Humanosphere, Kyoto University, 2.Institute for Space-Earth Environmental Research, Nagoya University, 3.National Institute of Information and Communications Technology, 4.Department of Geophysics, Tohoku University, 5.Planetary Plasma and Atmospheric Research Center, Tohoku University, 6.Graduate School of Natural Science and Technology, Kanazawa University, 7.World Data Center for Geomagnetism, Graduate School of Science, Kyoto University, 8.Graduate School of Engineering, Kyusyu Institute of Technology, 9.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)

Mon. May 26, 2025 9:00 AM - 10:30 AM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

Mon. May 26, 2025 1:45 PM - 3:15 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

Wed. May 28, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [E] Poster
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM13] Dynamics of the Inner Magnetospheric System

5:15 PM - 7:15 PM

[PEM13-P15] Multi-event analysis of penetration of plasmasheet electrons into the plasmasphere using the Arase satellite

*Masaki Gomi1, Kazuo Shiokawa1, Yoshizumi Miyoshi1, Yuichi Otsuka1, Shin-ichiro Oyama1, Atsuki Shinbori1, Tomoaki Hori1, Chae-Woo Jun1, Kazuhiro Yamamoto1, Iku Shinohara2, Kazushi Asamura2, Satoshi Kasahara3, Kunihiro Keika3, Shoichiro Yokota4, Fuminori Tsuchiya5, Atsushi Kumamoto5, Yoshiya Kasahara6, Yoichi Kazama7, Shiang-Yu Wang7, Tam Sunny W.Y8, Ayako Matsuoka9, Connors Martin10 (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.Japan Aerospace Exploration Agency, 3.Tokyo University, 4.Osaka University, 5.Tohoku University, 6.Kanazawa University, 7.Academia Sinica Institute of Astronomy and Astrophisics, 8.National Cheng Kung University, 9.Kyoto University, 10.Athabasca University)

Wed. May 28, 2025 10:45 AM - 12:15 PM 303 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM14] Study of coupling processes in solar-terrestrial system

11:45 AM - 12:00 PM

[PEM14-11] High-Latitude Ionospheric Electron Density Depletion in Response to Negative Solar Wind Pressure Pulses

*Geetashree KAKOTI1, Kazuo Shiokawa1, Mala S Bagiya2, Geeta Vichare2, Shreedevi P.R.1, Nozomu Nishitani1, Yuichi Otsuka1, Atsuki Shinbori1, Michi Nishioka3, Septi Perwitasari3 (1.Institute for Space-Earth Environmental Research, Nagoya University, , 2.Indian Institute of Geomagnetism, Navi Mumbai, India, 3.National Institute of Information and Communications Technology (NICT), Japan)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [E] Poster
  • | P (Space and Planetary Sciences )
  • | P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM15] Dynamics of Magnetosphere and Ionosphere

5:15 PM - 7:15 PM

[PEM15-P11] Altitudinal and Latitudinal Evolution of the Equatorial Ionization Anomaly During the May 10–11, 2024, Superstorm: Insights from DMSP and Swarm Observations

*Shreedevi Porunakatu Radhakrishna1, Achuthan S Nair2, Yoshizumi Miyoshi1, Stephan C Buchert3, Yuichi Otsuka1, Atsuki Shinbori1, Lalitha G Krishnan4, Septi Perwitasari5, Michi Nishioka5 (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.Space Physics and Astronomy Research Unit, University of Oulu, 3.Swedish Institute of Space Physics, Uppsala, Sweden, 4.Space Physics Laboratory, VSSC, ISRO, Trivandrum, India, 5.National Institute of Information and Communications Technology, Japan)

Mon. May 26, 2025 3:30 PM - 5:00 PM 104 (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-TT Technology & Techniques

[M-TT37] New Developments in Earth Science Explored by Dense GNSS Observation Networks

4:15 PM - 4:30 PM

[MTT37-10] High-Resolution 3-D GNSS Tomography of Medium-Scale Traveling Ionospheric Disturbances Driven by Atmospheric Gravity Waves Over Japan

*Weizheng Fu1, Yuichi Otsuka1, Klemens Hocke2, Guanyi Ma3, Michi Nishioka4, Hidekatsu Jin4 (1.Institute for Space-Earth Environmental Research, Nagoya University , 2.Institute of Applied Physics, University of Bern, Bern, Switzerland , 3.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China, 4.National Institute of Information and Communications Technology, Tokyo, Japan)

Mon. May 26, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Poster
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-TT Technology & Techniques

[M-TT37] New Developments in Earth Science Explored by Dense GNSS Observation Networks

5:15 PM - 7:15 PM

[MTT37-P10] Temporal Variation in 1-second TEC Data Derived from Ultra-Dense GNSS Observation Network

*Hiroyuki Nakata1, Rikuto Enomoto2, Yohei Kawamura3, Yuichi Otsuka4, Susumu Saito5 (1.Graduate School of Engineering, Chiba University, 2.Graduate School of Science and Engineering, Chiba University, 3.Faculty of Engineering, Chiba University, 4.Institute for Space–Earth Environmental Research, Nagoya University, 5.National Institute of Maritime, Port and Aviation Technology)

Sun. May 25, 2025 3:30 PM - 5:00 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-ZZ Others

[M-ZZ43] Transdisciplinary Network linking Space-Earth Environmental Science with History and Archaeology